[Fwd: For help]

[Andrew Makhorin]

 Forwarded Message 

Date: Fri, 12 Aug 2022 11:18:40 +0800
Subject: For help
To: help-glpk@gnu.org 
From: travelor <1085886...@qq.com>
> Hello, I'm having some trouble, could you tell me some parameter
> for GLPK to optimizing many Linear problem?
> I understarded many usage, such as ‘mipgap’and’ tmlim’. I want to know
> If there are any other parameters to optimizing problem?
> Regardless of the outcome, thank you very much. Looking forward to you
> reply.
>  

Re: [Fwd: installation help]

[Heinrich Schuchardt]

On 7/15/20 11:06 PM, Andrew Makhorin wrote:
>  Forwarded Message 
> From: "Pandey, Sanjit" 
> To: help-glpk@gnu.org 
> Subject: installation help
> Date: Wed, 15 Jul 2020 20:45:19 +
>
>> Hi,
>>  
>> I keep getting following error when I try to install glpk for java.
>> Any idea what is going on ?
>>  
>> src/c/glpk_wrap.c:14977: error: ‘arg1’ undeclared (first use in this
>> function)
>> src/c/glpk_wrap.c:14977: error: expected expression before ‘)’ token
>> src/c/glpk_wrap.c:14983: error: expected expression before ‘)’ token
>> src/c/glpk_wrap.c: In function
>> ‘Java_org_gnu_glpk_GLPKJNI_LPXKKT_1cs_1quality_1set’:
>> src/c/glpk_wrap.c:14991: error: ‘LPXKKT’ undeclared (first use in
>> this function)
>> src/c/glpk_wrap.c:14991: error: ‘arg1’ undeclared (first use in this
>> function)
>> src/c/glpk_wrap.c:14991: error: expected expression before ‘)’ token
>> src/c/glpk_wrap.c:14997: error: expected expression before ‘)’ token
>> src/c/glpk_wrap.c: In function
>> ‘Java_org_gnu_glpk_GLPKJNI_LPXKKT_1cs_1quality_1get’:
>> src/c/glpk_wrap.c:15005: error: ‘LPXKKT’ undeclared (first use in
>> this function)
>> src/c/glpk_wrap.c:15005: error: ‘arg1’ undeclared (first use in this
>> function)
>> src/c/glpk_wrap.c:15005: error: expected expression before ‘)’ token
>> src/c/glpk_wrap.c:15011: error: expected expression before ‘)’ token
>> src/c/glpk_wrap.c: In function
>> ‘Java_org_gnu_glpk_GLPKJNI_new_1LPXKKT’:
>> src/c/glpk_wrap.c:15020: error: ‘LPXKKT’ undeclared (first use in
>> this function)
>> src/c/glpk_wrap.c:15020: error: ‘result’ undeclared (first use in
>> this function)
>> src/c/glpk_wrap.c:15035: error: expected expression before ‘)’ token
>> src/c/glpk_wrap.c:15043: error: expected expression before ‘)’ token
>> src/c/glpk_wrap.c: In function
>> ‘Java_org_gnu_glpk_GLPKJNI_delete_1LPXKKT’:
>> src/c/glpk_wrap.c:15049: error: ‘LPXKKT’ undeclared (first use in
>> this function)
>> src/c/glpk_wrap.c:15049: error: ‘arg1’ undeclared (first use in this
>> function)
>> src/c/glpk_wrap.c:15049: error: expected expression before ‘)’ token
>> src/c/glpk_wrap.c:15053: error: expected expression before ‘)’ token
>> src/c/glpk_wrap.c: In function
>> ‘Java_org_gnu_glpk_GLPKJNI__1glp_1lpx_1create_1prob’:
>> src/c/glpk_wrap.c:15093: warning: cast to pointer from integer of
>> different size
>> src/c/glpk_wrap.c: In function
>> ‘Java_org_gnu_glpk_GLPKJNI__1glp_1lpx_1get_1prob_1name’:
>> src/c/glpk_wrap.c:15697: warning: cast to pointer from integer of
>> different size
>> src/c/glpk_wrap.c: In function
>> ‘Java_org_gnu_glpk_GLPKJNI__1glp_1lpx_1get_1obj_1name’:
>> src/c/glpk_wrap.c:15730: warning: cast to pointer from integer of
>> different size
>> src/c/glpk_wrap.c: In function
>> ‘Java_org_gnu_glpk_GLPKJNI__1glp_1lpx_1get_1row_1name’:
>> src/c/glpk_wrap.c:15864: warning: cast to pointer from integer of
>> different size
>> src/c/glpk_wrap.c: In function
>> ‘Java_org_gnu_glpk_GLPKJNI__1glp_1lpx_1get_1col_1name’:


Dear Sanjit,

symbol lpx_get_col_name() exists in GLPK 4.40 but not in GLPK 4.65.

So it seems that besides GLPK 4.65 an old version of GLPK is installed.
 And you tried to wrap the glpk.h from that old version.

Maybe you installed a GLPK version that came with your operating system
distribution.

Please, uninstall all old versions of GLPK and retry.

If you need further assistance, please, provide

* operating system
* installation paths
* full log including your input

Best regards

Heinrich

>> src/c/glpk_wrap.c:15899: warning: cast to pointer from integer of
>> different size
>> src/c/glpk_wrap.c: In function
>> ‘Java_org_gnu_glpk_GLPKJNI__1glp_1lpx_1check_1kkt’:
>> src/c/glpk_wrap.c:17213: error: ‘LPXKKT’ undeclared (first use in
>> this function)
>> src/c/glpk_wrap.c:17213: error: ‘arg3’ undeclared (first use in this
>> function)
>> src/c/glpk_wrap.c:17213: error: expected expression before ‘)’ token
>> src/c/glpk_wrap.c:17221: error: expected expression before ‘)’ token
>> src/c/glpk_wrap.c: In function
>> ‘Java_org_gnu_glpk_GLPKJNI__1glp_1lpx_1check_1int’:
>> src/c/glpk_wrap.c:18172: error: ‘LPXKKT’ undeclared (first use in
>> this function)
>> src/c/glpk_wrap.c:18172: error: ‘arg2’ undeclared (first use in this
>> function)
>> src/c/glpk_wrap.c:18172: error: expected expression before ‘)’ token
>> src/c/glpk_wrap.c:18179: error: expected expression before ‘)’ token
>> src/c/glpk_wrap.c: In function
>> ‘Java_org_gnu_glpk_GLPKJNI__1glp_1lpx_1read_1mps’:
>> src/c/glpk_wrap.c:18390: warning: cast to pointer from integer of
>> different size
>> src/c/glpk_wrap.c: In function
>> ‘Java_org_gnu_glpk_GLPKJNI__1glp_1lpx_1read_1freemps’:
>> src/c/glpk_wrap.c:18547: warning: cast to pointer from integer of
>> different size
>> src/c/glpk_wrap.c: In function
>> ‘Java_org_gnu_glpk_GLPKJNI__1glp_1lpx_1read_1cpxlp’:
>> src/c/glpk_wrap.c:18624: warning: cast to pointer from integer of
>> different size
>> src/c/glpk_wrap.c: In function
>> ‘Java_org_gnu_glpk_GLPKJNI__1glp_1lpx_1read_1model’:
>> 

[Fwd: installation help]

[Andrew Makhorin]

 Forwarded Message 
From: "Pandey, Sanjit" 
To: help-glpk@gnu.org 
Subject: installation help
Date: Wed, 15 Jul 2020 20:45:19 +

> Hi,
>  
> I keep getting following error when I try to install glpk for java.
> Any idea what is going on ?
>  
> src/c/glpk_wrap.c:14977: error: ‘arg1’ undeclared (first use in this
> function)
> src/c/glpk_wrap.c:14977: error: expected expression before ‘)’ token
> src/c/glpk_wrap.c:14983: error: expected expression before ‘)’ token
> src/c/glpk_wrap.c: In function
> ‘Java_org_gnu_glpk_GLPKJNI_LPXKKT_1cs_1quality_1set’:
> src/c/glpk_wrap.c:14991: error: ‘LPXKKT’ undeclared (first use in
> this function)
> src/c/glpk_wrap.c:14991: error: ‘arg1’ undeclared (first use in this
> function)
> src/c/glpk_wrap.c:14991: error: expected expression before ‘)’ token
> src/c/glpk_wrap.c:14997: error: expected expression before ‘)’ token
> src/c/glpk_wrap.c: In function
> ‘Java_org_gnu_glpk_GLPKJNI_LPXKKT_1cs_1quality_1get’:
> src/c/glpk_wrap.c:15005: error: ‘LPXKKT’ undeclared (first use in
> this function)
> src/c/glpk_wrap.c:15005: error: ‘arg1’ undeclared (first use in this
> function)
> src/c/glpk_wrap.c:15005: error: expected expression before ‘)’ token
> src/c/glpk_wrap.c:15011: error: expected expression before ‘)’ token
> src/c/glpk_wrap.c: In function
> ‘Java_org_gnu_glpk_GLPKJNI_new_1LPXKKT’:
> src/c/glpk_wrap.c:15020: error: ‘LPXKKT’ undeclared (first use in
> this function)
> src/c/glpk_wrap.c:15020: error: ‘result’ undeclared (first use in
> this function)
> src/c/glpk_wrap.c:15035: error: expected expression before ‘)’ token
> src/c/glpk_wrap.c:15043: error: expected expression before ‘)’ token
> src/c/glpk_wrap.c: In function
> ‘Java_org_gnu_glpk_GLPKJNI_delete_1LPXKKT’:
> src/c/glpk_wrap.c:15049: error: ‘LPXKKT’ undeclared (first use in
> this function)
> src/c/glpk_wrap.c:15049: error: ‘arg1’ undeclared (first use in this
> function)
> src/c/glpk_wrap.c:15049: error: expected expression before ‘)’ token
> src/c/glpk_wrap.c:15053: error: expected expression before ‘)’ token
> src/c/glpk_wrap.c: In function
> ‘Java_org_gnu_glpk_GLPKJNI__1glp_1lpx_1create_1prob’:
> src/c/glpk_wrap.c:15093: warning: cast to pointer from integer of
> different size
> src/c/glpk_wrap.c: In function
> ‘Java_org_gnu_glpk_GLPKJNI__1glp_1lpx_1get_1prob_1name’:
> src/c/glpk_wrap.c:15697: warning: cast to pointer from integer of
> different size
> src/c/glpk_wrap.c: In function
> ‘Java_org_gnu_glpk_GLPKJNI__1glp_1lpx_1get_1obj_1name’:
> src/c/glpk_wrap.c:15730: warning: cast to pointer from integer of
> different size
> src/c/glpk_wrap.c: In function
> ‘Java_org_gnu_glpk_GLPKJNI__1glp_1lpx_1get_1row_1name’:
> src/c/glpk_wrap.c:15864: warning: cast to pointer from integer of
> different size
> src/c/glpk_wrap.c: In function
> ‘Java_org_gnu_glpk_GLPKJNI__1glp_1lpx_1get_1col_1name’:
> src/c/glpk_wrap.c:15899: warning: cast to pointer from integer of
> different size
> src/c/glpk_wrap.c: In function
> ‘Java_org_gnu_glpk_GLPKJNI__1glp_1lpx_1check_1kkt’:
> src/c/glpk_wrap.c:17213: error: ‘LPXKKT’ undeclared (first use in
> this function)
> src/c/glpk_wrap.c:17213: error: ‘arg3’ undeclared (first use in this
> function)
> src/c/glpk_wrap.c:17213: error: expected expression before ‘)’ token
> src/c/glpk_wrap.c:17221: error: expected expression before ‘)’ token
> src/c/glpk_wrap.c: In function
> ‘Java_org_gnu_glpk_GLPKJNI__1glp_1lpx_1check_1int’:
> src/c/glpk_wrap.c:18172: error: ‘LPXKKT’ undeclared (first use in
> this function)
> src/c/glpk_wrap.c:18172: error: ‘arg2’ undeclared (first use in this
> function)
> src/c/glpk_wrap.c:18172: error: expected expression before ‘)’ token
> src/c/glpk_wrap.c:18179: error: expected expression before ‘)’ token
> src/c/glpk_wrap.c: In function
> ‘Java_org_gnu_glpk_GLPKJNI__1glp_1lpx_1read_1mps’:
> src/c/glpk_wrap.c:18390: warning: cast to pointer from integer of
> different size
> src/c/glpk_wrap.c: In function
> ‘Java_org_gnu_glpk_GLPKJNI__1glp_1lpx_1read_1freemps’:
> src/c/glpk_wrap.c:18547: warning: cast to pointer from integer of
> different size
> src/c/glpk_wrap.c: In function
> ‘Java_org_gnu_glpk_GLPKJNI__1glp_1lpx_1read_1cpxlp’:
> src/c/glpk_wrap.c:18624: warning: cast to pointer from integer of
> different size
> src/c/glpk_wrap.c: In function
> ‘Java_org_gnu_glpk_GLPKJNI__1glp_1lpx_1read_1model’:
> src/c/glpk_wrap.c:18713: warning: cast to pointer from integer of
> different size
> make[2]: *** [all] Error 1
> make[2]: Leaving directory `/storage2/APPS/MOST/libglpk-java-
> 1.12.0/swig'
> make[1]: *** [all-recursive] Error 1
> make[1]: Leaving directory `/storage2/APPS/MOST/libglpk-java-1.12.0'
> make: *** [all] Error 2
>  
>  
>  
> I have following dependencies installed:
> > glpsol --version
> GLPSOL: GLPK LP/MIP Solver, v4.65
> Copyright (C) 2000-2017 Andrew Makhorin, Department for Applied
> Informatics, Moscow Aviation Institute, Moscow, Russia. All rights
> reserved. E-mail: .
>  
> This program has ABSOLUTELY NO WARRANTY.
>  
> This 

Re: [Fwd: Need help in Fixing GUSEK Code]

[Michael Hennebry]

On Fri, 10 Apr 2020, Andrew Makhorin wrote:


 Forwarded Message 
From: sahani rathnasiri 
To: help-glpk@gnu.org
Subject: Need help in Fixing GUSEK Code
Date: Fri, 10 Apr 2020 19:08:39 +1000


...

I am running code in GUSEK and I need to define three indexes. I am
getting a syntax error. Please help me fix this.
My constraint;
subject to order_quantity_constraint_min {i in I, j in J, n in N: i
<= t, j <> 2 and n <= r}: Z[i,j]* Qmin[i,n] <= a[i,n];

The result I receive in NEOS;

amplin, line 50 (offset 2865):
        syntax error
context:  subject to order_quantity_constraint_min {i in I, j in J, n
in N: i <=  >>> t, <<<  j <> 2 and n <= r}: Z[i,j]* Qmin[i,n] <=
a[i,n];


Presumably the offending t is supposed to be j or n.

--
Michael   henne...@web.cs.ndsu.nodak.edu
"Sorry but your password must contain an uppercase letter, a number,
a haiku, a gang sign, a heiroglyph, and the blood of a virgin."
 --  someeecards

Re: [Fwd: Need help in Fixing GUSEK Code]

[Heinrich Schuchardt]

On 4/10/20 11:57 AM, Andrew Makhorin wrote:
>  Forwarded Message 
> From: sahani rathnasiri 
> To: help-glpk@gnu.org
> Subject: Need help in Fixing GUSEK Code
> Date: Fri, 10 Apr 2020 19:08:39 +1000
>
>> Hi All,
>>
>> I am running code in GUSEK and I need to define three indexes. I am
>> getting a syntax error. Please help me fix this.
>> My constraint;
>> subject to order_quantity_constraint_min {i in I, j in J, n in N: i
>> <= t, j <> 2 and n <= r}: Z[i,j]* Qmin[i,n] <= a[i,n];
>>
>> The result I receive in NEOS;
>>
>> amplin, line 50 (offset 2865):
>>         syntax error
>> context:  subject to order_quantity_constraint_min {i in I, j in J, n
>> in N: i <=  >>> t, <<<  j <> 2 and n <= r}: Z[i,j]* Qmin[i,n] <=
>> a[i,n];

Dear Sahani,

the output points you to where the problem is: "t,".

