Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
mphplot(model, 'pg1') command does not work
Posted 17.09.2015, 07:38 GMT-4 Interfacing Version 5.1 8 Replies
Please login with a confirmed email address before reporting spam
Hi,
I am very new user of COMSOL. I am using COMSOL 51. and COMSOL 5.1 with Matlab.
I have a comsol model in comsol GUI. It has a 2D plot with a tag <pg1>. I want to see the graph in matlab.
At first I opened Comsol with matlab. Then I wrote a code to import the comsol model. Everything works fine. But when I try to plot the graph by the command mphplot(model, 'pg1'), it shows error.
My code is like bellow
import com.comsol.model.*
import com.comsol.model.util.*
model=mphload('Rahman.mph'); %Rahman is the name of the model
info=mphsolinfo(model, 'solname', 'sol1');
tlist=info.solvals;
pd=mpheval(model, 'c'); % c is the dependent variable.
mphplot(model, 'pg1');
I would like to see the graph in matalb. But matlab is showing that there is an error in line mphplot.
Does anybody knoe how to use the mphplot command correctly?? Thanks in advance.
I am very new user of COMSOL. I am using COMSOL 51. and COMSOL 5.1 with Matlab.
I have a comsol model in comsol GUI. It has a 2D plot with a tag <pg1>. I want to see the graph in matlab.
At first I opened Comsol with matlab. Then I wrote a code to import the comsol model. Everything works fine. But when I try to plot the graph by the command mphplot(model, 'pg1'), it shows error.
My code is like bellow
import com.comsol.model.*
import com.comsol.model.util.*
model=mphload('Rahman.mph'); %Rahman is the name of the model
info=mphsolinfo(model, 'solname', 'sol1');
tlist=info.solvals;
pd=mpheval(model, 'c'); % c is the dependent variable.
mphplot(model, 'pg1');
I would like to see the graph in matalb. But matlab is showing that there is an error in line mphplot.
Does anybody knoe how to use the mphplot command correctly?? Thanks in advance.
8 Replies Last Post 07.10.2015, 07:55 GMT-4
Please login with a confirmed email address before reporting spam
Posted:
9 years ago
Your code looks correct. Matlab doesn't load the current model you are working with, only what is saved to the hard drive. Make sure you save your .mph file after you create your plot, then run mphload and mph plot.
If this isn't the issue, please copy and paste the details of your error so we can have a look.
Best of luck,
Alex Mertz
If this isn't the issue, please copy and paste the details of your error so we can have a look.
Best of luck,
Alex Mertz
Please login with a confirmed email address before reporting spam
Posted:
9 years ago
Thanks for your comment.
I have saved the mph file and then I wrote command in Matlab script. But it does not show the plot rather it shows error and a blank graph (Please see attachment: Matlab_figure). But the actual plot of comsol looks like the attachment 'Comsol_figure'.
The errors are given below:
Error using strcmp
Too many input arguments
Error in mphplot/1_getPT (line 485 )
Error in mphplot/geomedgeplot (line 289)
Error in mphplot (line 223)
I used only mphplot(model, 'pg1') command. I just want to render the plot to Matlab. Do you have any suggestion why I have this kind of errors ? Thanks in advance.
I have saved the mph file and then I wrote command in Matlab script. But it does not show the plot rather it shows error and a blank graph (Please see attachment: Matlab_figure). But the actual plot of comsol looks like the attachment 'Comsol_figure'.
The errors are given below:
Error using strcmp
Too many input arguments
Error in mphplot/1_getPT (line 485 )
Error in mphplot/geomedgeplot (line 289)
Error in mphplot (line 223)
I used only mphplot(model, 'pg1') command. I just want to render the plot to Matlab. Do you have any suggestion why I have this kind of errors ? Thanks in advance.
Attachments:
Please login with a confirmed email address before reporting spam
Posted:
9 years ago
Hi
This is a bug that has been fixed in our latest update, which you can get here:
www.comsol.com/product-update/5.1
--
Lars Gregersen
Comsol Denmark
This is a bug that has been fixed in our latest update, which you can get here:
www.comsol.com/product-update/5.1
Thanks for your comment.
I have saved the mph file and then I wrote command in Matlab script. But it does not show the plot rather it shows error and a blank graph (Please see attachment: Matlab_figure). But the actual plot of comsol looks like the attachment 'Comsol_figure'.
The errors are given below:
Error using strcmp
Too many input arguments
Error in mphplot/1_getPT (line 485 )
Error in mphplot/geomedgeplot (line 289)
Error in mphplot (line 223)
I used only mphplot(model, 'pg1') command. I just want to render the plot to Matlab. Do you have any suggestion why I have this kind of errors ? Thanks in advance.
--
Lars Gregersen
Comsol Denmark
Please login with a confirmed email address before reporting spam
Posted:
9 years ago
Hi
This is a bug that has been fixed in our latest update, which you can get here:
www.comsol.com/product-update/5.1
--
Lars Gregersen
Comsol Denmark
Hi Lars
i have the latest and greatest comsol version
#Version properties.
ver.build=234
ver.major=0
ver.name=COMSOL 5.1
but still i get a error when using mphplot
% create a 3D plot group
pg = model.result.create('pg','PlotGroup3D');
%create a surface plot
surf = pg.feature.create('surf', 'Surface');
surf.set('expr', 'T');
% display the plot group
mphplot(model , 'pg')
the error is the following:
Error using strcmp
Too many input arguments.
Error in mphplot/l_getPT (line 485)
Error in mphplot/geomedgeplot (line 289)
Error in mphplot (line 223)
Please login with a confirmed email address before reporting spam
Posted:
9 years ago
Hi
We have created a Knowledge Base entry with an attached mphplot.p file that should solve the problem. Let us know if you are still experiencing issues.
www.comsol.com/support/knowledgebase/1214/
--
Jesper Been
COMSOL Denmark
We have created a Knowledge Base entry with an attached mphplot.p file that should solve the problem. Let us know if you are still experiencing issues.
www.comsol.com/support/knowledgebase/1214/
--
Jesper Been
COMSOL Denmark
Please login with a confirmed email address before reporting spam
Posted:
9 years ago
Hi there,
I've replaced the .p file, but mphplot still doesn't work. It doesn't show error message any more, but no plot is displayed either.
I've replaced the .p file, but mphplot still doesn't work. It doesn't show error message any more, but no plot is displayed either.
Please login with a confirmed email address before reporting spam
Posted:
9 years ago
Hi there,
I've replaced the .p file, but mphplot still doesn't work. It doesn't show error message any more, but no plot is displayed either.
Hi,
There might be other issues with that plot then. I suggest you send a repeat model to support.
Please login with a confirmed email address before reporting spam
Posted:
9 years ago
Yes, it works after replacing the mphplot.p file as suggested! Finally....