Re: [Scilab-users] Problems with To workspace and From workspace
Hi Michael,
When I run the simulation a second time, I still get the "Protected
variable name" and "Singularity in a block" (block _expression_)
errors.
The attached diagram does what I think you are trying to do (without
running the script).
That is, when the ramp block crosses zero, save the value of the
sine block in Scilab environment and plot it.
The CLKSOMV_f block is just there to give an initial impulse to
DOLLAR_f thanks to the added CLOCK_c block.
As Serge stated, the variables are "transferred" to the Scilab
environment at the end of the simulation, so there is no way of
saving a variable AND loading it mid-simulation in one diagram.
Hope this helps,
Regards,
Paul
On 04/14/2014 05:01 PM, Michael
Ungelehrt wrote:
Hello Paul,
thank
you for your answer.
I
had a look at the DOLLAR block. Its a kind of delay
block, but its not the right block for the task I have to
do, I think.
I
attached a simulation file, which shows the problem. This is
not the real simulation, because the real one is more
complex.
First
of all I load the .sce file. If I start the simulation, the
output shows the result with the initial value of C defined
in the .sce file and I get the error message Evaluation
problem: value not updated from context. Protected variable
name. Please choose another variable name.
After
I start the simulation a second time, the output graph shows
the correct result and the error message doesnt appear
again.
Is
there any possibility to write into my variable C at the
beginning of the simulation? Or is it possible to do this
task with the DOLLAR block like you thought?
Best
regards,
Michael
Von: Paul Bignier
[mailto:paul.bign...@scilab-enterprises.com]
Gesendet: Donnerstag, 10. April 2014 12:35
An: International users
mailing list for Scilab.; martin.buech...@th-deg.de
Betreff: Re: [Scilab-users] Problems with "To
workspace" and "From workspace"
Hi Michael,
Indeed it looks like you can't overwrite a variable defined in
the context.
Have you tried replacing the "FROMWSB" block with a "DOLLAR"
block?
Then it would have the same data and activation inputs as the
"TOWS_c" block,
and you would not need to pre-define 'C' (just give it an
initial value in the block parameters).
Hope this helps,
Regards,
Paul
On 04/10/2014 09:27 AM, Michael Ungelehrt
wrote:
Dear users,
I have a problem with
the To workspace respectively From workspace block in
Xcos.
Id like to write the
value of a function to workspace if the value of another
function changes its sign from + to -. A short time later
Id like to use this value in a third function and
retrieve it from workspace.
For that I evaluate
the first function with the NEGTOPOS_f block and give
the output event to the TOWS_c block. The TOWS_c block
is connected with the second function and should write the
value to a vaiable A in the workspace.
The FROMWSB block is
connected with a third function which should use the
variable that is saved before.
Now I have the
following problem:
If I start the
simulation, the FROMWSB says that the variable A does
not exist. So my idea was to define the variable in the
variable-browser before I start the simulation. If I do so
I get an error at the TOWS_c block: Evaluation problem:
value not updated from context. Protected variable name.
Please choose another variable name.
Is there any solution
for that problem?