Probably you mean

i <= t and j <> 2 and n <= r

Best regards

Heinrich

>> Executing AMPL.
>>
>> If anyone can help me, really appreciate your help in this regard.
>>
>> Thank You,
>>
>> Best Regards,
>>
>> Sahani 

[Fwd: Need help in Fixing GUSEK Code]

[Andrew Makhorin]

 Forwarded Message 
From: sahani rathnasiri 
To: help-glpk@gnu.org
Subject: Need help in Fixing GUSEK Code
Date: Fri, 10 Apr 2020 19:08:39 +1000

> Hi All,
> 
> I am running code in GUSEK and I need to define three indexes. I am
> getting a syntax error. Please help me fix this.
> My constraint;
> subject to order_quantity_constraint_min {i in I, j in J, n in N: i
> <= t, j <> 2 and n <= r}: Z[i,j]* Qmin[i,n] <= a[i,n];
> 
> The result I receive in NEOS;
> 
> amplin, line 50 (offset 2865):
>         syntax error
> context:  subject to order_quantity_constraint_min {i in I, j in J, n
> in N: i <=  >>> t, <<<  j <> 2 and n <= r}: Z[i,j]* Qmin[i,n] <=
> a[i,n];
> Executing AMPL.
> 
> If anyone can help me, really appreciate your help in this regard.
> 
> Thank You,
> 
> Best Regards,
> 
> Sahani 
> 
> 

Re: [Help-glpk] [Fwd: Download help]

[Heinrich Schuchardt]

Hello Christian,

see
https://en.m.wikibooks.org/wiki/GLPK

Best regards

Heinrich Schuchardt

http://www.xypron.de

Am 15.02.17 um 17:49 schrieb Andrew Makhorin

>  Forwarded Message 
> From: Christian Samatis 
> To: help-glpk@gnu.org
> Subject: Download help
> Date: Wed, 15 Feb 2017 09:00:38 -0500
> 
> Hello,
> 
> 
> I am completely new to programming and I am trying to download GLPK to
> my computer via the link  http://ftp.gnu.org/gnu/glpk/ However, I am not
> sure how to accomplish this. When I click on the link it opens an Index
> with a ton of files. Which file(s) am I supposed to open/and or save to
> my computer?  How do I gain access to GLPK?
> 
> 
> Thanks for all the help,
> Christian Samatis
> 
> 
> 
> ___
> Help-glpk mailing list
> Help-glpk@gnu.org
> https://lists.gnu.org/mailman/listinfo/help-glpk

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Re: [Help-glpk] [Fwd: Please help me]

[Heinrich Schuchardt]

Dear Reza,

the source of GLPK comes with documentation for the GMPL language in
file doc/gmpl.doc. Please, read it carefully. There is also an examples
directory.

The source is available at
http://ftp.gnu.org/gnu/glpk/glpk-4.60.tar.gz

Best regards

Heinrich Schuchardt


On 07/23/2016 04:04 PM, Andrew Makhorin wrote:
>  Forwarded Message 
> To: help-glpk@gnu.org 
> Subject: Please help me
> Date: Sat, 23 Jul 2016 13:44:59 + (UTC)
> 
> Dear GLPK builders,
> when I try to run my code which have the following line, I receive
> error:
> 
> 
> for{(m,i)in arcs, b in source,t in sink,(i,j) in arcs, k in source,l in
> sink: i in nodes diff source and j in nodes diff sink  }: if
> Flow[i,j,k,l]=1 then Flow[m,i,b,t]=1 else Flow[m,i,b,t]=0;
> 
> 
> Please help me to correct it.
> Thanks a lot


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[Help-glpk] [Fwd: Need help in reading .csv file]

[Andrew Makhorin]

 Forwarded Message 
From: Kaveti Naveenkumar 
To: help-glpk@gnu.org
Subject: Need help in reading .csv file
Date: Tue, 12 Apr 2016 15:33:49 +0530

Hi,


I am using Gusek in Mac (via WINE). While I am trying to read .csv files
its throwing an error "invalid field name"  but when I am running
transp_csv.mod file its reading .csv files from provided examples.


I am not sure why this is happening. I would be grateful if someone help
me to sort it out.


Thank you.


-- 
Regards,
Naveen



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[Help-glpk] [Fwd: need help about gusek]

[Andrew Makhorin]

 Forwarded Message 
From: 郑志鹏 304758...@qq.com
To: Makhorin m...@gnu.org
Subject: need help about gusek
Date: Thu, 3 Apr 2014 17:38:17 +0800



Hello,Andrew:

  My name is Zheng Zhipeng,I am a student from China,these days I am
using the GUSEk program.

  There are some problems I don't know to handle.First,when I use the
CSV file to store the data,I defined the sets and parameters,but when I
run GUSEK,it told me that :duplicate tuple (4023,20,4136,4022,9715)
detected.in fact ,there is only one (4023,20,4136,4022,9715) in the CSV
file ,so I have to delete it ,it can run successfully,but sometimes I
need this data .

Second ,if  I want to solve the least-absolute-deviation problem using
gusek,how should I convert the objective function.My objective function
is following:

 sum{a in A,c in C}|(sum{i in I,j in J}
pl[i,j,a,c]*d[i,j]-col[a,c])|

  +sum{a in A,b in B,c in C}|(sum{i in I,j in J}
pls[i,j,a,b,c]*d[i,j]-cot[a,b,c])|

 +sum{i in I,j in J}|(d[i,j]-dt[i,j])|.

 

There is an attachment which is my GUSEK code ,if you can help me check
the error I mentioned previous,it will be a great help for me.Thank you
very much!

 

Your Sincerely




static_odme_coded_by_GLPK.rar
Description: Binary data
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Re: [Help-glpk] [Fwd: need help about gusek]

[Heinrich Schuchardt]

Dear Zheng,

your mail had to be forwarded manually be cause you are not registered for the 
GLPK help list. See
https://lists.gnu.org/mailman/listinfo/help-glpk

With statement

table tab_movementproportion IN CSV movement_proportion_back.csv:
Q-[origin_zone,destination_zone,from_node,intermeadi_node,to_node],pls~movement_proportion;

the following records are read:

4023,20,4136,4022,9715,0
4023,20,4136,4022,9715,1

Both contain identical field values
(4023,20,4136,4022,9715)
for set Q and hence would create duplicates in Q.

Best regards

Heinrich Schuchardt

http://www.xypron.de

Heinrich Schuchardt

http://www.xypron.de


  Forwarded Message 
 Subject: need help about gusek
 Date: Thu, 3 Apr 2014 17:38:17 +0800
 
 
 
 Hello,Andrew:
 
   My name is Zheng Zhipeng,I am a student from China,these days I am
 using the GUSEk program.
 
   There are some problems I don't know to handle.First,when I use the
 CSV file to store the data,I defined the sets and parameters,but when I
 run GUSEK,it told me that :duplicate tuple (4023,20,4136,4022,9715)
 detected.in fact ,there is only one (4023,20,4136,4022,9715) in the CSV
 file ,so I have to delete it ,it can run successfully,but sometimes I
 need this data .
 
 Second ,if  I want to solve the least-absolute-deviation problem using
 gusek,how should I convert the objective function.My objective function
 is following:
 
  sum{a in A,c in C}|(sum{i in I,j in J}
 pl[i,j,a,c]*d[i,j]-col[a,c])|
 
   +sum{a in A,b in B,c in C}|(sum{i in I,j in J}
 pls[i,j,a,b,c]*d[i,j]-cot[a,b,c])|
 
  +sum{i in I,j in J}|(d[i,j]-dt[i,j])|.
 
  
 
 There is an attachment which is my GUSEK code ,if you can help me check
 the error I mentioned previous,it will be a great help for me.Thank you
 very much!
 
  
 
 Your Sincerely
 
 
 ___
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 Help-glpk@gnu.org
 https://lists.gnu.org/mailman/listinfo/help-glpk
 

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Re: [Help-glpk] [Fwd: need help about gusek]

[Andrew Makhorin]

 Second ,if  I want to solve the least-absolute-deviation problem using
 gusek,how should I convert the objective function.My objective function
 is following:
 
  sum{a in A,c in C}|(sum{i in I,j in J}
 pl[i,j,a,c]*d[i,j]-col[a,c])|
 
   +sum{a in A,b in B,c in C}|(sum{i in I,j in J}
 pls[i,j,a,b,c]*d[i,j]-cot[a,b,c])|
 
  +sum{i in I,j in J}|(d[i,j]-dt[i,j])|.
 

You may look at some examples included in the glpk distribution, namely,
cf12a.mod, cf12b.mod, cflsq.mod, qfit.mod, xyacfs.mod, and yacfs.mod.



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[Help-glpk] [Fwd: Newbie help request]

[Andrew Makhorin]

 Forwarded Message 
From: Tóth Tamás tomika_nos...@freemail.hu
To: help-glpk@gnu.org
Subject: Newbie help request
Date: Tue, 19 Nov 2013 18:07:17 +0100

Hi all,

I'm totally new in linear programming and I have to solve a 
task-to-employee assignment problem.
Almost everything is fine but I cannot make linear the travelling 
section of problem (I mean it should be summarized how much an employee 
should travel with summarizing the distance between tasks following each 
other).

In the objective expression you can see as I try to filter by calculated 
assignment for both tasks (searching for pairs that follows each other) 
but I got multiplications of linear forms not allowed.

Please someone tell me if it can be linearized at all and if it's 
possible how.

Thanks in advance.

Best regards,
 Tóth Tamás

PS.: Sorry for my poor english.

My program is:

set TASKS := { 44911405.1396, 45917349.728, 45935255.760, 
45940559.937, 45940616.810, 45850077.1834, 45867819.665, 
45875315.776, 45890352.675, 45893970.1566, 45867241.631, 
45903630.1515, 45934020.614, 45889432.867, 45891512.1801, 
45918734.827, 45921337.721, 45939669.674 };
set EMPLOYEES := { 105170, 105171, 105172, 105173, 109912, 
109915, 97819 };
set HOURS := 1..24;

param max_travel_cost := 9.9;
param scheduling{TASKS, HOURS}, binary;
param distances{TASKS, TASKS}, = 0;
param competence{EMPLOYEES, TASKS}, binary;
param cost{EMPLOYEES, TASKS};
param private_limits{EMPLOYEES}, = 0, = 24;

var assignments{EMPLOYEES, TASKS}, binary;

minimize total: card(TASKS) - sum{e in EMPLOYEES, t in TASKS} 
assignments[e,t] * 100
 + sum{t in TASKS, e in EMPLOYEES} assignments[e,t] * 
cost[e,t]
 + sum{e in EMPLOYEES, h in HOURS, t in TASKS: 
scheduling[t,h] = 1}
 (assignments[e,t] * if h  1 then (
 sum{t2 in TASKS: scheduling[t2,h-1] = 1} 
assignments[e,t2] * distances[t,t2]
 ) else max_travel_cost);

competent{e in EMPLOYEES, t in TASKS}: assignments[e,t] = competence[e,t];
overlap{e in EMPLOYEES, h in HOURS}: sum{t in TASKS} assignments[e,t] * 
scheduling[t,h] = 1;
unique{t in TASKS}: sum{e in EMPLOYEES} assignments[e,t] = 1;
private_limit{e in EMPLOYEES}: sum{h in HOURS, t in TASKS} 
assignments[e,t] * scheduling[t,h] = private_limits[e];

solve;
for {e in EMPLOYEES, t in TASKS: assignments[e,t] != 0} printf 
ASSIGNMENTS %s %s\n, t, e;

data;
param scheduling:  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 
22 23 24 :=
   44911405.1396 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   45917349.728 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   45935255.760 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   45940559.937 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   45940616.810 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   45850077.1834 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0
   45867819.665 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0
   45875315.776 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0
   45890352.675 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0
   45893970.1566 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0
   45867241.631 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0
   45903630.1515 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0
   45934020.614 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0
   45889432.867 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0
   45891512.1801 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0
   45918734.827 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0
   45921337.721 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0
   45939669.674 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0;
param distances:  44911405.1396 45917349.728 45935255.760 
45940559.937 45940616.810 45850077.1834 45867819.665 
45875315.776 45890352.675 45893970.1566 45867241.631 
45903630.1515 45934020.614 45889432.867 45891512.1801 
45918734.827 45921337.721 45939669.674 :=
   44911405.1396 0 9.9 9.9 9.9 9.9 9.9 9.9 9.9 9.9 9.9 0.5687 9.9 9.9 
9.9 9.9 9.9 9.9 0.1045
   45917349.728 9.9 0 9.9 9.9 9.9 0.1076 0.5568 0.4025 9.9 9.9 9.9 
0.0948 0.0417 9.9 9.9 1.8267 2.8377 9.9
   45935255.760 9.9 9.9 0 9.9 9.9 9.9 9.9 9.9 9.9 9.9 9.9 9.9 9.9 9.9 
9.9 9.9 9.9 9.9
   45940559.937 9.9 9.9 9.9 0 0.1142 9.9 9.9 9.9 9.9 9.9 9.9 9.9 9.9 
9.9 9.9 9.9 9.9 9.9
   45940616.810 9.9 9.9 9.9 0.1142 0 9.9 9.9 9.9 9.9 9.9 9.9 9.9 9.9 
9.9 9.9 9.9 9.9 9.9
   45850077.1834 9.9 0.1076 9.9 9.9 9.9 0 0.4898 0.4699 9.9 9.9 9.9 
0.1428 0.0749 9.9 9.9 1.7899 2.7741 9.9
   45867819.665 9.9 0.5568 9.9 9.9 9.9 0.4898 0 0.6026 9.9 9.9 9.9 
0.6289 0.5168 9.9 9.9 1.3237 2.2845 9.9
   45875315.776 9.9 0.4025 9.9 9.9 9.9 0.4699 0.6026 0 9.9 9.9 9.9 
0.4852 0.4063 9.9 9.9 1.627 2.7272 9.9
   45890352.675 9.9 9.9 9.9 9.9 9.9 9.9 9.9 9.9 0 9.9 9.9 9.9 9.9 9.9 
9.9 9.9 9.9 9.9
   45893970.1566 9.9 9.9 9.9 9.9 9.9 9.9 9.9 9.9 9.9 0 9.9 9.9 9.9 9.9 
9.9 9.9 9.9 9.9
   45867241.631 0.5687 9.9 9.9 9.9 9.9 9.9 9.9 9.9 9.9 9.9 0 9.9 9.9 
9.9 9.9 

Re: [Help-glpk] [Fwd: Need help running GLPK code in Ubuntu server]

[xypron . glpk]

Hello Kazi,

glpk-4.50/src/glpk.h has no constyant LPX_LP. You obviously use a GLPK for Java 
built against an older include file.

Check directory /usr/include.

Best regards

Heinrich Schuchardt

http://www.xypron.de

Am 09.06.13 um 21:54 schrieb Kazi Moyeen ul Huq

 Hi,
 
 What is this Timer-0 error ?
 
 Thanks
 
 Kazi.
 
