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PDETOOL - How to find the label of domain?

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Tadeu Fagundes
Tadeu Fagundes 2018-3-7
评论： Tadeu Fagundes 2018-3-8
I am having some problems in the pdetool toolbox (Using Matlab 2017a): My code defines the outer geometry of my system as the domain number 1 for a certain geometry:
However, for a second geometry (similar to the previous), the code labels the outer geometry as a different number (3 in this case).
I need to have different PDE coefficients in the outer domain. Is there a way to know which domain number is the outer rectangle of my system?

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Alan Weiss
Alan Weiss 2018-3-8
I don't know how to choose the label numbers in a geometry except by creating the geometry using a Geometry Function. See Geometry Function Example with Subdomains and a Hole.
Alan Weiss
MATLAB mathematical toolbox documentation
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Tadeu Fagundes
Tadeu Fagundes 2018-3-8
Thanks you Mr. Weiss! This was exactly what I needed. I went through the decomposed geometry file and found the labels I needed!

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