Re: Glpk and R
On Wed, 2023-03-15 at 13:02 +, Ma, Lingjie wrote: > Hi, Mr. Mao, > > I have some quantile regression type portfolio optimization programs > which needs to call glpk package in R. > > My question is how to call glpk with R? please see https://en.wikibooks.org/wiki/GLPK/R > > Thanks, > > Lingjie Ma > > >
Re: [Help-glpk] glpk and R (using SWIG)
Hello Nigel, I suggest you set up a project on www.sourceforge.net. There you have subversion for your code and you can easily make binary or source releases. Furthermore you get webspace for describing your project(s). If that is too much trouble, I can upload the file to the GLPK-Java site. Best regards Xypron. Original-Nachricht > Datum: Tue, 22 Jun 2010 14:55:40 +0100 > Betreff: Re: [Help-glpk] glpk and R (using SWIG) > > The bad news is I think these examples are lost to history. > > The good news I have some better ones. Do you think the new wiki is a good > place for them? Hopefully it will take better care of them than Yahoo did > the old ones. > > > - Original Message ----- > > Subject: Re: [Help-glpk] glpk and R (using SWIG) > > Date: Thu, 17 Jun 2010 22:17:04 +0200 > > > > > > Hello Nigel, > > > > the proposed iajaar.h looks promising. > > > > Unfortunately the referenced download site > > http://www.geocities.com/nigel_galloway/IAJAAR.zip > > no longer exists. > > > > Is there an alternative site? > > > > > Do you rely on Java's garbage collector to dispose of these or do > > > you call glpk's delete function (glp_delete_prob)? > > Glp_delete_prob() only deletes objecst created by GLPK. GLPK-Java > > relies on garbage collection for other objects like instances > > of SWIGTYPE_p_double. > > > > Best regards > > > > Xypron > > > > Original-Nachricht > > > Datum: Thu, 17 Jun 2010 15:56:56 +0100 > > > Betreff: Re: [Help-glpk] glpk and R (using SWIG) > > > > > > > > I assume you are creating objects in GLPK, like say a constraint > matrix. > > > Do you rely on Java's garbage collector to dispose of these or do you > call > > > glpk's delete function (glp_delete_prob)? I do the latter. I don't > recall > > > ever noticing R's garbage collector. > > > > > > So don't use carrays. I use iajaar or sparse matrix from coin. See: > > > http://www.mail-archive.com/help-glpk@gnu.org/msg02581.html > > > > > > I always think that writing ia[x] = etc; ja[x] = etc; ar[x] = etc; is > > > tedious. GLPK should have an add triplet function. Until then use > iajaar. > > > > > > > - Original Message - > > > > From: Xypron > > > > To: Nigel Galloway > > > > Cc: "Eagle, Ken" , help-glpk@gnu.org > > > > Subject: Re: [Help-glpk] glpk and R (using SWIG) > > > > Date: Wed, 16 Jun 2010 00:36:54 +0200 > > > > > > Hello Nigel, > > > > > the SWIG documentation on > > > > http://www.swig.org/Doc1.3/R.html > > > > says: > > > > > Currently the following features are not implemented or broken: > > > > * Garbage collection of created objects > > > > * C Array wrappings > > > > > Some sort of array wrapping is needed for using GLPK. > > > > > Best regards > > > > > Xypron > > > > > Nigel Galloway wrote: > > > > > The benefits (and drawbacks of SWIG) have been widely > > > discussed. > > Using the swig interface files discussed it is > > > possible to > > produce wrappers for all glpk api in R, and add a > > > few usful > > features. > > > > > -- GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT! Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01 ___ Help-glpk mailing list Help-glpk@gnu.org http://lists.gnu.org/mailman/listinfo/help-glpk
Re: [Help-glpk] glpk and R (using SWIG)
The bad news is I think these examples are lost to history. The good news I have some better ones. Do you think the new wiki is a good place for them? Hopefully it will take better care of them than Yahoo did the old ones. > - Original Message - > From: "glpk xypron" > To: "Nigel Galloway" > Cc: help-glpk@gnu.org, eag...@consolidated.net > Subject: Re: [Help-glpk] glpk and R (using SWIG) > Date: Thu, 17 Jun 2010 22:17:04 +0200 > > > Hello Nigel, > > the proposed iajaar.h looks promising. > > Unfortunately the referenced download site > http://www.geocities.com/nigel_galloway/IAJAAR.zip > no longer exists. > > Is there an alternative site? > > > Do you rely on Java's garbage collector to dispose of these or do > > you call glpk's delete function (glp_delete_prob)? > Glp_delete_prob() only deletes objecst created by GLPK. GLPK-Java > relies on garbage collection for other objects like instances > of SWIGTYPE_p_double. > > Best regards > > Xypron > > Original-Nachricht > > Datum: Thu, 17 Jun 2010 15:56:56 +0100 > > Betreff: Re: [Help-glpk] glpk and R (using SWIG) > > > > > I assume you are creating objects in GLPK, like say a constraint matrix. > > Do you rely on Java's garbage collector to dispose of these or do you call > > glpk's