 
 
 ~/application/state-optimizer$ java -Djava.library.path=/usr/local/lib/jni/
 
 -classpath /usr/local/share/java/glpk-java.jar -jar st.jar
 
 
 
 Problem created ...test_MPC3
 
 
 
 *Exception in thread Timer-0 java.lang.UnsatisfiedLinkError:
 
 org.gnu.glpk.GLPKJNI.LPX_LP_get()I*
 
 at org.gnu.glpk.GLPKJNI.LPX_LP_get(Native Method)
 
  at org.gnu.glpk.GLPKConstants.clinit(GLPKConstants.java:122)
 
 at
 
 org.totalgrid.reef.examples.stateoptimizer.DESDAlgorithm.optimize(DESDAlgorithm.java:145)
 
  at
 
 org.totalgrid.reef.examples.stateoptimizer.StateOptimizerManager$1.run(StateOptimizerManager.java:65)
 
 at java.util.TimerThread.mainLoop(Timer.java:534)
 
  at java.util.TimerThread.run(Timer.java:484)
 
 
 
 
 
 
 
 -Kazi
 
 
 
 
 
 On Sun, Jun 9, 2013 at 9:46 AM, Heinrich Schuchardt xypron.g...@gmx.dewrote:
 
 
 
  On 09.06.2013 15:33, Kazi Moyeen ul Huq wrote:
 
 
 
  java -Djava.library.path=/usr/lib/**jni -jar st.jar
 
 
 
 
 
  Hello Kazi,
 
 
 
  the default installation path for GLPK and GLPK for Java is
 
  /usr/local
 
 
 
  If you did not configure with --prefix the command line to execute you jar
 
  file should be
 
 
 
  java -Djava.library.path=/usr/**local/lib/jni \
 
-classpath /usr/local/share/java/glpk-**java.jar -jar st.jar
 
 
 
  Best regards
 
 
 
  Heinrich Schuchardt
 
 

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Re: [Help-glpk] [Fwd: Need help running GLPK code in Ubuntu server]

[Kazi Moyeen ul Huq]

Hi,
Should usr/include contain a copy of glpk.h ? I don't have one. Should I
copy the glpk.h to usr/include or should I install another time ?

I installed glpk4.50 in the home directory. But, glpsol --version shows
 GLPSOL: GLPK LP/MIP Solver, v4.50
-Kazi



On Mon, Jun 10, 2013 at 3:26 AM, xypron.g...@gmx.de wrote:

 Hello Kazi,

 glpk-4.50/src/glpk.h has no constyant LPX_LP. You obviously use a GLPK for
 Java built against an older include file.

 Check directory /usr/include.

 Best regards

 Heinrich Schuchardt

 http://www.xypron.de

 Am 09.06.13 um 21:54 schrieb Kazi Moyeen ul Huq

  Hi,
 
  What is this Timer-0 error ?
 
  Thanks
 
  Kazi.
 
 
 
  ~/application/state-optimizer$ java
 -Djava.library.path=/usr/local/lib/jni/
 
  -classpath /usr/local/share/java/glpk-java.jar -jar st.jar
 
 
 
  Problem created ...test_MPC3
 
 
 
  *Exception in thread Timer-0 java.lang.UnsatisfiedLinkError:
 
  org.gnu.glpk.GLPKJNI.LPX_LP_get()I*
 
  at org.gnu.glpk.GLPKJNI.LPX_LP_get(Native Method)
 
   at org.gnu.glpk.GLPKConstants.clinit(GLPKConstants.java:122)
 
  at
 
 
 org.totalgrid.reef.examples.stateoptimizer.DESDAlgorithm.optimize(DESDAlgorithm.java:145)
 
   at
 
 
 org.totalgrid.reef.examples.stateoptimizer.StateOptimizerManager$1.run(StateOptimizerManager.java:65)
 
  at java.util.TimerThread.mainLoop(Timer.java:534)
 
   at java.util.TimerThread.run(Timer.java:484)
 
 
 
 
 
 
 
  -Kazi
 
 
 
 
 
  On Sun, Jun 9, 2013 at 9:46 AM, Heinrich Schuchardt xypron.g...@gmx.de
 wrote:
 
 
 
   On 09.06.2013 15:33, Kazi Moyeen ul Huq wrote:
 
  
 
   java -Djava.library.path=/usr/lib/**jni -jar st.jar
 
  
 
  
 
   Hello Kazi,
 
  
 
   the default installation path for GLPK and GLPK for Java is
 
   /usr/local
 
  
 
   If you did not configure with --prefix the command line to execute you
 jar
 
   file should be
 
  
 
   java -Djava.library.path=/usr/**local/lib/jni \
 
 -classpath /usr/local/share/java/glpk-**java.jar -jar st.jar
 
  
 
   Best regards
 
  
 
   Heinrich Schuchardt
 
  

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Re: [Help-glpk] [Fwd: Need help running GLPK code in Ubuntu server]

[xypron . glpk]

Hello Kazi

GLPK for Java looks in /usr/include and /usr/local/include for glpk.h.

Best regards

Heinrich Schuchardt

http://www.xypron.de

Am 10.06.13 um 13:42 schrieb Kazi Moyeen ul Huq

 Hi,
 
 Should usr/include contain a copy of glpk.h ? I don't have one. Should I
 
 copy the glpk.h to usr/include or should I install another time ?
 
 
 
 I installed glpk4.50 in the home directory. But, glpsol --version shows
 
  GLPSOL: GLPK LP/MIP Solver, v4.50
 
 -Kazi
 
 
 
 
 
 
 
 On Mon, Jun 10, 2013 at 3:26 AM, xypron.g...@gmx.de wrote:
 
 
 
  Hello Kazi,
 
 
 
  glpk-4.50/src/glpk.h has no constyant LPX_LP. You obviously use a GLPK for
 
  Java built against an older include file.
 
 
 
  Check directory /usr/include.
 
 
 
  Best regards
 
 
 
  Heinrich Schuchardt
 
 
 
  http://www.xypron.de
 
 
 
  Am 09.06.13 um 21:54 schrieb Kazi Moyeen ul Huq
 
 
 
   Hi,
 
  
 
   What is this Timer-0 error ?
 
  
 
   Thanks
 
  
 
   Kazi.
 
  
 
  
 
  
 
   ~/application/state-optimizer$ java
 
  -Djava.library.path=/usr/local/lib/jni/
 
  
 
   -classpath /usr/local/share/java/glpk-java.jar -jar st.jar
 
  
 
  
 
  
 
   Problem created ...test_MPC3
 
  
 
  
 
  
 
   *Exception in thread Timer-0 java.lang.UnsatisfiedLinkError:
 
  
 
   org.gnu.glpk.GLPKJNI.LPX_LP_get()I*
 
  
 
   at org.gnu.glpk.GLPKJNI.LPX_LP_get(Native Method)
 
  
 
at org.gnu.glpk.GLPKConstants.clinit(GLPKConstants.java:122)
 
  
 
   at
 
  
 
  
 
  org.totalgrid.reef.examples.stateoptimizer.DESDAlgorithm.optimize(DESDAlgorithm.java:145)
 
  
 
at
 
  
 
  
 
  org.totalgrid.reef.examples.stateoptimizer.StateOptimizerManager$1.run(StateOptimizerManager.java:65)
 
  
 
   at java.util.TimerThread.mainLoop(Timer.java:534)
 
  
 
at java.util.TimerThread.run(Timer.java:484)
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
   -Kazi
 
  
 
  
 
  
 
  
 
  
 
   On Sun, Jun 9, 2013 at 9:46 AM, Heinrich Schuchardt xypron.g...@gmx.de
 
  wrote:
 
  
 
  
 
  
 
On 09.06.2013 15:33, Kazi Moyeen ul Huq wrote:
 
  
 
   
 
  
 
java -Djava.library.path=/usr/lib/**jni -jar st.jar
 
  
 
   
 
  
 
   
 
  
 
Hello Kazi,
 
  
 
   
 
  
 
the default installation path for GLPK and GLPK for Java is
 
  
 
/usr/local
 
  
 
   
 
  
 
If you did not configure with --prefix the command line to execute you
 
  jar
 
  
 
file should be
 
  
 
   
 
  
 
java -Djava.library.path=/usr/**local/lib/jni \
 
  
 
  -classpath /usr/local/share/java/glpk-**java.jar -jar st.jar
 
  
 
   
 
  
 
Best regards
 
  
 
   
 
  
 
Heinrich Schuchardt
 
  
 
   
 
 

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Re: [Help-glpk] [Fwd: Need help running GLPK code in Ubuntu server]

[Heinrich Schuchardt]

Hello Kazi,

in the description on
http://glpk-java.sourceforge.net/gettingStarted.html
I forgot the following step after installation of GLPK.

sudo ldconfig

Best regards

Heinrich Schuchardt

On 09.06.2013 01:23, Kazi Moyeen ul Huq wrote:

Hi,
Looks like I made some progress ! But, I received these 2 messages, when I
was installing according to the
http://glpk-java.sourceforge.net/gettingStarted.html , GLPK /LPK for Java
instructions :

1. In the glpk 4.50 installation, after make install (no error msg upto
this point) :
~/glpk-4.50$ glpsol --version
glpsol: error while loading shared libraries: libglpk.so.35: cannot open
shared object file: No such file or directory

2.During make check for glpk-java-1.0.28 :
The dynamic link library for GLPK for Java could not be loaded. Consider
using
java -Djava.library.path=

3. when I tried to test run my program, I got the following error :
The dynamic link library for GLPK for Java could not be loaded.
Consider using
java -Djava.library.path=
Exception in thread Timer-0 java.lang.UnsatisfiedLinkError: no glpk_java
in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1681)
  at java.lang.Runtime.loadLibrary0(Runtime.java:840)
at java.lang.System.loadLibrary(System.java:1047)
  at org.gnu.glpk.GLPK.clinit(GLPK.java:20)
   ... ... ...

The detailed error messages are attached in the email,

Please suggest how I can take care of the dynamic link library error ?

Thanks a lot
Kazi


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Re: [Help-glpk] [Fwd: Need help running GLPK code in Ubuntu server]

[Kazi Moyeen ul Huq]

Hi,
The 1  2 issue in the previous mail is now solved.
But I still have the 3rd problem. For some reason it can't load the dynamic
library during runtime. Any suggestion for that ?

I'm using the following command to run the executable jar file ( it works
in the latest version of Ubuntu)

java -Djava.library.path=/usr/lib/jni -jar st.jar

Thanks
Kazi

--
The dynamic link library for GLPK for Java could not be loaded.
Consider using
java -Djava.library.path=
Exception in thread Timer-0 java.lang.UnsatisfiedLinkError: no glpk_java
in java.library.path
 at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1681)
at java.lang.Runtime.loadLibrary0(Runtime.java:840)
 at java.lang.System.loadLibrary(System.java:1047)
at org.gnu.glpk.GLPK.clinit(GLPK.java:20)
at
org.totalgrid.reef.examples.stateoptimizer.DESDAlgorithm.optimize(DESDAlgorithm.java:138)
 at
org.totalgrid.reef.examples.stateoptimizer.StateOptimizerManager$1.run(StateOptimizerManager.java:65)
at java.util.TimerThread.mainLoop(Timer.java:534)
 at java.util.TimerThread.run(Timer.java:484)



On Sun, Jun 9, 2013 at 3:27 AM, Heinrich Schuchardt xypron.g...@gmx.dewrote:

 Hello Kazi,

 in the description on
 http://glpk-java.sourceforge.**net/gettingStarted.htmlhttp://glpk-java.sourceforge.net/gettingStarted.html
 I forgot the following step after installation of GLPK.

 sudo ldconfig

 Best regards

 Heinrich Schuchardt


 On 09.06.2013 01:23, Kazi Moyeen ul Huq wrote:

 Hi,
 Looks like I made some progress ! But, I received these 2 messages, when I
 was installing according to the
 http://glpk-java.sourceforge.**net/gettingStarted.htmlhttp://glpk-java.sourceforge.net/gettingStarted.html,
  GLPK /LPK for Java
 instructions :

 1. In the glpk 4.50 installation, after make install (no error msg upto
 this point) :
 ~/glpk-4.50$ glpsol --version
 glpsol: error while loading shared libraries: libglpk.so.35: cannot open
 shared object file: No such file or directory

 2.During make check for glpk-java-1.0.28 :
 The dynamic link library for GLPK for Java could not be loaded. Consider
 using
 java -Djava.library.path=

 3. when I tried to test run my program, I got the following error :
 The dynamic link library for GLPK for Java could not be loaded.
 Consider using
 java -Djava.library.path=
 Exception in thread Timer-0 java.lang.**UnsatisfiedLinkError: no
 glpk_java
 in java.library.path
 at java.lang.ClassLoader.**loadLibrary(ClassLoader.java:**1681)
   at java.lang.Runtime.**loadLibrary0(Runtime.java:840)
 at java.lang.System.loadLibrary(**System.java:1047)
   at org.gnu.glpk.GLPK.clinit(**GLPK.java:20)
... ... ...

 The detailed error messages are attached in the email,

 Please suggest how I can take care of the dynamic link library error ?

 Thanks a lot
 Kazi


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Re: [Help-glpk] [Fwd: Need help running GLPK code in Ubuntu server]

[Heinrich Schuchardt]

On 09.06.2013 15:33, Kazi Moyeen ul Huq wrote:

java -Djava.library.path=/usr/lib/jni -jar st.jar


Hello Kazi,

the default installation path for GLPK and GLPK for Java is
/usr/local

If you did not configure with --prefix the command line to execute you 
jar file should be


java -Djava.library.path=/usr/local/lib/jni \
  -classpath /usr/local/share/java/glpk-java.jar -jar st.jar

Best regards

Heinrich Schuchardt

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Re: [Help-glpk] [Fwd: Need help running GLPK code in Ubuntu server]

[Kazi Moyeen ul Huq]

Hi,
I tried to install the dependencies. Looks like the library libgmp-dev 
isn't available for the lucid suite.
http://packages.ubuntu.com/search?keywords=libgmp-dev .

I installed all the other build-depends: debhelper, cdbs, libltdl-dev,
zlib1g-dev, libiodbc2-dev, libmysqlclient-dev, automake, autoconf, libtool.
libgmp-dev gave me the error msg -- E: Couldn't find package libgmp-dev.

Is there any work-around to that ? I'll try to install it from the other
suites ( precise) but I get a feeling from previous experience that the
server denies to install.

Thanks.
Kazi


On Fri, Jun 7, 2013 at 3:34 PM, Heinrich Schuchardt xypron.g...@gmx.dewrote:

 Hello Kazi,


  When I used sudo apt-get install libglpk-java , the server installs
  libglpk-java:  1.0.1-1.1. Then when I tried to run my program ( also

 You seem to be on an outdated version of Ubuntu (lucid). The current
 version is Ubuntu 12.04 LTS (Precise Pangolin).

 I suggest you uninstall GLPK and GLPK for Java on your Ubuntu server.
 sudo apt-get remove libglpk0 libglpk-dev
 sudo apt-get autoremove

 Install the build-depends: debhelper, cdbs, libgmp-dev, libltdl-dev,
 zlib1g-dev, libiodbc2-dev, libmysqlclient-dev, automake, autoconf, libtool

 Then build GLPK and GLPK for Java from source as described on
 http://glpk-java.sourceforge.**net/gettingStarted.htmlhttp://glpk-java.sourceforge.net/gettingStarted.html

 When you want to install with iODBC use this configure line for GLPK:
 configure --enable-dl --enable-odbc --enable-mysql --with-gmp

 If you prefer UnixODBC you will need unixodbc-dev instead of
 libiodbc2-dev, and may use this configuration line for GLPK:

 configure --enable-dl --enable-odbc=unix --enable-mysql --with-gmp

 Best regards

 Heinrich Schuchardt



 On 07.06.2013 16:41, Andrew Makhorin wrote:

  Forwarded Message 
 From: Kazi Moyeen ul Huq
 To: help-glpk@gnu.org
 Subject: Need help running GLPK code in Ubuntu server
 Date: Fri, 7 Jun 2013 08:41:41 -0400

 Hi,
 I wrote a GLPK program in Windows-Java using the current vesrion of
 GLPK-java (1.0.28). It works well in windows. Now, I have to port it to
 a Ubuntu server. I'm an intermediate level Ubuntu user.


 When I used sudo apt-get install libglpk-java , the server installs
 libglpk-java:  1.0.1-1.1. Then when I tried to run my program ( also the
 test program given in the glpk examples ) it gives the the message :


 A. for  lp = GLPK.glp_create_prob();
 Exception in thread main java.lang.**UnsatisfiedLinkError:
 org.gnu.glpk.GLPKJNI.glp_**create_prob()J
 at org.gnu.glpk.GLPKJNI.glp_**create_prob(Native Method)


 B. forSystem.out.println(GLPK.glp_**version());
 Exception in thread main java.lang.**UnsatisfiedLinkError:
 org.gnu.glpk.GLPKJNI.glp_**version()Ljava/lang/String;



 Please suggest me what I should do next to make my program run in the
 installed 1.0.1-1.1 version in server.( any modification required ? )



 Thanks in advance,
 Moyeen


 ==**===

 for further information, I also tried these:

 A. I tried to change the repository and install the 1.0.18-1
 from  
 http://us.archive.ubuntu.com/**ubuntu/http://us.archive.ubuntu.com/ubuntu/precise/universe
  amd64
 Packages instead of current  lucid/universe amd64 Packages but the
 server fails to install it. It says some dependencies can't be
 installed.