Block parameters:
From workspace:
Variable
name: C
Interpolation Method:
0
Enable zero
crossing: 1
Output at
end: 1
T
Re: [Scilab-users] Problems with To workspace and From workspace
Hello Paul, thank you for your answer. I had a look at the DOLLAR block. Its a kind of delay block, but its not the right block for the task I have to do, I think. I attached a simulation file, which shows the problem. This is not the real simulation, because the real one is more complex. First of all I load the .sce file. If I start the simulation, the output shows the result with the initial value of C defined in the .sce file and I get the error message Evaluation problem: value not updated from context. Protected variable name. Please choose another variable name. After I start the simulation a second time, the output graph shows the correct result and the error message doesnt appear again. Is there any possibility to write into my variable C at the beginning of the simulation? Or is it possible to do this task with the DOLLAR block like you thought? Best regards, Michael Von: Paul Bignier [mailto:paul.bign...@scilab-enterprises.com] Gesendet: Donnerstag, 10. April 2014 12:35 An: International users mailing list for Scilab.; martin.buech...@th-deg.de Betreff: Re: [Scilab-users] Problems with To workspace and From workspace Hi Michael, Indeed it looks like you can't overwrite a variable defined in the context. Have you tried replacing the FROMWSB block with a DOLLAR block? Then it would have the same data and activation inputs as the TOWS_c block, and you would not need to pre-define 'C' (just give it an initial value in the block parameters). Hope this helps, Regards, Paul On 04/10/2014 09:27 AM, Michael Ungelehrt wrote: Dear users, I have a problem with the To workspace respectively From workspace block in Xcos. Id like to write the value of a function to workspace if the value of another function changes its sign from + to -. A short time later Id like to use this value in a third function and retrieve it from workspace. For that I evaluate the first function with the NEGTOPOS_f block and give the output event to the TOWS_c block. The TOWS_c block is connected with the second function and should write the value to a vaiable A in the workspace. The FROMWSB block is connected with a third function which should use the variable that is saved before. Now I have the following problem: If I start the simulation, the FROMWSB says that the variable A does not exist. So my idea was to define the variable in the variable-browser before I start the simulation. If I do so I get an error at the TOWS_c block: Evaluation problem: value not updated from context. Protected variable name. Please choose another variable name. Is there any solution for that problem? Block parameters: From workspace: Variable name:C Interpolation Method: 0 Enable zero crossing: 1 Output at end: 1 To workspace: Size of buffer: 1 Scilab variable name: C Inherit:0 Definition of variable C in SciNotes upfront: C.time=0; C.values=0; Thank you in advance! Mit freundlichen Grüßen Best regards, Michael Ungelehrt Logo_TC_Cham Michael Ungelehrt, B.Eng. Laboringenieur THD Technische Hochschule Deggendorf Technologie Campus Cham Badstraße 21 D-93413 Cham Tel: +49 9971 99673-29 Fax: +49 9971 99673-69 E-Mail: michael.ungele...@th-deg.de Web: www.tc-cham.th-deg.de http://www.tc-cham.th-deg.de/ ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users -- Paul BIGNIER Development engineer --- Scilab Enterprises 143bis rue Yves Le Coz - 78000 Versailles, France Phone: +33.1.80.77.04.69 http://www.scilab-enterprises.com image001.jpg To-From Workspace.sce Description: Binary data To-From Workspace_new.zcos Description: Binary data ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
[Scilab-users] Problems with To workspace and From workspace
Dear users, I have a problem with the To workspace respectively From workspace block in Xcos. Id like to write the value of a function to workspace if the value of another function changes its sign from + to -. A short time later Id like to use this value in a third function and retrieve it from workspace. For that I evaluate the first function with the NEGTOPOS_f block and give the output event to the TOWS_c block. The TOWS_c block is connected with the second function and should write the value to a vaiable A in the workspace. The FROMWSB block is connected with a third function which should use the variable that is saved before. Now I have the following problem: If I start the simulation, the FROMWSB says that the variable A does not exist. So my idea was to define the variable in the variable-browser before I start the simulation. If I do so I get an error at the TOWS_c block: Evaluation problem: value not updated from context. Protected variable name. Please choose another variable name. Is there any solution for that problem? Block parameters: From workspace: Variable name:C Interpolation Method: 0 Enable zero crossing: 1 Output at end: 1 To workspace: Size of buffer: 1 Scilab variable name: C Inherit:0 Definition of variable C in SciNotes upfront: C.time=0; C.values=0; Thank you in advance! Mit freundlichen Grüßen Best regards, Michael Ungelehrt Logo_TC_Cham Michael Ungelehrt, B.Eng. Laboringenieur THD Technische Hochschule Deggendorf Technologie Campus Cham Badstraße 21 D-93413 Cham Tel: +49 9971 99673-29 Fax: +49 9971 99673-69 E-Mail: michael.ungele...@th-deg.de Web: www.tc-cham.th-deg.de http://www.tc-cham.th-deg.de/ image003.jpg___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
