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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 The information provided may be out of date.

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Opening COMSOL 4.4 files on COMSOL 4.3b

Posted Aug 20, 2014, 12:23 p.m. EDT Version 4.3b, Version 4.4 3 Replies

Aakriti Jain
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Hello,

I am collaborating with a peer and they have their files on COMSOL version 4.4, but I only have the 4.3b version. Is there a way to open COMSOL 4.4 files on COMSOL 4.3b?

Thank you!
Aakriti
3 Replies Last Post Dec 15, 2014, 3:04 a.m. EST
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Hello Aakriti Jain

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.

Leonard Rossmann
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Posted: 9 years ago Dec 11, 2014, 9:52 a.m. EST
Hej hej,

I am having the same problem, is there a way to open these files?

Best regards
Leonard
Hej hej, I am having the same problem, is there a way to open these files? Best regards Leonard
Myungwu Woo
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Posted: 9 years ago Dec 12, 2014, 11:39 a.m. EST
Hi

There is a link you can get some help.

evgeni.org/oldfish/Top_nine_hints_for_working_with_Comsol

Be careful COMSOL API adheres to Java® 1.5.

www.comsol.com/blogs/automate-modeling-tasks-comsol-api-use-java/

Hope this helps.
Hi There is a link you can get some help. http://evgeni.org/oldfish/Top_nine_hints_for_working_with_Comsol Be careful COMSOL API adheres to Java® 1.5. http://www.comsol.com/blogs/automate-modeling-tasks-comsol-api-use-java/ Hope this helps.
Henrik Sönnerlind COMSOL Employee

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Posted: 9 years ago Dec 15, 2014, 3:04 a.m. EST
Hi,

Exporting from 4.4 and importing into 4.3b via a Java file as suggested above *might* work, but there are two assumptions:

1. The newer (4.4) model does not contain any functionality not available in older (4.3b) version of COMSOL.
2. The features used in the 4.4 version were not significantly improved between the two versions. When we do internal changes of a feature, this is not necessarily visible from 'the outside'. The Java representation may have changed though. This is however not so common, since we avoid changing the API unless it is necessary.

But even if the import fails due to either if these causes, it is often possible to edit the Java file and edit or remove the offending lines. You could then import almost all of the model into 4.3b and then adjust it manually.

Regards,
Henrik
Hi, Exporting from 4.4 and importing into 4.3b via a Java file as suggested above *might* work, but there are two assumptions: 1. The newer (4.4) model does not contain any functionality not available in older (4.3b) version of COMSOL. 2. The features used in the 4.4 version were not significantly improved between the two versions. When we do internal changes of a feature, this is not necessarily visible from 'the outside'. The Java representation may have changed though. This is however not so common, since we avoid changing the API unless it is necessary. But even if the import fails due to either if these causes, it is often possible to edit the Java file and edit or remove the offending lines. You could then import almost all of the model into 4.3b and then adjust it manually. Regards, Henrik

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