 B. similar thing happens when I tried to manually install by
 using ./configure
 then I received an error -
 configure: error: glpk.h not found
 The detail error message is attached.


 ==**=








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 https://lists.gnu.org/mailman/**listinfo/help-glpkhttps://lists.gnu.org/mailman/listinfo/help-glpk



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Re: [Help-glpk] [Fwd: Need help running GLPK code in Ubuntu server]

[xypron . glpk]

Hello Kazi,

GLPK can also be build without GMP.

Try package libgmp3-dev.

Best regards

Heinrich Schuchardt

http://www.xypron.de

Am 08.06.13 um 19:55 schrieb Kazi Moyeen ul Huq

 Hi,
 
 I tried to install the dependencies. Looks like the library libgmp-dev 
 
 isn't available for the lucid suite.
 
 http://packages.ubuntu.com/search?keywords=libgmp-dev .
 
 
 
 I installed all the other build-depends: debhelper, cdbs, libltdl-dev,
 
 zlib1g-dev, libiodbc2-dev, libmysqlclient-dev, automake, autoconf, libtool.
 
 libgmp-dev gave me the error msg -- E: Couldn't find package libgmp-dev.
 
 
 
 Is there any work-around to that ? I'll try to install it from the other
 
 suites ( precise) but I get a feeling from previous experience that the
 
 server denies to install.
 
 
 
 Thanks.
 
 Kazi
 
 
 
 
 
 On Fri, Jun 7, 2013 at 3:34 PM, Heinrich Schuchardt xypron.g...@gmx.dewrote:
 
 
 
  Hello Kazi,
 
 
 
 
 
   When I used sudo apt-get install libglpk-java , the server installs
 
   libglpk-java:  1.0.1-1.1. Then when I tried to run my program ( also
 
 
 
  You seem to be on an outdated version of Ubuntu (lucid). The current
 
  version is Ubuntu 12.04 LTS (Precise Pangolin).
 
 
 
  I suggest you uninstall GLPK and GLPK for Java on your Ubuntu server.
 
  sudo apt-get remove libglpk0 libglpk-dev
 
  sudo apt-get autoremove
 
 
 
  Install the build-depends: debhelper, cdbs, libgmp-dev, libltdl-dev,
 
  zlib1g-dev, libiodbc2-dev, libmysqlclient-dev, automake, autoconf, libtool
 
 
 
  Then build GLPK and GLPK for Java from source as described on
 
  http://glpk-java.sourceforge.**net/gettingStarted.htmlhttp://glpk-java.sourceforge.net/gettingStarted.html
 
 
 
  When you want to install with iODBC use this configure line for GLPK:
 
  configure --enable-dl --enable-odbc --enable-mysql --with-gmp
 
 
 
  If you prefer UnixODBC you will need unixodbc-dev instead of
 
  libiodbc2-dev, and may use this configuration line for GLPK:
 
 
 
  configure --enable-dl --enable-odbc=unix --enable-mysql --with-gmp
 
 
 
  Best regards
 
 
 
  Heinrich Schuchardt
 
 
 
 
 
 
 
  On 07.06.2013 16:41, Andrew Makhorin wrote:
 
 
 
   Forwarded Message 
 
  From: Kazi Moyeen ul Huq
 
  To: help-glpk@gnu.org
 
  Subject: Need help running GLPK code in Ubuntu server
 
  Date: Fri, 7 Jun 2013 08:41:41 -0400
 
 
 
  Hi,
 
  I wrote a GLPK program in Windows-Java using the current vesrion of
 
  GLPK-java (1.0.28). It works well in windows. Now, I have to port it to
 
  a Ubuntu server. I'm an intermediate level Ubuntu user.
 
 
 
 
 
  When I used sudo apt-get install libglpk-java , the server installs
 
  libglpk-java:  1.0.1-1.1. Then when I tried to run my program ( also the
 
  test program given in the glpk examples ) it gives the the message :
 
 
 
 
 
  A. for  lp = GLPK.glp_create_prob();
 
  Exception in thread main java.lang.**UnsatisfiedLinkError:
 
  org.gnu.glpk.GLPKJNI.glp_**create_prob()J
 
  at org.gnu.glpk.GLPKJNI.glp_**create_prob(Native Method)
 
 
 
 
 
  B. forSystem.out.println(GLPK.glp_**version());
 
  Exception in thread main java.lang.**UnsatisfiedLinkError:
 
  org.gnu.glpk.GLPKJNI.glp_**version()Ljava/lang/String;
 
 
 
 
 
 
 
  Please suggest me what I should do next to make my program run in the
 
  installed 1.0.1-1.1 version in server.( any modification required ? )
 
 
 
 
 
 
 
  Thanks in advance,
 
  Moyeen
 
 
 
 
 
  ==**===
 
 
 
  for further information, I also tried these:
 
 
 
  A. I tried to change the repository and install the 1.0.18-1
 
  from  
  http://us.archive.ubuntu.com/**ubuntu/http://us.archive.ubuntu.com/ubuntu/precise/universe
   amd64
 
  Packages instead of current  lucid/universe amd64 Packages but the
 
  server fails to install it. It says some dependencies can't be
 
  installed.
 
 
 
 
 
  B. similar thing happens when I tried to manually install by
 
  using ./configure
 
  then I received an error -
 
  configure: error: glpk.h not found
 
  The detail error message is attached.
 
 
 
 
 
  ==**=
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  __**_
 
  Help-glpk mailing list
 
  Help-glpk@gnu.org
 
  https://lists.gnu.org/mailman/**listinfo/help-glpkhttps://lists.gnu.org/mailman/listinfo/help-glpk
 
 
 
 
 
 

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Re: [Help-glpk] [Fwd: Need help running GLPK code in Ubuntu server]

[Kazi Moyeen ul Huq]

Hi,
Looks like I made some progress ! But, I received these 2 messages, when I
was installing according to the
http://glpk-java.sourceforge.net/gettingStarted.html , GLPK /LPK for Java
instructions :

1. In the glpk 4.50 installation, after make install (no error msg upto
this point) :
~/glpk-4.50$ glpsol --version
glpsol: error while loading shared libraries: libglpk.so.35: cannot open
shared object file: No such file or directory

2.During make check for glpk-java-1.0.28 :
The dynamic link library for GLPK for Java could not be loaded. Consider
using
java -Djava.library.path=

3. when I tried to test run my program, I got the following error :
The dynamic link library for GLPK for Java could not be loaded.
Consider using
java -Djava.library.path=
Exception in thread Timer-0 java.lang.UnsatisfiedLinkError: no glpk_java
in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1681)
 at java.lang.Runtime.loadLibrary0(Runtime.java:840)
at java.lang.System.loadLibrary(System.java:1047)
 at org.gnu.glpk.GLPK.clinit(GLPK.java:20)
  ... ... ...

The detailed error messages are attached in the email,

Please suggest how I can take care of the dynamic link library error ?

Thanks a lot
Kazi



On Sat, Jun 8, 2013 at 4:08 PM, xypron.g...@gmx.de wrote:

 Hello Kazi,

 GLPK can also be build without GMP.

 Try package libgmp3-dev.

 Best regards

 Heinrich Schuchardt

 http://www.xypron.de

 Am 08.06.13 um 19:55 schrieb Kazi Moyeen ul Huq

  Hi,
 
  I tried to install the dependencies. Looks like the library libgmp-dev 
 
  isn't available for the lucid suite.
 
  http://packages.ubuntu.com/search?keywords=libgmp-dev .
 
 
 
  I installed all the other build-depends: debhelper, cdbs, libltdl-dev,
 
  zlib1g-dev, libiodbc2-dev, libmysqlclient-dev, automake, autoconf,
 libtool.
 
  libgmp-dev gave me the error msg -- E: Couldn't find package
 libgmp-dev.
 
 
 
  Is there any work-around to that ? I'll try to install it from the other
 
  suites ( precise) but I get a feeling from previous experience that the
 
  server denies to install.
 
 
 
  Thanks.
 
  Kazi
 
 
 
 
 
  On Fri, Jun 7, 2013 at 3:34 PM, Heinrich Schuchardt xypron.g...@gmx.de
 wrote:
 
 
 
   Hello Kazi,
 
  
 
  
 
When I used sudo apt-get install libglpk-java , the server installs
 
libglpk-java:  1.0.1-1.1. Then when I tried to run my program ( also
 
  
 
   You seem to be on an outdated version of Ubuntu (lucid). The current
 
   version is Ubuntu 12.04 LTS (Precise Pangolin).
 
  
 
   I suggest you uninstall GLPK and GLPK for Java on your Ubuntu server.
 
   sudo apt-get remove libglpk0 libglpk-dev
 
   sudo apt-get autoremove
 
  
 
   Install the build-depends: debhelper, cdbs, libgmp-dev, libltdl-dev,
 
   zlib1g-dev, libiodbc2-dev, libmysqlclient-dev, automake, autoconf,
 libtool
 
  
 
   Then build GLPK and GLPK for Java from source as described on
 
   http://glpk-java.sourceforge.**net/gettingStarted.html
 http://glpk-java.sourceforge.net/gettingStarted.html
 
  
 
   When you want to install with iODBC use this configure line for GLPK:
 
   configure --enable-dl --enable-odbc --enable-mysql --with-gmp
 
  
 
   If you prefer UnixODBC you will need unixodbc-dev instead of
 
   libiodbc2-dev, and may use this configuration line for GLPK:
 
  
 
   configure --enable-dl --enable-odbc=unix --enable-mysql --with-gmp
 
  
 
   Best regards
 
  
 
   Heinrich Schuchardt
 
  
 
  
 
  
 
   On 07.06.2013 16:41, Andrew Makhorin wrote:
 
  
 
    Forwarded Message 
 
   From: Kazi Moyeen ul Huq
 
   To: help-glpk@gnu.org
 
   Subject: Need help running GLPK code in Ubuntu server
 
   Date: Fri, 7 Jun 2013 08:41:41 -0400
 
  
 
   Hi,
 
   I wrote a GLPK program in Windows-Java using the current vesrion of
 
   GLPK-java (1.0.28). It works well in windows. Now, I have to port it
 to
 
   a Ubuntu server. I'm an intermediate level Ubuntu user.
 
  
 
  
 
   When I used sudo apt-get install libglpk-java , the server installs
 
   libglpk-java:  1.0.1-1.1. Then when I tried to run my program ( also
 the
 
   test program given in the glpk examples ) it gives the the message :
 
  
 
  
 
   A. for  lp = GLPK.glp_create_prob();
 
   Exception in thread main java.lang.**UnsatisfiedLinkError:
 
   org.gnu.glpk.GLPKJNI.glp_**create_prob()J
 
   at org.gnu.glpk.GLPKJNI.glp_**create_prob(Native Method)
 
  
 
  
 
   B. forSystem.out.println(GLPK.glp_**version());
 
   Exception in thread main java.lang.**UnsatisfiedLinkError:
 
   org.gnu.glpk.GLPKJNI.glp_**version()Ljava/lang/String;
 
  
 
  
 
  
 
   Please suggest me what I should do next to make my program run in the
 
   installed 1.0.1-1.1 version in server.( any modification required ? )
 
  
 
  
 
  
 
   Thanks in advance,
 
   Moyeen
 
  
 
  
 
   ==**===
 
  
 
   for further information, I also tried these:
 
  
 
   A. I tried to change the 

[Help-glpk] [Fwd: Need help running GLPK code in Ubuntu server]

[Andrew Makhorin]

 Forwarded Message 
From: Kazi Moyeen ul Huq km...@ncsu.edu
To: help-glpk@gnu.org
Subject: Need help running GLPK code in Ubuntu server
Date: Fri, 7 Jun 2013 08:41:41 -0400

Hi,
I wrote a GLPK program in Windows-Java using the current vesrion of
GLPK-java (1.0.28). It works well in windows. Now, I have to port it to
a Ubuntu server. I'm an intermediate level Ubuntu user.


When I used sudo apt-get install libglpk-java , the server installs 
libglpk-java:  1.0.1-1.1. Then when I tried to run my program ( also the
test program given in the glpk examples ) it gives the the message :


A. for  lp = GLPK.glp_create_prob();
Exception in thread main java.lang.UnsatisfiedLinkError:
org.gnu.glpk.GLPKJNI.glp_create_prob()J
at org.gnu.glpk.GLPKJNI.glp_create_prob(Native Method)


B. forSystem.out.println(GLPK.glp_version());
Exception in thread main java.lang.UnsatisfiedLinkError:
org.gnu.glpk.GLPKJNI.glp_version()Ljava/lang/String;



Please suggest me what I should do next to make my program run in the
installed 1.0.1-1.1 version in server.( any modification required ? ) 



Thanks in advance,
Moyeen


=

for further information, I also tried these:  

A. I tried to change the repository and install the 1.0.18-1
from  http://us.archive.ubuntu.com/ubuntu/ precise/universe amd64
Packages instead of current  lucid/universe amd64 Packages but the
server fails to install it. It says some dependencies can't be
installed. 


B. similar thing happens when I tried to manually install by
using ./configure 
then I received an error - 
configure: error: glpk.h not found
The detail error message is attached.


===







glpk.h not found
Description: Binary data
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Re: [Help-glpk] [Fwd: Need help running GLPK code in Ubuntu server]

[Heinrich Schuchardt]

Hello Kazi,

 When I used sudo apt-get install libglpk-java , the server installs
 libglpk-java:  1.0.1-1.1. Then when I tried to run my program ( also

You seem to be on an outdated version of Ubuntu (lucid). The current
version is Ubuntu 12.04 LTS (Precise Pangolin).

I suggest you uninstall GLPK and GLPK for Java on your Ubuntu server.
sudo apt-get remove libglpk0 libglpk-dev
sudo apt-get autoremove

Install the build-depends: debhelper, cdbs, libgmp-dev, libltdl-dev,
zlib1g-dev, libiodbc2-dev, libmysqlclient-dev, automake, autoconf, libtool

Then build GLPK and GLPK for Java from source as described on
http://glpk-java.sourceforge.net/gettingStarted.html

When you want to install with iODBC use this configure line for GLPK:
configure --enable-dl --enable-odbc --enable-mysql --with-gmp

If you prefer UnixODBC you will need unixodbc-dev instead of 
libiodbc2-dev, and may use this configuration line for GLPK:


configure --enable-dl --enable-odbc=unix --enable-mysql --with-gmp

Best regards

Heinrich Schuchardt



On 07.06.2013 16:41, Andrew Makhorin wrote:

 Forwarded Message 
From: Kazi Moyeen ul Huq
To: help-glpk@gnu.org
Subject: Need help running GLPK code in Ubuntu server
Date: Fri, 7 Jun 2013 08:41:41 -0400

Hi,
I wrote a GLPK program in Windows-Java using the current vesrion of
GLPK-java (1.0.28). It works well in windows. Now, I have to port it to
a Ubuntu server. I'm an intermediate level Ubuntu user.


When I used sudo apt-get install libglpk-java , the server installs
libglpk-java:  1.0.1-1.1. Then when I tried to run my program ( also the
test program given in the glpk examples ) it gives the the message :


A. for  lp = GLPK.glp_create_prob();
Exception in thread main java.lang.UnsatisfiedLinkError:
org.gnu.glpk.GLPKJNI.glp_create_prob()J
at org.gnu.glpk.GLPKJNI.glp_create_prob(Native Method)


B. forSystem.out.println(GLPK.glp_version());
Exception in thread main java.lang.UnsatisfiedLinkError:
org.gnu.glpk.GLPKJNI.glp_version()Ljava/lang/String;



Please suggest me what I should do next to make my program run in the
installed 1.0.1-1.1 version in server.( any modification required ? )



Thanks in advance,
Moyeen


=

for further information, I also tried these:

A. I tried to change the repository and install the 1.0.18-1
from  http://us.archive.ubuntu.com/ubuntu/ precise/universe amd64
Packages instead of current  lucid/universe amd64 Packages but the
server fails to install it. It says some dependencies can't be
installed.


