Using impoly on a surface plot.

Question

Thorsten Becker 2016-10-6

评论： Thorsten Becker 2016-10-6

I would like to use Matlab's impoly (or any of the imroi functions) on a 3D surface. However, there seems to be a problem when calling createMask.

 [X,Y,Z] = peaks(101);
 surf(X,Y,Z);
 h = impoly(gca);
 mask = createMask(h);

Interesting is that this works.

pos = getPosition(h)

Any help would be much appreciated.

Answer 1

Massimo Zanetti 2016-10-6

After launching your code, click on the sufrace and impoly will work.

Thorsten Becker 2016-10-6

I don't follow.

This part of the example works fine:

[X,Y,Z] = peaks(101);
 surf(X,Y,Z);
 h = impoly(gca);

However, when I call

mask = createMask(h);

I get the following error: Error using imroi/parseInputsForCreateMask (line 103) createMask expects a current figure containing an image.

Is there a way around this?