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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 The information provided may be out of date.

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Extract points from line graph?

Posted 2012年5月14日 GMT-4 03:27 Version 4.2a 3 Replies

Maria Pihl
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Hello everyone,


I am simulating flow (2D) in a straight, rectangular channel and to get a velocity profile I have made a vertical cut line in the channel. However, is it possible to get the exact data from certain points in this cut line? Say, 5, 10 and 15 cm from one of the channel edges, placed on the cut line I have made?

I know I can use the mouse to get points from the 2D surface, but I want the data in specific points.

Does anybody have any ideas?

Regards,

Maria
3 Replies Last Post 2012年5月14日 GMT-4 07:25
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 2012年5月14日 GMT-4 04:48
Hi

if you have the coordinates, its better to create a sub-set of your data set at these points, and export that (to a file or to a "table" and then via a plot or a Cut&Paste.

Do not forget to tweak the polynomial interpolation, if you are not already happy with the default

--
Good luck
Ivar
Hi if you have the coordinates, its better to create a sub-set of your data set at these points, and export that (to a file or to a "table" and then via a plot or a Cut&Paste. Do not forget to tweak the polynomial interpolation, if you are not already happy with the default -- Good luck Ivar
Maria Pihl
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Posted: 1 decade ago 2012年5月14日 GMT-4 06:41
Hello,

Thanks, that worked just fine!

How do I tweak the polynomial interpolation?

/Maria
Hello, Thanks, that worked just fine! How do I tweak the polynomial interpolation? /Maria
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 2012年5月14日 GMT-4 07:25
Hi

somwhere in the lower tabs of the Plot and/or extraction GUI window

--
Good luck
Ivar
Hi somwhere in the lower tabs of the Plot and/or extraction GUI window -- Good luck Ivar

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