B. similar thing happens when I tried to manually install by
using ./configure
then I received an error -
configure: error: glpk.h not found
The detail error message is attached.


===








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Re: [Help-glpk] [Fwd: Re: Help: How to build MIP model]

[Xypron]

Hello Matteo,

you are right that the GLPK API has some complexity, which a beginner 
may want to avoid.


The following C++ library tries to make creating the LP matrix entries 
easier:

http://sourceforge.net/projects/iajaarh/

More elaborate wrappers for GLPK may be found here:

Python:
http://pymprog.sourceforge.net/tutorial.html#a-dive-in-example
Java:
http://javailp.sourceforge.net/
http://www.xypron.de/projects/linopt/

Best regards

Heinrich Schuchardt



On 04.01.2013 20:31, Andrew Makhorin wrote:

 Forwarded Message 
From: Matteo Fischetti DEIm.fische...@gmail.com
Subject: Re: [Help-glpk] Help: How to build MIP model
Date: Fri, 04 Jan 2013 15:43:34 +0100

Hi Andrew.

to easy writing a MIP model (in Cplex) using C, I wrote the trivial
functions below

 www.dei.unipd.it/~fisch/easy_lp.c

I do not know if you have something similar in GLPK, other than MathProg
of course, that could help beginners to write models with 1-index
variables (for 2-index var.s similar functions can be written)

Take care

--Matteo--


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[Help-glpk] [Fwd: Re: Help: How to build MIP model]

[Andrew Makhorin]

 Forwarded Message 
From: Matteo Fischetti DEI m.fische...@gmail.com
Reply-to: m.fische...@gmail.com
To: Andrew Makhorin m...@gnu.org
Subject: Re: [Help-glpk] Help: How to build MIP model
Date: Fri, 04 Jan 2013 15:43:34 +0100

Hi Andrew.

to easy writing a MIP model (in Cplex) using C, I wrote the trivial 
functions below

www.dei.unipd.it/~fisch/easy_lp.c

I do not know if you have something similar in GLPK, other than MathProg 
of course, that could help beginners to write models with 1-index 
variables (for 2-index var.s similar functions can be written)

Take care

--Matteo--


Il 04/01/2013 15:01, lucacoopers ha scritto:
 First, thanks to all. Jeff you're right. I misspelled my problem. The problem
 is:

 minimize { sum[from i=1 to 96] of {c1*x1(i)+c2*x2+c3*x3(i)} }
 with this constraints:
   x1(i)+x2+x3(i)=c4(i)
   x1(i)+x3(i)=c5
   x1(i)=5
 0=x3(i)=100
 0=x2=1 binary

 where x1, x3 and c4 are vectors of 96 elements. c1,c2,c3,c5 are
 numbers.

 Sorry for the mistake. I wish someone would write the problem in a form
 similar to that described above. I need to learn how to write a minimization
 problem with glpk with the language c.

 thanks again to all:-)


-- 
Prof. Matteo Fischetti
DEI, University of Padova
via Gradenigo 6/A
I-35131 Padova (Italy)
e-mail: matteo.fische...@unipd.it
web: www.dei.unipd.it/~fisch
reports: www.dei.unipd.it/~fisch/papers




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[Help-glpk] Fwd: glpk help

[Sajal Mukhopadhyay]

Ok. Thanks for your reply. May be your reply will do the trick I wanted. If
it works I will let you know. Thanks again.

-- Forwarded message --
From: Robbie Morrison rob...@actrix.co.nz
Date: Thu, Jun 7, 2012 at 10:07 PM
Subject: Re: [Help-glpk] glpk help
To: GLPK help help-glpk@gnu.org
Cc: Sajal Mukhopadhyay sajm...@gmail.com




To:   help-glpk@gnu.org
Subject:  [Help-glpk] glpk help
From: Sajal Mukhopadhyay sajm...@gmail.com
Date: Thu, 7 Jun 2012 10:04:09 +0530


 Hello,

 Say I have file named g1.mod and I have a file named t1.py. Can I
 call g1.mod from t1.py? What is the procedure?

 --
 Sajal Mukhopadhyay,
 Asst. Professor,
 NIT,Durgapur,
 Durgapur-9.

Hello Sajal

It would be better to title your posting more precisely.
glpk help is hardly informative.

The following GLPK wikibook page discusses scripting
and GLPK in general, but also has some specific remarks
about python near the end:

 http://en.wikibooks.org/wiki/GLPK/Scripting_plus_MathProg

See this section in particular:


http://en.wikibooks.org/wiki/GLPK/Scripting_plus_MathProg#Suppressing_terminal_output_under_Python

HTH, Robbie
---
Robbie Morrison
PhD student -- policy-oriented energy system simulation
Technical University of Berlin (TU-Berlin), Germany
University email (redirected) : morri...@iet.tu-berlin.de
Webmail (preferred)   : rob...@actrix.co.nz
[from Webmail client]





-- 
Sajal Mukhopadhyay,
Asst. Professor,
NIT,Durgapur,
Durgapur-9.
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[Help-glpk] Fwd: glpk help

[Sajal Mukhopadhyay]

No answer of this message yet. Please help.

-- Forwarded message --
From: Sajal Mukhopadhyay sajm...@gmail.com
Date: Mon, Mar 5, 2012 at 12:20 AM
Subject: Re: [Help-glpk] glpk help
To: Andrew Makhorin m...@gnu.org


I have seen the gmpl.pdf and the problem is solved to some extent. Thank
you again. Now I am facing another problem.

I am trying to solve multiobjective solid transportation problem. I am
using some goal programming technique. In this case what I have to do is to
find out optimal solution of the first objective and based on the x[i,j,k]
found in this case we have to find out the value of the other objective
function. Next we have to find out the optimal solution of the next
objective and based on x[i,j,k] found we have find out the value of the
other objectives and so on.

Now my problem is say I have found the values of the x[i,j,k] for finding
the optimal value of the first objective. Now I have to calculate the value
of the other objectives based on this x[i,j,k]. How can I do that in the
same program. Say my program name is glp1.mod. My question is can I do that
in the same program or I have to write a separate program. May be my
problem is explained properly. Please help me again.

On Thu, Feb 23, 2012 at 5:37 PM, Andrew Makhorin m...@gnu.org wrote:

I am new to glpk. I want to represent c[i,j,k] for some
  transportation problem concerning the fact that the depot i serving
  customer j  with vehicle k. How can i represent the table in this
  environment. All code example, so far found by me, dealing with only
  c[i,j]. Please help me.

 Please see the MathProg language reference (doc/gmpl.pdf) and example
 models (examples/*.mod) included in the glpk distribution. In
 particular, see the example model train.mod; it includes
 multidemensional parameters and variables.

 In the future please use a more descriptive subject line for your
 messages. Thanks.




-- 
Sajal Mukhopadhyay,
Asst. Professor,
NIT,Durgapur,
Durgapur-9.



-- 
Sajal Mukhopadhyay,
Asst. Professor,
NIT,Durgapur,
Durgapur-9.
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Re: [Help-glpk] Fwd: glpk help

[Robbie Morrison]

Hello Sajal

You could certainly achieve your task using the C
interface to GLPK.  I program in C++ and have a class
that holds five objective functions.  Before calling my
solver member function (aka method), I nominate one of
the five to be the active objective and later calculate
the value of the remaining four after the solver has
returned. Now that is not exactly what you asked about,
but it does share similarities.

I am guessing here, but you could try some background
scripting in your preferred scripting language (bash,
perl, python, ruby) and write out new data files on the
fly.  The GLPK wikibook has some material on scripting
and GLPSOL:

  http://en.wikibooks.org/wiki/GLPK

Or, again guessing, you could take a hybrid approach
and use a GLPK scripting language binding (python, R).

The approach you select is probably a mater of which
tools and languages you feel most comfortable with.

Can I echo Andrew's comment about using a more
descriptive subject line.  It makes it easier for
people who want to later scan thru the archives.

Good luck, Robbie

 
 To:   help-glpk@gnu.org
 Subject:  [Help-glpk] Fwd:  glpk help
 From: Sajal Mukhopadhyay sajm...@gmail.com
 Date: Mon, 5 Mar 2012 17:16:43 +0530
 

 No answer of this message yet. Please help.

 -- Forwarded message --
 From: Sajal Mukhopadhyay sajm...@gmail.com
 Date: Mon, Mar 5, 2012 at 12:20 AM
 Subject: Re: [Help-glpk] glpk help
 To: Andrew Makhorin m...@gnu.org

 I have seen the gmpl.pdf and the problem is solved to some extent. Thank
 you again. Now I am facing another problem.

 I am trying to solve multiobjective solid transportation problem. I am
 using some goal programming technique. In this case what I have to do is to
 find out optimal solution of the first objective and based on the x[i,j,k]
 found in this case we have to find out the value of the other objective
 function. Next we have to find out the optimal solution of the next
 objective and based on x[i,j,k] found we have find out the value of the
 other objectives and so on.

 Now my problem is say I have found the values of the x[i,j,k] for finding
 the optimal value of the first objective. Now I have to calculate the value
 of the other objectives based on this x[i,j,k]. How can I do that in the
 same program. Say my program name is glp1.mod. My question is can I do that
 in the same program or I have to write a separate program. May be my
 problem is explained properly. Please help me again.

 On Thu, Feb 23, 2012 at 5:37 PM, Andrew Makhorin m...@gnu.org wrote:

I am new to glpk. I want to represent c[i,j,k] for some
  transportation problem concerning the fact that the depot i serving
  customer j  with vehicle k. How can i represent the table in this
  environment. All code example, so far found by me, dealing with only
  c[i,j]. Please help me.

 Please see the MathProg language reference (doc/gmpl.pdf) and example
 models (examples/*.mod) included in the glpk distribution. In
 particular, see the example model train.mod; it includes
 multidemensional parameters and variables.

 In the future please use a more descriptive subject line for your
 messages. Thanks.

 --
 Sajal Mukhopadhyay,
 Asst. Professor,
 NIT,Durgapur,
 Durgapur-9.
 -- next part --
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 --

---
Robbie Morrison
PhD student -- policy-oriented energy system simulation
Technical University of Berlin (TU-Berlin), Germany
University email (redirected) : morri...@iet.tu-berlin.de
Webmail (preferred)   : rob...@actrix.co.nz
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[Help-glpk] [Fwd: please help me about glpk installation on matlab]

[Andrew Makhorin]

 Forwarded Message 
From: 赵炜 zhaowe...@hotmail.com
To: help-glpk@gnu.org
Subject: please help me about glpk installation on matlab
Date: Mon, 28 Nov 2011 19:46:52 +0800

hello, i want to use glpk at matlab,but when i copy the file of glpkmex
and glpk 4.47 into matlab toolbox,and set path on matlab, the matlab
can't run the glpktest. 
 run makeglpkmex.m
??? Error using == run
The function, script, or class makeglpkmex
cannot be indexed using {} or . indexing.
 
 run glpktest1.m
??? Error using == run
The function, script, or class glpktest1
cannot be indexed using {} or . indexing.
 
 glpktest1
LP problem
??? Undefined command/function 'glpkcc'.
 
Error in == glpk at 501
[xopt, fmin, status, extra] = glpkcc(c, a, b, lb, ub, ctype, vartype,
sense, param);
 
Error in == glpktest1 at 21
[xmin,fmin,status,extra]=glpk(c,a,b,lb,ub,ctype,vartype,s,param)
 
 
 
the testall of matlab show me that :
test_folder =
 
C:\MATLAB7\toolbox\cobra\testing\testSolvers\
 
Error in LP test
Error in MILP test
Error in QP test
Error in MIQP test
Error in NLP test 1
Warning: MIQP solver CPLEX through Tomlab not usable: tomRun.m not in
Matlab path
 In changeCobraSolver at 239
  In sampleNLP at 16
  In testSolvers at 214
  In testAll at 41
Error in NLP test 2
testSolvers did not pass
 
notPassedCnt =
 
i change the glpk4.47 to 4.35,the result is the same.i found on net,but
still puzzled,i do not know how to resolve it. would you help me??i need
your help. thank you evry much.
 
Austin,a Ph.D candidate from China,Guangzhou City.


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[Help-glpk] [Fwd: need help for the routine glp_intopt]

[Andrew Makhorin]

 Forwarded Message 
From: Lounes BENTAHA mlo...@hotmail.fr
To: help-glpk@gnu.org
Subject: need help for the routine glp_intopt
Date: Fri, 9 Sep 2011 11:04:41 +0200

Hello everybody!

I'm a student at Paris Dauphine University and i'm using GLPK to solve
MIP problems (as part of my master thesis : Operational Research and
Decision Aiding). 

When i solve my MIP problem with these two basic API Routines :

glp_simplex(mip, NULL);
glp_intopt(mip, NULL);

this message is shown on the screen:

OPTIMAL SOLUTION FOUND (Optimal solution to LP rekaxation)
other comments...
INTEGER OPTIMAL SOLUTION FOUND

The problem is the fact that this optimal integer solution is not
integer

Any help or idea?

Thanks in advance!



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[Help-glpk] [Fwd: Need help in callback routine for GLP_IBRANCH]

[Andrew Makhorin]

 Forwarded Message 
From: sheetal murkute shv...@gmail.com
To: help-glpk@gnu.org
Subject: Need help in callback routine for GLP_IBRANCH
Date: Mon, 4 Jul 2011 01:00:04 -0400

Hi,

I am using GLPK callback routine to change the behavior of branch and
bound method.
I use glp_ios_reason to determine the reason for calling the call-back
routine.

In this, for the reason GLP_IBRANCH, I have to change rule to select
next variable to branch on.
For this, I need the values of all the variables for LP relaxation
solution at down branch (when candidate variable is set to 0) and up
branch (when candidate variable is set to 1).
I am using following logic for getting these values, but I get the error
that glp_simplex is not allowed at this step. 
Will you please guide me on this?

[ Note:
here j is the candidate variable index obtained from the routine
glp_ios_can_branch(tree, j). 
'numcol' is the total number of variables in sub-problem obtained from
the routine glp_get_num_cols(glp_ios_get_prob(tree)).
]

glp_set_col_bnds(glp_ios_get_prob(tree), j, GLP_UP, 0.0, 0.0);
glp_simplex(glp_ios_get_prob(tree),NULL);
for(i=1,j=1; j= numcol ; i++,j++)
xlf[i] = glp_get_col_prim(glp_ios_get_prob(tree),j);


glp_set_col_bnds(glp_ios_get_prob(tree), j, GLP_LO, 1.0, 0.0);
glp_simplex(glp_ios_get_prob(tree),NULL);
for(i=1,j=1; j= numcol ; i++,j++)
xuf[i] = glp_get_col_prim(glp_ios_get_prob(tree),j);

-- 




Thanks with Best Regards,
Sheetal 




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Re: [Help-glpk] [Fwd: Need help in callback routine for GLP_IBRANCH]

[Andrew Makhorin]

 I am using GLPK callback routine to change the behavior of branch and
 bound method.
 I use glp_ios_reason to determine the reason for calling the call-back
 routine.
 
 In this, for the reason GLP_IBRANCH, I have to change rule to select
 next variable to branch on.
 For this, I need the values of all the variables for LP relaxation
 solution at down branch (when candidate variable is set to 0) and up
 branch (when candidate variable is set to 1).
 I am using following logic for getting these values, but I get the error
 that glp_simplex is not allowed at this step. 
 Will you please guide me on this?
 