Re: [Scilab-users] Problems with To workspace and From workspace
Hi Michael, Indeed it looks like you can't overwrite a variable defined in the context. Have you tried replacing the "FROMWSB" block with a "DOLLAR" block? Then it would have the same data and activation inputs as the "TOWS_c" block, and you would not need to pre-define 'C' (just give it an initial value in the block parameters). Hope this helps, Regards, Paul On 04/10/2014 09:27 AM, Michael Ungelehrt wrote: Dear users, I have a problem with the To workspace respectively From workspace block in Xcos. Id like to write the value of a function to workspace if the value of another function changes its sign from + to -. A short time later Id like to use this value in a third function and retrieve it from workspace. For that I evaluate the first function with the NEGTOPOS_f block and give the output event to the TOWS_c block. The TOWS_c block is connected with the second function and should write the value to a vaiable A in the workspace. The FROMWSB block is connected with a third function which should use the variable that is saved before. Now I have the following problem: If I start the simulation, the FROMWSB says that the variable A does not exist. So my idea was to define the variable in the variable-browser before I start the simulation. If I do so I get an error at the TOWS_c block: Evaluation problem: value not updated from context. Protected variable name. Please choose another variable name. Is there any solution for that problem? Block parameters: From workspace: Variable name: C Interpolation Method: 0 Enable zero crossing: 1 Output at end: 1 To workspace: Size of buffer: 1 Scilab variable name: C Inherit: 0 Definition of variable C in SciNotes upfront: C.time=0; C.values=0; Thank you in advance! Mit freundlichen Gren Best regards, Michael Ungelehrt Michael Ungelehrt, B.Eng. Laboringenieur THD Technische Hochschule Deggendorf Technologie Campus Cham Badstrae 21 D-93413 Cham Tel: +49 9971 99673-29 Fax: +49 9971 99673-69 E-Mail: michael.ungele...@th-deg.de Web: www.tc-cham.th-deg.de ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users -- Paul BIGNIER Development engineer --- Scilab Enterprises 143bis rue Yves Le Coz - 78000 Versailles, France Phone: +33.1.80.77.04.69 http://www.scilab-enterprises.com ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
Re: [Scilab-users] Problems with To workspace and From workspace
The workspace variables are created in the Scilab environment at the end of the simulation You can probably use a DOLLAR block to do what you want Serge Le 10/04/2014 09:27, Michael Ungelehrt a crit: Dear users, I have a problem with the To workspace respectively From workspace block in Xcos. Id like to write the value of a function to workspace if the value of another function changes its sign from + to -. A short time later Id like to use this value in a third function and retrieve it from workspace. For that I evaluate the first function with the NEGTOPOS_f block and give the output event to the TOWS_c block. The TOWS_c block is connected with the second function and should write the value to a vaiable A in the workspace. The FROMWSB block is connected with a third function which should use the variable that is saved before. Now I have the following problem: If I start the simulation, the FROMWSB says that the variable A does not exist. So my idea was to define the variable in the variable-browser before I start the simulation. If I do so I get an error at the TOWS_c block: Evaluation problem: value not updated from context. Protected variable name. Please choose another variable name. Is there any solution for that problem? Block parameters: From workspace: Variable name: C Interpolation Method: 0 Enable zero crossing: 1 Output at end: 1 To workspace: Size of buffer: 1 Scilab variable name: C Inherit: 0 Definition of variable C in SciNotes upfront: C.time=0; C.values=0; Thank you in advance! Mit freundlichen Gren Best regards, Michael Ungelehrt Michael Ungelehrt, B.Eng. Laboringenieur THD Technische Hochschule Deggendorf Technologie Campus Cham Badstrae 21 D-93413 Cham Tel: +49 9971 99673-29 Fax: +49 9971 99673-69 E-Mail: michael.ungele...@th-deg.de Web: www.tc-cham.th-deg.de ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
