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Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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plotwhilesolving using java API

Posted 2012年7月6日 GMT-4 09:09 API, Simulation Apps, Modeling Tools & Definitions Version 4.2a 2 Replies

Alexander Warning
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I followed the end of the java guide for setting up a gui to run comsol. that worked perfectly. Then, I managed to do it for a time dependent study where it shows the progress bar and everything and then plots the final 2D plot group at the end.

Now, my question, is there a way to have it plot while solving in the GUI window? The guide gives a "PlotWhileSolving" command which I have tried and a few other things but I have not been able to figure it out. Can someone send me the lines of code I would need for the .java file and the .class file to have it show for example a 2D plot while solving?

My idea if this was not possible was have it run in a "for" loop for each output time and have it show the plots that way where the it used a stored solution.

Also, is there some special code needed to have comsol export an image file versus a .txt file? I can get comsol to export a .txt file but not the image file for some reason.

Thank you
Alex
2 Replies Last Post 2015年11月24日 GMT-5 16:25
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Hello Alexander Warning

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Josh Thomas Certified Consultant
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Posted: 1 decade ago 2013年2月28日 GMT-5 17:47
Alex,

Did you ever get the plot while solving to work?

I am newer to using the Java API, but I do have a solution to this (sort of). Follow these steps:

1) Add this line to your main method somewhere before any calls to solving:

model.study("std1").feature("time").set("plot", "on");

2) Add a JButton to the GUI that executes the following commands when clicked:

model.result("pg1").set("window", "window1");
model.result("pg1").run();

Note: This assumes you already have the plot group "pg1" set up to display in the GUI.

3) Now, as the simulation proceeds, anytime you click the JButton the plot group results will refresh and show the current results.

There may be a better way to do this. But, this has worked for me.

Hope that helps some and I would be interested if you have found a different way.

BTW - You seem to be a little more experienced using Java API and Eclipse. In Eclipse, would you be able to explain to me how to package a JAR file that is easily executed in Windows? I have only been able to run my API codes through Eclipse thus far.

Best regards,
Josh Thomas
Alex, Did you ever get the plot while solving to work? I am newer to using the Java API, but I do have a solution to this (sort of). Follow these steps: 1) Add this line to your main method somewhere before any calls to solving: model.study("std1").feature("time").set("plot", "on"); 2) Add a JButton to the GUI that executes the following commands when clicked: model.result("pg1").set("window", "window1"); model.result("pg1").run(); Note: This assumes you already have the plot group "pg1" set up to display in the GUI. 3) Now, as the simulation proceeds, anytime you click the JButton the plot group results will refresh and show the current results. There may be a better way to do this. But, this has worked for me. Hope that helps some and I would be interested if you have found a different way. BTW - You seem to be a little more experienced using Java API and Eclipse. In Eclipse, would you be able to explain to me how to package a JAR file that is easily executed in Windows? I have only been able to run my API codes through Eclipse thus far. Best regards, Josh Thomas
Michael Banucu
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Posted: 9 years ago 2015年11月24日 GMT-5 16:25
Hello Josh,

an answer to your question to export a jar file using Eclipse:
File->Export...->Java->JAR file
Follow the instructions and fill out the text boxes as you wish.

Greetings
Michael
Hello Josh, an answer to your question to export a jar file using Eclipse: File->Export...->Java->JAR file Follow the instructions and fill out the text boxes as you wish. Greetings Michael

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