 [ Note:
 here j is the candidate variable index obtained from the routine
 glp_ios_can_branch(tree, j). 
 'numcol' is the total number of variables in sub-problem obtained from
 the routine glp_get_num_cols(glp_ios_get_prob(tree)).
 ]
 
 glp_set_col_bnds(glp_ios_get_prob(tree), j, GLP_UP, 0.0, 0.0);
 glp_simplex(glp_ios_get_prob(tree),NULL);
 for(i=1,j=1; j= numcol ; i++,j++)
 xlf[i] = glp_get_col_prim(glp_ios_get_prob(tree),j);
 
 
 glp_set_col_bnds(glp_ios_get_prob(tree), j, GLP_LO, 1.0, 0.0);
 glp_simplex(glp_ios_get_prob(tree),NULL);
 for(i=1,j=1; j= numcol ; i++,j++)
 xuf[i] = glp_get_col_prim(glp_ios_get_prob(tree),j);
 

Since within the callback routine the problem object is used by the mip
solver, you cannot change it arbitrarily--the operations that change the
problem object are limited to changing row/column bounds, adding rows,
and removing rows added to the current subproblem. In partcular,
glp_simplex may change the current basis and solution components, so it
cannot be used for the current subproblem. For more details please see
the glpk reference manual.

If you need to fix some variables and then call glp_simplex (I guess
you'd like to implement something like a strong branching), you may
create a copy of the current subproblem with the routine glp_clone_prob,
perform all necessary calculations, and then delete the copy on exit
from the callback routine.


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[Help-glpk] Re [Fwd: Need help in callback routine for GLP_IBRANCH]

[Robbie Morrison]

Hello Sheetal, Pradeep, Nicolas, Andrew

I started a small stub in the GLPK wikibook on this
general topic a while back:

  
http://en.wikibooks.org/wiki/GLPK/Third-party_API_wrappers#COIN-OR_Open_solver_interface_.28Osi.29

If those involved can post their thoughts and
conclusions back here, then I will collect these and
rework the text.  It may indeed be worth migrating to a
new page, something like COIN and GLPK.

Andrew specifically: can I post '3party.c' on the
wikibook?  In which case, is it public domain?  Or
should it get a license notice?  TIA.

best wishes, Robbie
---
Robbie Morrison
PhD student -- policy-oriented energy system simulation
Technical University of Berlin (TU-Berlin), Germany
University email (redirected) : morri...@iet.tu-berlin.de
Webmail (preferred)   : rob...@actrix.co.nz
[from Webmail client]



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Re: [Help-glpk] [Fwd: Need help in callback routine for GLP_IBRANCH]

[Andrew Makhorin]

Hi Robbie,

 I started a small stub in the GLPK wikibook on this
 general topic a while back:
 
   
 http://en.wikibooks.org/wiki/GLPK/Third-party_API_wrappers#COIN-OR_Open_solver_interface_.28Osi.29
 
 If those involved can post their thoughts and
 conclusions back here, then I will collect these and
 rework the text.  It may indeed be worth migrating to a
 new page, something like COIN and GLPK.
 
 Andrew specifically: can I post '3party.c' on the
 wikibook?  In which case, is it public domain?  Or
 should it get a license notice?  TIA.

Well, it is just an example, so let it be in the public domain. Please
add a corresponding notice to the code and put it into the wikibook. And
please also add a comment that that exmaple uses internal (i.e. non-api)
data structures, though all the same things could be implemented on api
level.


Andrew Makhorin


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[Fwd: Re: [Help-glpk] GLPK GUROBI wrapper]

[Andrew Makhorin]

 Forwarded Message 
From: Harley Mackenzie h...@hardsoftware.com
To: Matteo Salani matteo.sal...@idsia.ch, Robbie Morrison
rob...@actrix.co.nz, GLPK-HELP help-glpk@gnu.org
Subject: Re: [Help-glpk] GLPK GUROBI wrapper
Date: Fri, 25 Feb 2011 11:50:49 +1100

Matteo,

I know that the GPL licensing issues do seem heavy handed at times but there is 
a long standing 
approach to point out potential GPL license issues so that they may be resolved 
rather than 
discourage development or not value your contribution. The aim of the GPL is 
make sure that free 
software stays free as I am sure that you can understand that if someone takes 
GPL software code and 
makes it part of their own non-free software, then any changes or improvements 
to the code don't go 
back into the code and also someone can commercially exploit software developed 
by others for the 
benefit of everyone.

I am sure that it is not your intention to exploit anyone, and there a lots of 
people on this list 
who can look at what you are doing, see if there are any potential issues, and 
if there are work 
with you to resolve them. The last thing that anyone on this list wants is for 
people to feel that 
that shouldn't contribute to the software due to licensing issues or that their 
existing work or 
contributions aren't appreciated.

Harley


On 24/02/11 6:55 PM, Matteo Salani wrote:
 Robbie, list members,

 I did not want to raise this flame discussion about licenses...
 I wrote this wrapper form myself and a couple of colleagues and found it 
 useful.

 To me, it doesn't seem to violate any license.
 Anyway, if you think it does, please remove it from the list archives and 
 forget about it.

 all the best,
 Matteo

 On 02/24/2011 12:14 AM, Robbie Morrison wrote:
 Hello list, hello Matteo

 
 Subject:  Re: [Help-glpk] GLPK GUROBI wrapper
 From: Andrew Makhorin
 Date: Wed, 23 Feb 2011 22:58:42 +0300
 

 On Wed, 2011-02-23 at 20:30 +0100, glpk xypron wrote:
 Hello Matteo,

 running your code would violate the license of GLPK
 because Gurobi is not licensed under a license
 compatible to the Gnu Public License.

 Please, observe that Andrew chose to publish GLPK
 under GPL and not LGPL.

 Best regards

 Xypron
 It depends on how Gurobi (which is highly proprietary
 software) is used within the wrapper assuming that the
 wrapper itself is distributed under the GNU GPL or a
 compatible license. I think that in this case Gurobi
 can be considered as a plug-in, so the following
 answers the question:
 http://www.gnu.org/licenses/gpl-faq.html#GPLAndPlugins
 I read thru 'wrapper_gurobi.c' carefully:

http://lists.gnu.org/archive/html/help-glpk/2011-02/txtgH2ubVmjpc.txt

 It seems to me that the final paragraph in the GNU
 GPLAndPlugins section applies, which means this
 constitutes a borderline case.  Moreover Matteo's
 program could probably be re-written in a scripting
 language to enforce any necessary separations.
 Hence my initial thought is that Matteo's code is
 acceptable.

 Although not a legal consideration, I don't see
 this single C file, released under the GPLv2, as
 undermining GLPK in any way.  Or am I missing
 something?

 If 'wrapper_gurobi.c' is deemed okay, then I will put
 an entry for it in the GLPK wikibook.

 Whatever the decision, I would like to record my
 appreciation to Matteo for attempting to contribute
 back to the GLPK ecosystem. Cheers!

 Robbie
 ---
 Robbie Morrison
 PhD student -- policy-oriented energy system simulation
 Technical University of Berlin (TU-Berlin), Germany
 University email (redirected) : morri...@iet.tu-berlin.de
 Webmail (preferred)   : rob...@actrix.co.nz
 [from Webmail client]





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  HARD SoftwareWeb:   www.hardsoftware.com
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[Fwd: RE: [Help-glpk] execute concorde through cygwin command

[Robbie Morrison]

Hello Aniket

As Xypron has already pointed out, this list is for
traffic about GLPK and not concorde.  We would
appreciate it if you could respect that mandate.

In any case, your question about the exactness of
concorde can be easily answered by reading the first
few lines of the concorde homepage.  That would,
I suggest, be a very much better use of everyone's
time, including your own.

with regards
Robbie

 
 To:  help-glpk@gnu.org
 Subject: [Fwd: RE: [Help-glpk] execute concorde through cygwin command
 Message-ID: 1296691084.24130.2.camel@none
 From:Andrew Makhorin m...@gnu.org
 Date:Thu, 03 Feb 2011 02:58:04 +0300
 

  Forwarded Message 
 From: Aniket Karmarkar karmarkarani...@gmail.com
 To: Andrew Makhorin m...@gnu.org
 Cc: help-glpk@gnu.org, glpk xypron xypron.g...@gmx.de
 Subject: Re: [Fwd: RE: [Help-glpk] execute concorde through cygwin
 command line]
 Date: Wed, 2 Feb 2011 15:00:07 -0600

 On the neos server,
 Does concorde(CPLEX) give exact shortest tour for TSP?
 Thanks,
 Aniket

 On Tue, Feb 1, 2011 at 4:43 PM, Andrew Makhorin m...@gnu.org wrote:

  Forwarded Message 
 From: Robert Fourer 4...@northwestern.edu
 Reply-To: 4...@northwestern.edu
 To: 'glpk xypron' xypron.g...@gmx.de, 'Aniket Karmarkar'
 karmarkarani...@gmail.com, help-glpk@gnu.org
 Subject: RE: [Help-glpk] execute concorde through cygwin command
 line
 Date: Tue, 1 Feb 2011 15:17:27 -0600

 Also you can run Concorde over the Internet by taking advantage
 of the NEOS Server:

[snip]

   -Original Message-
   From: help-glpk-bounces+4er=iems.northwestern@gnu.org
  [mailto:help-glpk-
   bounces+4er=iems.northwestern@gnu.org] On Behalf Of glpk
  xypron
   Sent: Tuesday, February 01, 2011 2:49 PM
   To: Aniket Karmarkar; help-glpk@gnu.org
   Subject: Re: [Help-glpk] execute concorde through cygwin
  command line
  
   Hello Aniket,
  
   this list is not on Concorde but on GLPK.

---
Robbie Morrison
PhD student -- policy-oriented energy system simulation
Technical University of Berlin (TU-Berlin), Germany
University email (redirected) : morri...@iet.tu-berlin.de
Webmail (preferred)   : rob...@actrix.co.nz
[from Webmail client]



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[Fwd: RE: [Help-glpk] execute concorde through cygwin command line]

[Andrew Makhorin]

 Forwarded Message 
From: Aniket Karmarkar karmarkarani...@gmail.com
To: Andrew Makhorin m...@gnu.org
Cc: help-glpk@gnu.org, glpk xypron xypron.g...@gmx.de
Subject: Re: [Fwd: RE: [Help-glpk] execute concorde through cygwin
command line]
Date: Wed, 2 Feb 2011 15:00:07 -0600

On the neos server,
Does concorde(CPLEX) give exact shortest tour for TSP?
Thanks,
Aniket

On Tue, Feb 1, 2011 at 4:43 PM, Andrew Makhorin m...@gnu.org wrote:

 Forwarded Message 
From: Robert Fourer 4...@northwestern.edu
Reply-To: 4...@northwestern.edu
To: 'glpk xypron' xypron.g...@gmx.de, 'Aniket Karmarkar'
karmarkarani...@gmail.com, help-glpk@gnu.org
Subject: RE: [Help-glpk] execute concorde through cygwin command
line
Date: Tue, 1 Feb 2011 15:17:27 -0600

Also you can run Concorde over the Internet by taking advantage
of the NEOS Server:

  www.neos-server.org

Click on NEOS Solvers and look under Combinatorial
Optimization and Integer Programming.  You specify an
appropriate Concorde input file to be uploaded from your
computer, and the optimal tour is displayed in your browser.
 (There is also an API for making submissions from your own
program.)

I mention this here because one can also run GLPK through NEOS,
saving the time of installing it locally.  It is hosted for NEOS
at the Univ of Wisconsin currently only with GAMS input, but if
there's interest I think they could be persuaded to put up
versions with input in MathProg and some low-level formats like
MPS and LP.

Bob Fourer
4...@northwestern.edu


 -Original Message-
 From: help-glpk-bounces+4er=iems.northwestern@gnu.org
[mailto:help-glpk-
 bounces+4er=iems.northwestern@gnu.org] On Behalf Of glpk
xypron
 Sent: Tuesday, February 01, 2011 2:49 PM
 To: Aniket Karmarkar; help-glpk@gnu.org
 Subject: Re: [Help-glpk] execute concorde through cygwin
command line

 Hello Aniket,

 this list is not on Concorde but on GLPK.

 http://www.tsp.gatech.edu/concorde/DOC/concorde_prog.html
 teaches:
 A short user's guide for most of the programs can be obtained
 by running the selected program without specifying any
arguments
 (so, for example, entering concorde).

 For help on Concorde refer to the address given at
 http://www.tsp.gatech.edu/concorde/contact/contact.htm

 Best regards

 Xypron

  Original-Nachricht 
  Datum: Tue, 1 Feb 2011 17:20:05 + (UTC)
  Von: Aniket Karmarkar karmarkarani...@gmail.com
  An: help-glpk@gnu.org
  Betreff: [Help-glpk] execute concorde through cygwin command
line

  I am trying to use concorde to find the shortest distance in
the
  traveling salesman problem. I have got the command line
interface
  cygwin but when i execute concorde.exe I do not which
options
  to specify so that I get the graph, the shortest tour and
the
  distance. Any suggestions? I want to do the testing for a
  maximum of 400 nodes.
 
 
 
 
 
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[Fwd: RE: [Help-glpk] execute concorde through cygwin command line]

[Andrew Makhorin]

 Forwarded Message 
From: Robert Fourer 4...@northwestern.edu
Reply-To: 4...@northwestern.edu
To: 'glpk xypron' xypron.g...@gmx.de, 'Aniket Karmarkar'
karmarkarani...@gmail.com, help-glpk@gnu.org
Subject: RE: [Help-glpk] execute concorde through cygwin command line
Date: Tue, 1 Feb 2011 15:17:27 -0600

Also you can run Concorde over the Internet by taking advantage of the NEOS 
Server:

   www.neos-server.org

Click on NEOS Solvers and look under Combinatorial Optimization and Integer 
Programming.  You specify an appropriate Concorde input file to be uploaded 
from your computer, and the optimal tour is displayed in your browser.  (There 
is also an API for making submissions from your own program.)

I mention this here because one can also run GLPK through NEOS, saving the time 
of installing it locally.  It is hosted for NEOS at the Univ of Wisconsin 
currently only with GAMS input, but if there's interest I think they could be 
persuaded to put up versions with input in MathProg and some low-level formats 
like MPS and LP.

Bob Fourer
4...@northwestern.edu


 -Original Message-
 From: help-glpk-bounces+4er=iems.northwestern@gnu.org [mailto:help-glpk-
 bounces+4er=iems.northwestern@gnu.org] On Behalf Of glpk xypron
 Sent: Tuesday, February 01, 2011 2:49 PM
 To: Aniket Karmarkar; help-glpk@gnu.org
 Subject: Re: [Help-glpk] execute concorde through cygwin command line
 
 Hello Aniket,
 
 this list is not on Concorde but on GLPK.
 
 http://www.tsp.gatech.edu/concorde/DOC/concorde_prog.html
 teaches:
 A short user's guide for most of the programs can be obtained
 by running the selected program without specifying any arguments
 (so, for example, entering concorde).
 
 For help on Concorde refer to the address given at
 http://www.tsp.gatech.edu/concorde/contact/contact.htm
 
 Best regards
 
 Xypron
 
  Original-Nachricht 
  Datum: Tue, 1 Feb 2011 17:20:05 + (UTC)
  Von: Aniket Karmarkar karmarkarani...@gmail.com
  An: help-glpk@gnu.org
  Betreff: [Help-glpk] execute concorde through cygwin command line
 
  I am trying to use concorde to find the shortest distance in the
  traveling salesman problem. I have got the command line interface
  cygwin but when i execute concorde.exe I do not which options
  to specify so that I get the graph, the shortest tour and the
  distance. Any suggestions? I want to do the testing for a
  maximum of 400 nodes.
 
 
 
 
 
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Re: [Fwd: Re: [Help-glpk] ANNOUNCEMENT: OptimJ solver link for GLPK/Java]

[Nigel Galloway]

OptimJ does not link to glpk. To use glpk you download an examples set which 
includes a directory 'OptimJ samples - GLPK Binaries' which contains a compiled 
glpk 4.36 dll and a java jar file. The source to produce the java jar file is 
included in 'OptimJ 1.3.10 samples - GLPK\OptimJ samples - GLPK 
Binaries\src\com\ateji\optimj\glpkliba\LibraryLoader.java'. All the code and 
information to upgrade to glpk 4.45 is openly available.

