anyway to color 2D triangular plot with "CData"

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Hi:

I have a 2D triangulation data including vertices and connectivity, I want to color it with the value at its geometry center. I tried to add a "CData" but it is not recognized by "triplot" function:

Tri=triplot(DT.ConnectivityList,DT.Points(:,1),DT.Points(:,2),'CData',cm);

where DT is the triangulation objective, and cm is the color at each triangle center.

is there anyway in Matlab can do this?

Thanks!

Yu

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Answer 1

KSSV 2020-12-13

编辑：KSSV 2020-12-13

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Read about trisurf. Also have a look on patch. You can use any of the two to achieve what you want.

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Yu Li 2020-12-13

在 MATLAB Online 中打开

Hi:

thanks for your reply.

"patch" seems works but by assigning "FaceVertexCData", but "trisurf" not.

I tried to use command:

Tri=trisurf(DT,DT.Points(:,1),DT.Points(:,2));

and below is the error messange:

Error using trisurf (line 65)
The triangulation must reside in 3D space.

do you have any further suggestions?

Thanks!

Yu

KSSV 2020-12-14

在 MATLAB Online 中打开

Tri=trisurf(DT.ConnectivityList,DT.Points(:,1),DT.Points(:,2),cm);

I am assuming that cm is a column array with same number of rows present in Dt.Points.

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anyway to color 2D triangular plot with "CData"

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