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Importing ASCII Geometry

Posted Mar 16, 2017, 7:34 a.m. EDT CAD Import & LiveLink™ Products for CAD, Geometry Version 5.2a 5 Replies

David Devoy
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I am completely new to Comsol so I really am struggling.

Can anybody explain how I can import some flat panel polygons I have defined as a series of x, y, z position vectors in ASCII into a Comsol file geometry.

I have used Matlab to create some CAD dfx files and tried doing an import. Everything looks like it is going fine then just get a "no geometry imported" error message. (See attached screenshot)

I also have Matlab LiveLink.

Any suggestions would be greatly appreciated,

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5 Replies Last Post Mar 24, 2017, 6:24 a.m. EDT
Ton Nguyen
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Posted: 8 years ago Mar 16, 2017, 9:06 p.m. EDT
Do you have the ECAD module? For some reason I can't import .dxf files either, but as a workaround I open them in KLayout (www.klayout.de/build.html) and save it as .gds which I can import into COMSOL.
Do you have the ECAD module? For some reason I can't import .dxf files either, but as a workaround I open them in KLayout (http://www.klayout.de/build.html) and save it as .gds which I can import into COMSOL.
David Devoy
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Posted: 8 years ago Mar 23, 2017, 5:36 a.m. EDT
Sadly I don't have any ECAD software, only Matlab. Thanks for your reply anyway.
Sadly I don't have any ECAD software, only Matlab. Thanks for your reply anyway.
Lorant Olasz COMSOL Employee

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Posted: 8 years ago Mar 23, 2017, 8:46 a.m. EDT
Hi David,

From the error message it seems that you have not selected the check box for importing Curves and points in the Settings window for the Import feature.

Another approach, which will not require a CAD format such as DXF, would be to export the point coordinates to a text file, and in the COMSOL Multiphysics model use the Polygon feature with the Data source set to File.

Best regards,
Lorant
Hi David, From the error message it seems that you have not selected the check box for importing Curves and points in the Settings window for the Import feature. Another approach, which will not require a CAD format such as DXF, would be to export the point coordinates to a text file, and in the COMSOL Multiphysics model use the Polygon feature with the Data source set to File. Best regards, Lorant
David Devoy
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Posted: 8 years ago Mar 23, 2017, 9:31 a.m. EDT
Thanks.
Thanks.
David Devoy
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Posted: 8 years ago Mar 24, 2017, 6:24 a.m. EDT
That seems to have done the trick, never would have spotted that without your help.
That seems to have done the trick, never would have spotted that without your help.

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