A better implementation would be if OptimJ provided an 'abstract java 
interface' which worked with any complient implementation, which could include 
glpk-java (using swig) or iajaar (not using swig) or their example (not using 
swig).

 - Original Message -
 From: Xypron xypron.g...@gmx.de
 To: chtimax maxcach...@gmail.com
 Cc: help-glpk@gnu.org
 Subject: Re: [Fwd: Re: [Help-glpk] ANNOUNCEMENT: OptimJ solver link for   
 GLPK/Java]
 Date: Wed, 19 Jan 2011 19:56:05 +0100
 
 
 Hello Max,
 
 what is the license status of the generated code? Can it be 
 published under GPL or does it contain nonfree code or link to some 
 nonfree library?
 
 Dynamically binding non-free code to GPL code is not allowable 
 under the GPL license. It would only be possible if the copyright 
 holder chose to change the GLPK license. E.g. by adding the 
 classpath extension 
 (http://www.gnu.org/software/classpath/license.html) or by changing 
 the license to LGPL.
 
 Best regards
 
 Xypron
 
 
 Andrew Makhorin wrote:
   Forwarded Message 
  From: chtimaxmaxcach...@gmail.com
  To:Help-glpk@gnu.org
  Subject: Re: [Help-glpk] ANNOUNCEMENT: OptimJ solver link for GLPK/Java
  Date: Wed, 19 Jan 2011 05:48:23 -0800 (PST)
 
  Hello Robie and All,
 
  Accept my apologies for the confusion in my previous message as I am not
  familiar with the terminology of free software. OptimJ is free in the
  monetary sense (no money changes hands) but not free in the sense of the
  FSF.
 
  Allow me to precise that OptimJ is a source-to-source generator (it takes
  high-level modeling code and generates Java source code) that does not link
  to any optimization library including glpk.
 
  Max
 
 
 
 
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Re: [Fwd: Re: [Help-glpk] ANNOUNCEMENT: OptimJ solver link for GLPK/Java]

[Michael Hennebry]

On Wed, 19 Jan 2011, Andrew Makhorin wrote:


 Forwarded Message 
From: chtimax maxcach...@gmail.com
To: Help-glpk@gnu.org
Subject: Re: [Help-glpk] ANNOUNCEMENT: OptimJ solver link for GLPK/Java
Date: Wed, 19 Jan 2011 05:48:23 -0800 (PST)

Hello Robie and All,

Accept my apologies for the confusion in my previous message as I am not
familiar with the terminology of free software. OptimJ is free in the
monetary sense (no money changes hands) but not free in the sense of the
FSF.

Allow me to precise that OptimJ is a source-to-source generator (it takes
high-level modeling code and generates Java source code) that does not link


In this case, IIRC, the source code as defined by the GPL
would not be the java, it would be the input to OptimJ.


to any optimization library including glpk.

Max


--
Michael   henne...@web.cs.ndsu.nodak.edu
Pessimist: The glass is half empty.
Optimist:   The glass is half full.
Engineer:   The glass is twice as big as it needs to be.

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[Fwd: Re: [Help-glpk] ANNOUNCEMENT: OptimJ solver link for GLPK/Java]

[Andrew Makhorin]

 Forwarded Message 
From: chtimax maxcach...@gmail.com
To: Help-glpk@gnu.org
Subject: Re: [Help-glpk] ANNOUNCEMENT: OptimJ solver link for GLPK/Java
Date: Wed, 19 Jan 2011 05:48:23 -0800 (PST)

Hello Robie and All,

Accept my apologies for the confusion in my previous message as I am not
familiar with the terminology of free software. OptimJ is free in the
monetary sense (no money changes hands) but not free in the sense of the
FSF. 

Allow me to precise that OptimJ is a source-to-source generator (it takes
high-level modeling code and generates Java source code) that does not link
to any optimization library including glpk.

Max



Robbie Morrison wrote:
 
 
 Hello GLPK list
 
 I just applied to Ateji, via their website, for a copy
 of their free 'OptimJ' version.  They kindly send me
 what is probably a Microsoft Windows security key,
 judging by the file extension, its binary contents, and
 their description, plus instructions for downloading
 the main archive.
 
 I think the Ateji team is being a little disingenuous
 on this one -- see the forwarded message immediately
 below.  As far as I can tell, the free 'OptimJ' version
 is only free in the sense that no money changes hands
 -- it is not free in the Free Software Foundation
 sense:
 
   http://en.wikipedia.org/wiki/Free_Software_Definition
 
 I am not suggesting that Ateji is breaking the GNU
 GPLv3 through this process -- although I have no
 special knowledge in this regard.
 
 But it would help if Atieji could word their
 communications with a little more precision -- in
 particular, their response to Larry D'Agostino's
 inquiry, in my view, could be interpreted as
 misleading.
 
 best wishes
 Robbie
 
 
 To:  help-glpk@gnu.org
 Subject: [Fwd: RE: [Help-glpk] ANNOUNCEMENT: OptimJ solver link for
 Message-ID: 1295349022.3392.0.camel@none
 From:Andrew Makhorin m...@gnu.org
 Date:Tue, 18 Jan 2011 14:10:22 +0300
 

  Forwarded Message 
 From: chtimax maxcach...@gmail.com
 To: Help-glpk@gnu.org
 Subject: RE: [Help-glpk] ANNOUNCEMENT: OptimJ solver link for GLPK/Java
 Date: Tue, 18 Jan 2011 01:30:21 -0800 (PST)

 Coming back to Larry's question below, we have recently
 taken the decision to contribute OptimJ to the free
 software community. We are now offering a free OptimJ
 edition that includes our fully featured Java based
 modeling language for optimization along with lp_solve
 and GLPK solver links.

 More details on www.ateji.com/optimj

 Best Regards
 The Ateji team

 D'Agostino, Larry - TX wrote:

 Curious.  Why is OptimJ released under a commercial license?  It is
 based
 on Java, can be use as an Eclipse plug-in, and uses a number of free
 software or open source solvers.

 Is Optimj contributing back to the free software community?

 I don't mean to call you out on this just wondering why.

 Larry
 http://industrialengineertools.blogspot.com

 -Original Message-
 From: help-glpk-bounces+larry.d'agostino=gmacrescap@gnu.org
 [mailto:help-glpk-bounces+larry.d'agostino=gmacrescap@gnu.org] On
 Behalf Of Patrick Viry
 Sent: Thursday, April 02, 2009 8:52 AM
 To: help-glpk@gnu.org
 Subject: [Help-glpk] ANNOUNCEMENT: OptimJ solver link for GLPK/Java

 Dear all,

 It is our pleasure to announce the availability of an OptimJ solver
 link for GLPK.

 OptimJ is a new Java-based algebraic modeling language with powerful
 constructs for data modeling and bulk data processing. Models are
 expressed in a high-level mathematical notation and benefit from all
 Java libraries and development tools. They can be deployed directly
 within any Java-based IT environment.

 You'll find more information at http://www.ateji.com/optimj.html,
 including whitepapers and code samples. You can also browse the
 newsletter archive at http://www.ateji.com/newsletter.html for
 specific topics. Questions and comments are welcome in the user forums
 at http://forums.ateji.com/.

 The software can be downloaded for evaluation at
 http://www.ateji.com/downloads.html. Free licences are available for
 teachers and students.

 Regards,

 The Ateji team.
 ___
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 Help-glpk@gnu.org
 http://lists.gnu.org/mailman/listinfo/help-glpk
 ___
 Help-glpk mailing list
 Help-glpk@gnu.org
 http://lists.gnu.org/mailman/listinfo/help-glpk
 
 
 
 ___
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 Help-glpk@gnu.org
 http://lists.gnu.org/mailman/listinfo/help-glpk
 
 



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Re: [Fwd: Re: [Help-glpk] ANNOUNCEMENT: OptimJ solver link for GLPK/Java]

[Xypron]

Hello Max,

what is the license status of the generated code? Can it be published 
under GPL or does it contain nonfree code or link to some nonfree library?


Dynamically binding non-free code to GPL code is not allowable under the 
GPL license. It would only be possible if the copyright holder chose to 
change the GLPK license. E.g. by adding the classpath extension 
(http://www.gnu.org/software/classpath/license.html) or by changing the 
license to LGPL.


Best regards

Xypron


Andrew Makhorin wrote:

 Forwarded Message 
From: chtimaxmaxcach...@gmail.com
To:Help-glpk@gnu.org
Subject: Re: [Help-glpk] ANNOUNCEMENT: OptimJ solver link for GLPK/Java
Date: Wed, 19 Jan 2011 05:48:23 -0800 (PST)

Hello Robie and All,

Accept my apologies for the confusion in my previous message as I am not
familiar with the terminology of free software. OptimJ is free in the
monetary sense (no money changes hands) but not free in the sense of the
FSF.

Allow me to precise that OptimJ is a source-to-source generator (it takes
high-level modeling code and generates Java source code) that does not link
to any optimization library including glpk.

Max

   



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[Fwd: RE: [Help-glpk] ANNOUNCEMENT: OptimJ solver link for GLPK/Java]

[Andrew Makhorin]

 Forwarded Message 
From: chtimax maxcach...@gmail.com
To: Help-glpk@gnu.org
Subject: RE: [Help-glpk] ANNOUNCEMENT: OptimJ solver link for GLPK/Java
Date: Tue, 18 Jan 2011 01:30:21 -0800 (PST)

Coming back to Larry's question below, we have recently taken the decision to
contribute OptimJ to the free software community. We are now offering a free
OptimJ edition that includes our fully featured Java based modeling language
for optimization along with lp_solve and GLPK solver links.
More details on www.ateji.com/optimj

Best Regards
The Ateji team



D'Agostino, Larry - TX wrote:
 
 Curious.  Why is OptimJ released under a commercial license?  It is based
 on Java, can be use as an Eclipse plug-in, and uses a number of free
 software or open source solvers.  
 
 Is Optimj contributing back to the free software community?  
 
 I don't mean to call you out on this just wondering why.
 
 Larry
 http://industrialengineertools.blogspot.com
 
 -Original Message-
 From: help-glpk-bounces+larry.d'agostino=gmacrescap@gnu.org
 [mailto:help-glpk-bounces+larry.d'agostino=gmacrescap@gnu.org] On
 Behalf Of Patrick Viry
 Sent: Thursday, April 02, 2009 8:52 AM
 To: help-glpk@gnu.org
 Subject: [Help-glpk] ANNOUNCEMENT: OptimJ solver link for GLPK/Java
 
 Dear all,
 
 It is our pleasure to announce the availability of an OptimJ solver
 link for GLPK.
 
 OptimJ is a new Java-based algebraic modeling language with powerful
 constructs for data modeling and bulk data processing. Models are
 expressed in a high-level mathematical notation and benefit from all
 Java libraries and development tools. They can be deployed directly
 within any Java-based IT environment.
 
 You'll find more information at http://www.ateji.com/optimj.html,
 including whitepapers and code samples. You can also browse the
 newsletter archive at http://www.ateji.com/newsletter.html for
 specific topics. Questions and comments are welcome in the user forums
 at http://forums.ateji.com/.
 
 The software can be downloaded for evaluation at
 http://www.ateji.com/downloads.html. Free licences are available for
 teachers and students.
 
 Regards,
 
 The Ateji team.
 
 
 ___
 Help-glpk mailing list
 Help-glpk@gnu.org
 http://lists.gnu.org/mailman/listinfo/help-glpk
 
 
 ___
 Help-glpk mailing list
 Help-glpk@gnu.org
 http://lists.gnu.org/mailman/listinfo/help-glpk
 
 



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[Fwd: Re: [Help-glpk] reading Excel table into GLPK]

[Andrew Makhorin]

 Forwarded Message 
From: Christina Cignarale christinamcignar...@gmail.com
To: Noli Sicad nsi...@gmail.com
Cc: CHRISTINA CIGNARALE (RIT Student) cmc4...@rit.edu,
help-glpk@gnu.org
Subject: Re: [Help-glpk] reading Excel table into GLPK
Date: Thu, 9 Dec 2010 22:03:22 -0500

Hi,

Thank everyone for your input. I put the table statement into the model
file but, I am still getting an error. I was unsure how to define part
of the statement for my problem. I referenced the soduku example that is
posted. This is the model I am using

set NUTR;
set FOOD;

param cost {FOOD}  0;
param f_min {FOOD} = 0;
param f_max {j in FOOD} = f_min[j];

param n_min {NUTR} = 0;
param n_max {i in NUTR} = n_min[i];

param amt {NUTR,FOOD} = 0;

table f IN 'ODBC' 
'Driver={Microsoft Excel Driver (*.xls)};dbq=newdiet.xls'
'SELECT * FROM [Nutr$]'
NUTR - [NUTR],n_min,n_max;

var Buy {j in FOOD} = f_min[j], = f_max[j];

minimize Total_Cost:  sum {j in FOOD} cost[j] * Buy[j];

subject to Diet {i in NUTR}:
   n_min[i] = sum {j in FOOD} amt[i,j] * Buy[j] = n_max[i];


The highlited line is where I am getting the error. I know I do not have
a WHERE statement but I was unsure how to include that.

Thank you for your help,
Christina

On Mon, Dec 6, 2010 at 5:18 PM, Noli Sicad nsi...@gmail.com wrote:
Browse glpk-help archive [[1] about Excel and GLPK. It has 10
pages
about Excel and MathProg.

[1]

http://www.mail-archive.com/search?q=Excell=help-g...@gnu.orgo=relevancestart=0

Noli




On 12/7/10, glpk xypron xypron.g...@gmx.de wrote:
 Hello Christina,

 please, have a look at
 http://sourceforge.net/projects/winglpk/

 The distribution includes example files
 glpk-4.44/examples/sql/sudoku_excel.mod and
 glpk-4.44/examples/sql/sudoku_xls

 Please, read
 http://en.wikibooks.org/wiki/GLPK/ODBC#Microsoft_Excel

 Best regards

 Xypron




-- 
Christina Cignarale


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[Fwd: Re: [Help-glpk] reading Excel table into GLPK]

[Andrew Makhorin]

 Forwarded Message 
From: Christina Cignarale christinamcignar...@gmail.com
To: Noli Sicad nsi...@gmail.com
Cc: CHRISTINA CIGNARALE (RIT Student) cmc4...@rit.edu,
help-glpk@gnu.org
Subject: Re: [Help-glpk] reading Excel table into GLPK
Date: Fri, 10 Dec 2010 00:27:28 -0500

Hi Noli,

I am using Windows XP.  The Sodoku example did not work for me. The
error I got when I ran that was 
Reading ti ...
unable to open libiodbc.so
can't open the module

I'm using version 4.34 of GLPK. And the other parameters should be
contained on the other sheets in that workbook.Thank you so much for
your help. I am used to solving in AMPL and I do not have that much
computer knowledge so it makes it hard sometimes to understand the
instructions for GLPK.

Also, how would I post the complete log? The only way I know to copy a
command prompt is to use print screen. Is there an easier way?

-Christina

On Fri, Dec 10, 2010 at 12:07 AM, Noli Sicad nsi...@gmail.com wrote:
I think the error is pointing on ODBC

Context: {NUTR, FOOD} = 0; table f IN '...'...'...' NUTR -


in

param amt {NUTR,FOOD} = 0;

table f IN 'ODBC'


Have you run the Soduku excel example and got the right result?
 Are
you using Windows XP or 7?

BTW, where are the other parameters amt[i,j] and cost[1] tables
in the model?

Please post the complete log start with GLPSOL: GLPK LP/MIP
Solver,
v4.44 to the error

Example:

GLPSOL: GLPK LP/MIP Solver, v4.44
Parameter(s) specified in the command line:
 --cover --clique --gomory --mir -m
EstateModel_sqlite3_1_Otago2_25.mod
Reading model section from
EstateModel_sqlite3_1_Otago2_25.mod...
EstateModel_sqlite3_1_Otago2_25.mod:803: warning: unexpected end
of
file; missing end statement inserted
803 lines were read
Reading tab...
Connected to SQLite 3.6.22 - Otago_p.sqlite
SELECT * FROM tblSpecies
Display statement at line 203
SPECIES:
  '???'
  FIR
  OTH
  RAD
...