delete function (glp_delete_prob)? I do the latter. I don't recall > > ever noticing R's garbage collector. > > > > So don't use carrays. I use iajaar or sparse matrix from coin. See: > > http://www.mail-archive.com/help-glpk@gnu.org/msg02581.html > > > > I always think that writing ia[x] = etc; ja[x] = etc; ar[x] = etc; is > > tedious. GLPK should have an add triplet function. Until then use iajaar. > > > > > - Original Message - > > > From: Xypron > > > To: Nigel Galloway > > > Cc: "Eagle, Ken" , help-glpk@gnu.org > > > Subject: Re: [Help-glpk] glpk and R (using SWIG) > > > Date: Wed, 16 Jun 2010 00:36:54 +0200 > > > > > Hello Nigel, > > > > the SWIG documentation on > > > http://www.swig.org/Doc1.3/R.html > > > says: > > > > Currently the following features are not implemented or broken: > > > * Garbage collection of created objects > > > * C Array wrappings > > > > Some sort of array wrapping is needed for using GLPK. > > > > Best regards > > > > Xypron > > > > Nigel Galloway wrote: > > > > The benefits (and drawbacks of SWIG) have been widely > > discussed. > > Using the swig interface files discussed it is > > possible to > > produce wrappers for all glpk api in R, and add a > > few usful > > features. > > > > > > > > > > > > > > > -- ___ > > Surf the Web in a faster, safer and easier way: > > Download Opera 9 at http://www.opera.com > > -- > GMX DSL: Internet-, Telefon- und Handy-Flat ab 19,99 EUR/mtl. > Bis zu 150 EUR Startguthaben inklusive! http://portal.gmx.net/de/go/dsl > -- ___ Surf the Web in a faster, safer and easier way: Download Opera 9 at http://www.opera.com ___ Help-glpk mailing list Help-glpk@gnu.org http://lists.gnu.org/mailman/listinfo/help-glpk
Re: [Help-glpk] glpk and R (using SWIG)
Hello Nigel, the proposed iajaar.h looks promising. Unfortunately the referenced download site http://www.geocities.com/nigel_galloway/IAJAAR.zip no longer exists. Is there an alternative site? > Do you rely on Java's garbage collector to dispose of these or do > you call glpk's delete function (glp_delete_prob)? Glp_delete_prob() only deletes objecst created by GLPK. GLPK-Java relies on garbage collection for other objects like instances of SWIGTYPE_p_double. Best regards Xypron Original-Nachricht > Datum: Thu, 17 Jun 2010 15:56:56 +0100 > Betreff: Re: [Help-glpk] glpk and R (using SWIG) > > I assume you are creating objects in GLPK, like say a constraint matrix. > Do you rely on Java's garbage collector to dispose of these or do you call > glpk's delete function (glp_delete_prob)? I do the latter. I don't recall > ever noticing R's garbage collector. > > So don't use carrays. I use iajaar or sparse matrix from coin. See: > http://www.mail-archive.com/help-glpk@gnu.org/msg02581.html > > I always think that writing ia[x] = etc; ja[x] = etc; ar[x] = etc; is > tedious. GLPK should have an add triplet function. Until then use iajaar. > > > - Original Message - > > From: Xypron > > To: Nigel Galloway > > Cc: "Eagle, Ken" , help-glpk@gnu.org > > Subject: Re: [Help-glpk] glpk and R (using SWIG) > > Date: Wed, 16 Jun 2010 00:36:54 +0200 > > > > > > Hello Nigel, > > > > the SWIG documentation on > > http://www.swig.org/Doc1.3/R.html > > says: > > > > Currently the following features are not implemented or broken: > > * Garbage collection of created objects > > * C Array wrappings > > > > Some sort of array wrapping is needed for using GLPK. > > > > Best regards > > > > Xypron > > > > Nigel Galloway wrote: > > > The benefits (and drawbacks of SWIG) have been widely discussed. > > > Using the swig interface files discussed it is possible to > > > produce wrappers for all glpk api in R, and add a few usful > > > features. > > > > > > > > > -- > ___ > Surf the Web in a faster, safer and easier way: > Download Opera 9 at http://www.opera.com -- GMX DSL: Internet-, Telefon- und Handy-Flat ab 19,99 EUR/mtl. Bis zu 150 EUR Startguthaben inklusive! http://portal.gmx.net/de/go/dsl ___ Help-glpk mailing list Help-glpk@gnu.org http://lists.gnu.org/mailman/listinfo/help-glpk
Re: [Help-glpk] glpk and R (using SWIG)
I assume you are creating objects in GLPK, like say a constraint matrix. Do you rely on Java's garbage collector to dispose of these or do you call glpk's delete function (glp_delete_prob)? I do the latter. I don't recall ever noticing R's garbage collector. So don't use carrays. I use iajaar or sparse matrix from coin. See: http://www.mail-archive.com/help-glpk@gnu.org/msg02581.html I always think that writing ia[x] = etc; ja[x] = etc; ar[x] = etc; is tedious. GLPK should have an add triplet function. Until then use iajaar. > - Original Message - > From: Xypron > To: Nigel Galloway > Cc: "Eagle, Ken" , help-glpk@gnu.org > Subject: Re: [Help-glpk] glpk and R (using SWIG) > Date: Wed, 16 Jun 2010 00:36:54 +0200 > > > Hello Nigel, > > the SWIG documentation on > http://www.swig.org/Doc1.3/R.html > says: > > Currently the following features are not implemented or broken: > * Garbage collection of created objects > * C Array wrappings > > Some sort of array wrapping is needed for using GLPK. > > Best regards > > Xypron > > Nigel Galloway wrote: > > The benefits (and drawbacks of SWIG) have been widely discussed. > > Using the swig interface files discussed it is possible to > > produce wrappers for all glpk api in R, and add a few usful > > features. > > > -- ___ Surf the Web in a faster, safer and easier way: Download Opera 9 at http://www.opera.com ___ Help-glpk mailing list Help-glpk@gnu.org http://lists.gnu.org/mailman/listinfo/help-glpk
