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Postprocessing using '>'

Posted Sep 5, 2014, 12:54 a.m. EDT Results & Visualization Version 4.4 2 Replies

Tianhang Bai
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Hi all,

I have got a question about postprocessing when I am using '>'. For example, I want to show the von mises stress over a domain. The default expression is: fsi.mises, and I can see colour distribution over the domain. However, if I change the expression to fsi.mises>50[kPa], the legend shows 0 to 1. Could anybody tell me what does 0 to 1 mean?

Thanks for you help.


Albert
2 Replies Last Post Sep 5, 2014, 2:07 a.m. EDT
Gunnar Andersson COMSOL Employee

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Posted: 1 decade ago Sep 5, 2014, 1:58 a.m. EDT

I have got a question about postprocessing when I am using '>'. For example, I want to show the von mises stress over a domain. The default expression is: fsi.mises, and I can see colour distribution over the domain. However, if I change the expression to fsi.mises>50[kPa], the legend shows 0 to 1. Could anybody tell me what does 0 to 1 mean?


If you use the expression "fsi.mises>50[kPa]", then the plot will contain the result of evaluating the > operator. The result is 1 the inequality is satisfied and 0 where it isn't.

It sounds as if you maybe want to restrict the plot to the the part where the inequality is satisfied. You can do this by right-clicking on the plot in the Model Builder and adding a Filter node, where you enter your logical expression.
[QUOTE] I have got a question about postprocessing when I am using '>'. For example, I want to show the von mises stress over a domain. The default expression is: fsi.mises, and I can see colour distribution over the domain. However, if I change the expression to fsi.mises>50[kPa], the legend shows 0 to 1. Could anybody tell me what does 0 to 1 mean? [/QUOTE] If you use the expression "fsi.mises>50[kPa]", then the plot will contain the result of evaluating the > operator. The result is 1 the inequality is satisfied and 0 where it isn't. It sounds as if you maybe want to restrict the plot to the the part where the inequality is satisfied. You can do this by right-clicking on the plot in the Model Builder and adding a Filter node, where you enter your logical expression.
Tianhang Bai
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Posted: 1 decade ago Sep 5, 2014, 2:07 a.m. EDT
Hi Gunnar,

Thank you very much for your reply. I tried the filter as you recommended and it worked. Thanks again.


Albert
Hi Gunnar, Thank you very much for your reply. I tried the filter as you recommended and it worked. Thanks again. Albert

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