Noli


On 12/10/10, Christina Cignarale christinamcignar...@gmail.com
wrote:
 The error I am receiving is:
 diettable.mod 16:argument expression has invalid type

 Context: {NUTR, FOOD} = 0; table f IN '...'...'...' NUTR -

 I also attached the excel file I am trying to read from.

 On Thu, Dec 9, 2010 at 10:03 PM, Christina Cignarale 
 christinamcignar...@gmail.com wrote:

 Hi,

 Thank everyone for your input. I put the table statement into
the model
 file but, I am still getting an error. I was unsure how to
define part of
 the statement for my problem. I referenced the soduku example
that is
 posted. This is the model I am using

 set NUTR;
 set FOOD;

 param cost {FOOD}  0;
 param f_min {FOOD} = 0;
 param f_max {j in FOOD} = f_min[j];

 param n_min {NUTR} = 0;
 param n_max {i in NUTR} = n_min[i];

 param amt {NUTR,FOOD} = 0;

 table f IN 'ODBC'
 'Driver={Microsoft Excel Driver (*.xls)};dbq=newdiet.xls'
 'SELECT * FROM [Nutr$]'
 NUTR - [NUTR],n_min,n_max;

 var Buy {j in FOOD} = f_min[j], = f_max[j];

 minimize Total_Cost:  sum {j in FOOD} cost[j] * Buy[j];

 subject to Diet {i in NUTR}:
n_min[i] = sum {j in FOOD} amt[i,j] * Buy[j] = n_max[i];


 The highlited line is where I am getting the error. I know I
do not have a
 WHERE statement but I was unsure how to include that.


 Thank you for your help,
 Christina

 On Mon, Dec 6, 2010 at 5:18 PM, Noli Sicad nsi...@gmail.com
wrote:

 Browse glpk-help archive [[1] about Excel and GLPK. It has
10 pages
 about Excel and MathProg.

 [1]


http://www.mail-archive.com/search?q=Excell=help-g...@gnu.orgo=relevancestart=0

 Noli



 On 12/7/10, glpk xypron xypron.g...@gmx.de wrote:
  Hello Christina,
 
  please, have a look at
  http://sourceforge.net/projects/winglpk/
 
  The distribution includes example files
  glpk-4.44/examples/sql/sudoku_excel.mod and
  glpk-4.44/examples/sql/sudoku_xls
 
  Please, read
  http://en.wikibooks.org/wiki/GLPK/ODBC#Microsoft_Excel
 
  Best regards
 
  Xypron




 

Re: [Fwd: Re: [Help-glpk] reading Excel table into GLPK]

[glpk xypron]

Hello Christina,

 I am using Windows XP.
 unable to open libiodbc.so
looks like you are using a version of GLPK that was compiled with
Cytrix or MinGW (e.g. from gnuwin32.sourceforge.net/packages/glpk.htm).

Consider downloading GLPK for Windows from 
http://sourceforge.net/projects/winglpk/

Best regards

Xypron

  Forwarded Message 
 From: Christina Cignarale christinamcignar...@gmail.com
 Subject: Re: [Help-glpk] reading Excel table into GLPK
 Date: Fri, 10 Dec 2010 00:27:28 -0500
 
 Hi Noli,
 
 I am using Windows XP.  The Sodoku example did not work for me. The
 error I got when I ran that was 
 Reading ti ...
 unable to open libiodbc.so
 can't open the module
 
 I'm using version 4.34 of GLPK. And the other parameters should be
 contained on the other sheets in that workbook.Thank you so much for
 your help. I am used to solving in AMPL and I do not have that much
 computer knowledge so it makes it hard sometimes to understand the
 instructions for GLPK.
 
 Also, how would I post the complete log? The only way I know to copy a
 command prompt is to use print screen. Is there an easier way?
 
 -Christina
 
 On Fri, Dec 10, 2010 at 12:07 AM, Noli Sicad nsi...@gmail.com wrote:
 I think the error is pointing on ODBC
 
 Context: {NUTR, FOOD} = 0; table f IN '...'...'...' NUTR -
 
 
 in
 
 param amt {NUTR,FOOD} = 0;
 
 table f IN 'ODBC'
 
 
 Have you run the Soduku excel example and got the right result?
  Are
 you using Windows XP or 7?
 
 BTW, where are the other parameters amt[i,j] and cost[1] tables
 in the model?
 
 Please post the complete log start with GLPSOL: GLPK LP/MIP
 Solver,
 v4.44 to the error
 
 Example:
 
 GLPSOL: GLPK LP/MIP Solver, v4.44
 Parameter(s) specified in the command line:
  --cover --clique --gomory --mir -m
 EstateModel_sqlite3_1_Otago2_25.mod
 Reading model section from
 EstateModel_sqlite3_1_Otago2_25.mod...
 EstateModel_sqlite3_1_Otago2_25.mod:803: warning: unexpected end
 of
 file; missing end statement inserted
 803 lines were read
 Reading tab...
 Connected to SQLite 3.6.22 - Otago_p.sqlite
 SELECT * FROM tblSpecies
 Display statement at line 203
 SPECIES:
   '???'
   FIR
   OTH
   RAD
 ...
 
 Noli
 
 
 On 12/10/10, Christina Cignarale christinamcignar...@gmail.com
 wrote:
  The error I am receiving is:
  diettable.mod 16:argument expression has invalid type
 
  Context: {NUTR, FOOD} = 0; table f IN '...'...'...' NUTR -
 
  I also attached the excel file I am trying to read from.
 
  On Thu, Dec 9, 2010 at 10:03 PM, Christina Cignarale 
  christinamcignar...@gmail.com wrote:
 
  Hi,
 
  Thank everyone for your input. I put the table statement into
 the model
  file but, I am still getting an error. I was unsure how to
 define part of
  the statement for my problem. I referenced the soduku example
 that is
  posted. This is the model I am using
 
  set NUTR;
  set FOOD;
 
  param cost {FOOD}  0;
  param f_min {FOOD} = 0;
  param f_max {j in FOOD} = f_min[j];
 
  param n_min {NUTR} = 0;
  param n_max {i in NUTR} = n_min[i];
 
  param amt {NUTR,FOOD} = 0;
 
  table f IN 'ODBC'
  'Driver={Microsoft Excel Driver (*.xls)};dbq=newdiet.xls'
  'SELECT * FROM [Nutr$]'
  NUTR - [NUTR],n_min,n_max;
 
  var Buy {j in FOOD} = f_min[j], = f_max[j];
 
  minimize Total_Cost:  sum {j in FOOD} cost[j] * Buy[j];
 
  subject to Diet {i in NUTR}:
 n_min[i] = sum {j in FOOD} amt[i,j] * Buy[j] = n_max[i];
 
 
  The highlited line is where I am getting the error. I know I
 do not have a
  WHERE statement but I was unsure how to include that.
 
 
  Thank you for your help,
  Christina
 
  On Mon, Dec 6, 2010 at 5:18 PM, Noli Sicad nsi...@gmail.com
 wrote:
 
  Browse glpk-help archive [[1] about Excel and GLPK. It has
 10 pages
  about Excel and MathProg.
 
  [1]
 

 http://www.mail-archive.com/search?q=Excell=help-g...@gnu.orgo=relevancestart=0
 
  Noli
 
 
 
  On 12/7/10, glpk xypron xypron.g...@gmx.de wrote:
   Hello Christina,
  
   please, have a look at
   http://sourceforge.net/projects/winglpk/
  

Fwd: Re: [Help-glpk] Compiling for 64bit Windows with Visual Studio Express 2010

[Marc Goetschalckx]

I am using Visual Studio Professional, not the Express edition but I
believe they both require the following changes to the batch files.
After those changes, I was able to compile without any problems.

rem NOTE: Make sure that HOME variable specifies correct path where
Visual Studio is installed, so following line has to be adapted to your
computer
set HOME=C:\Program Files (x86)\Microsoft\Visual Studio 10.0\VC
rem this is the new batch file to set all paths to include files and
libraries, it requires identification of the target machine
call c:vcvarsall.bat x64
rem remainder has not been changed
copy config_VC config.h
c:nmake.exe /f Makefile_VC_DLL
c:nmake.exe /f Makefile_VC_DLL check

Marc

On 24-Sep-10 8:32 AM, Nigel Galloway wrote:

 Any Visual Studio edition will have a Terminal (Command Line) application. If 
you run the compile script from this application (or run this application with 
the script as a parameter) it will set the environment variables suitable for 
the sysytem, without the script calling vcvars or anything else.

 Would it not be more usual to use NMAKE for these things?



 - Original Message -
 From: glpk xypronxypron.g...@gmx.de
 To: Help Glpkhelp-glpk@gnu.org
 Subject: [Help-glpk] Compiling for 64bit Windows with Visual Studio Express
2010
 Date: Thu, 23 Sep 2010 21:19:03 +0200


 Using Visual Studio 2010 beta I was able to compile with
 the provided batch file Build_Glpk_with_VC10_DLL.bat.

 With Visual Studio Express 2010 and Windows SDK 7.1 installed
 the script fails due to missing batch file
 C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\bin\amd64\vcvars64.bat

 Replacing
 call %HOME%\vcvarsall.bat x64
 by
 CALL C:\Program Files\Microsoft SDKs\Windows\v7.1\Bin\SetEnv.cmd /x64
 solved the problem for me.

 I would be happy if other GLPK users could verify that this will
 work for them too.

 Best regards

 Xypron
 --
 GRATIS: Spider-Man 1-3 sowie 300 weitere Videos!
 Jetzt freischalten! http://portal.gmx.net/de/go/maxdome

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--
Marc Goetschalckx
Industrial and Systems Engineering
Georgia Institute of Technology, Atlanta, GA, USA



--
Marc Goetschalckx
Industrial and Systems Engineering
Georgia Institute of Technology, Atlanta, GA, USA


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Fwd: Re: [Help-glpk] Mathprog question

[glpk xypron]

Hello Andrew,

currently in GMPL there is no way to retrieve an element of a
symbolic set by a logical condition. In the example below
I am able to sort the values x{I}, but I am unable to 
output the indices sorted by the values.

One way to add such a functionality would be functions
Max{ domain } tuple
Min{ domain } tuple

Then I could write
param a, symbolic := Max{ i in I : x[i] = 3 } i;
to retrieve a special element of a set.

Or the following restricition could be removed:
implementation restriction; in/within setof{} not allowed.

Best regards

Xypron

 Original-Nachricht 
Datum: Sat, 12 Dec 2009 12:57:22 -0800 (PST)
Von: xypron
An: Help-glpk@gnu.org
Betreff: Re: [Help-glpk] Mathprog question


Hello Jeffrey,

see example below. Unfortunately sorted output requires O(n^3) time.

Best regards

Xypron

set I;
param a{I} := Uniform01();
var x{I};
s.t. c{i in I}:
  a[i] = x[i];
solve;
printf unsorted\n;
for{i in I}
  printf %10s: %f\n, i, x[i];
printf decreasing order\n;
for{i in (0..(card(I)-1))}
{
  printf %d: %f\n, i+1, sum{j in I : 
i == sum{ k in I : 
  x[j]x[k] || ( x[j]==x[k]  j  k )} 1 } x[j];
}
printf increasing order\n;
for{i in (0..(card(I)-1))}
{
  printf %d: %f\n, i+1, sum{j in I : 
i == sum{ k in I : 
  x[k]x[j] || ( x[k]==x[j]  k  j )} 1 } x[j];
}
data;
set I := ape bear crocodile elefant lion snake tiger zebra;
end;



Jeffrey Kantor wrote:
 
 Hi all --
 
 I'm struggling to come up with a way to print a list ordered by the value
 of
 a solved variable.  I have
 
 var start{TASKS};
 
 solve;
 
 and now I'd like to print the tasks ordered by the value of the start
 variables. Perhaps I'm just not thinking
 clearly, but is there a simple way to do this?
 
 Jeff

-- 
GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT!
Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01


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Re: Fwd: Re: [Help-glpk] Mathprog question

[Andrew Makhorin]

Hi Xypron,

 currently in GMPL there is no way to retrieve an element of a
 symbolic set by a logical condition. In the example below
 I am able to sort the values x{I}, but I am unable to 
 output the indices sorted by the values.

 One way to add such a functionality would be functions
 Max{ domain } tuple
 Min{ domain } tuple

 Then I could write
 param a, symbolic := Max{ i in I : x[i] = 3 } i;
 to retrieve a special element of a set.

Probably you mean something like argmax{(i,j,k) in IJK} x[i,j,k]
which should return some tuple (i,j,k), don't you?

The problem is that the glpk mathprog implementation is quite
naive. The translator performs evaluation of model objects exactly
in the same way as written. For example, the statement:

s.t. y{i in I} := sum{(i,j) in S: a[i,j] = 0} a[i,j] * x[j];

is evaluated as follows:

for i in I do
{  y[i] := 0;
   for (i,j) in S do
   {  if a[i,j] = 0 then
 y[i] := y[i] + a[i,j] * x[j];
   }
}

that needs to scan entire S in the innermost loop. If S is large
and sparse, it'd be much more efficient to evaluate as follows:

for i in I do
   y[i] := 0;
for (i,j) in S do
{  if a[i,j] = 0 then
  y[i] := y[i] + a[i,j] * x[j];
}

However, in the current implementation it is impossible to
optimize the bytecode by changing the order of operations, creating
some additional indices for indexed objects, etc.

 Or the following restricition could be removed:
 implementation restriction; in/within setof{} not allowed.

This would require evaluation of setof{} every time the condition
is checked. It is impossible to implement this efficiently.


Andrew Makhorin



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[Fwd: Re: [Help-glpk] Gusek : a GLPK IDE for Windows]

[Luiz M. M. Bettoni]

Hello again, Andrew. Hi All.

I need some opinions. Actually Gusek use the following associations with
common language actions:
- Compile = Check GMPL sintax (--check)
- Build = Generate Cplex LP from GMPL (--wcpxlp) - (build expanded
equations, like a CTRL+G on lingo)
- Go = Run GMPL Model
And MPS Build is another option, a not associated command.

What associations you (and maybe someone) point to make clear the use of
GMPL, MPS and CPLEX LP format?
I think in disable the build command and use Build Cplex LP not
associated, like Build MPS (or toggle build and compile and
disable compile command).

This associations are useful to preserve SciTE format (and SciTE users
can reuse only the Gusek configuration files to run GLPK models).

Other question: what  MPS format should Gusek associate to MPS files by
default (open and generate MPS files)? Free o Fixed MPS?

Thanks!!!
Luiz Bettoni

  3. I think that gusek should also support files in mps and,
  especially, in cplex lp formats, not only mathprog files.

 Ok, i'll do this. Actually you can run the mps and lp files, but the
 syntax lexer has some problems.
 Build a mps from a lp may be useful too, right?







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Fwd: Re: [Help-glpk] MySQL Support for GLPK 4.23

[Andrew Makhorin]

Hi Heinrich,

Thank you for your efforts.

I think the table feature is too sophisticated. Probably it is
reasonable to have it in AMPL, which is a more or less full-featured
programming language (unlike its earlier versions). However, I would
like to keep MathProg being a declarative, not procedural language.

So it seems to me that it would be sufficient to implement the
following two statements: read and write.

The read statement is the following:

   read s, p1, p2, ..., pn from data definition ;

where s is a set (may be omitted), p1, p2, ..., pn are parameters,
data definition defines a text file, select query, etc. It is
assumed that data for this statement is coded as a table:

   i11 i12 ... i1m v11 v12 ... v1n
   i21 i22 ... i2m v21 v22 ... v2n
   . . .

where (ik1, ik2, ..., ikm) is m-tuple, which being read is added to
set s and used as index for corresponding parameters, vk1, ..., vkn
are values of parameter members.

The write statement is similar to the printf statement:

   write {...} e1, e2, ..., en to data definition ;

where e1, e2, ..., en are expressions.

What do you think about this?


Best regards,

Andrew Makhorin



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