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Unknown function or operator

Posted Feb 15, 2013, 3:37 p.m. EST RF & Microwave Engineering Version 4.3 1 Reply

Ray
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I defined an integration operator intop2 under Model 1 --> Definitions. But when I try to plot the results under Results --> 1 D Plot Group 1 --> Global 4, it says "Unknown function or operator. -Name: intop2 -Plot: glob4 (global)."

What's wrong? Why can't I plot the integration vs frequency?

Thanks.
1 Reply Last Post Feb 17, 2013, 11:49 a.m. EST
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Feb 17, 2013, 11:49 a.m. EST
Hi

I see two possibilities (could be others too)
1) the calling if intop2() is wrong somehow, as the result will be a global variable, but you need to apply the intop onto a boundary/domain
2) you have defined the intop after you have solved the model, and you have not "updated" the solution, so that theintop variable is not defined in the "Data Set"

--
Good luck
Ivar
Hi I see two possibilities (could be others too) 1) the calling if intop2() is wrong somehow, as the result will be a global variable, but you need to apply the intop onto a boundary/domain 2) you have defined the intop after you have solved the model, and you have not "updated" the solution, so that theintop variable is not defined in the "Data Set" -- Good luck Ivar

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