Re: [Help-glpk] glpk and R (using SWIG)
Hello Nigel, the SWIG documentation on http://www.swig.org/Doc1.3/R.html says: Currently the following features are not implemented or broken: * Garbage collection of created objects * C Array wrappings Some sort of array wrapping is needed for using GLPK. Best regards Xypron Nigel Galloway wrote: The benefits (and drawbacks of SWIG) have been widely discussed. Using the swig interface files discussed it is possible to produce wrappers for all glpk api in R, and add a few usful features. ___ Help-glpk mailing list Help-glpk@gnu.org http://lists.gnu.org/mailman/listinfo/help-glpk
Re: [Help-glpk] glpk and R (using SWIG)
The benefits (and drawbacks of SWIG) have been widely discussed. Using the swig interface files discussed it is possible to produce wrappers for all glpk api in R, and add a few usful features. > - Original Message - > From: "Eagle, Ken" > To: "glpk xypron" , help-glpk@gnu.org > Subject: Re: [Help-glpk] glpk and R > Date: Tue, 18 May 2010 23:30:03 -0400 (EDT) > > > Hi Xypron. I don't think Rglpk accesses the broad glpk API; it can > simply read > problem description files and pass the specified problem to the glpk solver. > > Ken > > ___ > Help-glpk mailing list > Help-glpk@gnu.org > http://lists.gnu.org/mailman/listinfo/help-glpk > -- ___ Surf the Web in a faster, safer and easier way: Download Opera 9 at http://www.opera.com ___ Help-glpk mailing list Help-glpk@gnu.org http://lists.gnu.org/mailman/listinfo/help-glpk
Re: [Help-glpk] glpk and R
Hi Xypron. I don't think Rglpk accesses the broad glpk API; it can simply read problem description files and pass the specified problem to the glpk solver. Ken ___ Help-glpk mailing list Help-glpk@gnu.org http://lists.gnu.org/mailman/listinfo/help-glpk
Re: [Help-glpk] glpk and R
Hello Ken, have a look at ftp://cran.r-project.org/pub/R/contrib/main/Rglpk_0.3-5.tar.gz The changelog says UPDATED: Rglpk now includes GLPK version 4.42 Best regards Xypron Original-Nachricht > Datum: Tue, 18 May 2010 10:00:08 -0500 > Betreff: [Help-glpk] glpk and R > I have been working with glpk accessed from R. Originally I was > using the “glpk” R package in order to use the various API routines, > but eventually realized that this port is of glpk version 4.8 from > 2006. To support my own work, I have updated the port to hook up > with version 4.43. > > I have developed the interface routines to support roughly half of > the glpk API, and expect that I can extend this to cover the full API > without too much additional effort. I would be happy to release the > suite as a new R package. My questions for this forum are; > > : Are you aware of anyone else doing this (no need for two updates; > note that the developers of the prior R package apparently are not > working on an update)? > > : Is there a sense that there is some customer demand for this product? > > Regards, > Ken Eagle > ___ > Help-glpk mailing list > Help-glpk@gnu.org > http://lists.gnu.org/mailman/listinfo/help-glpk -- GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT! Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01 ___ Help-glpk mailing list Help-glpk@gnu.org http://lists.gnu.org/mailman/listinfo/help-glpk
[Help-glpk] glpk and R
I have been working with glpk accessed from R. Originally I was using the “glpk” R package in order to use the various API routines, but eventually realized that this port is of glpk version 4.8 from 2006. To support my own work, I have updated the port to hook up with version 4.43. I have developed the interface routines to support roughly half of the glpk API, and expect that I can extend this to cover the full API without too much additional effort. I would be happy to release the suite as a new R package. My questions for this forum are; : Are you aware of anyone else doing this (no need for two updates; note that the developers of the prior R package apparently are not working on an update)? : Is there a sense that there is some customer demand for this product? Regards, Ken Eagle ___ Help-glpk mailing list Help-glpk@gnu.org http://lists.gnu.org/mailman/listinfo/help-glpk
