How to use the function triplot to plot an stl file in a specific axis inside App Designer?

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I want to display a geometry saved in a stl file inside a specific axis in App Designer. When I use the syntax 'triplot(TR)', it displays the geometry in a separate figure.
It is mentioned in the topic Display Graphics in App Designer, that "Some functions (such as imshow and triplot) use a name-value pair argument to specify the target object. For example, this code shows how to call the imshow function in App Designer."
However, I cannot find any relevant name-value pair for triplot. I have tried using the syntax 'triplot(TR,'Parent',app.UIAxes). It does not give any error, but nothing is displayed.
Any solution to this problem is appreciated.
Thanks,
Sreerup
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Answers (1)

Cris LaPierre
Cris LaPierre on 14 Jan 2021
Edited: Cris LaPierre on 14 Jan 2021
When plotting in app designer, you need to tell the plotting function what axes to plot into. Although the documentation for triplot and trisurf do not describe this name-value pair, it does work. In an app, you'd use something like app.UIAxes. Below is just a simple example to show the syntax.
ax = axes;
P = rand(10,2);
T = delaunayTriangulation(P);
triplot(T,'Parent',ax)
And for a surface
figure
a2=axes;
[x,y] = meshgrid(1:15,1:15);
z = peaks(15);
T = delaunay(x,y);
trisurf(T,x,y,z,'Parent',a2)

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