Why do I get a black square when trying to print or export my image?

I get a black square when trying to print or export my image.

Using one of the examples, at the command line I type the following commands

P = peaks(40);

C = del2(P);

   surf(P,C)

colormap hot

Once the figure is plotted on the screen in the Figure Dialog, I go to

File->Save As->bmp (or File->Print). I save the file as test.bmp, but when I try to print it, I get a black square.

Answer 1

[MathWorks Support Team]

Sometimes the renderer needs to be forced (depending on the graphics card). You can save the figure from the command line:

print -dbmp -opengl figuregl

In addition there are two other renders:

print -dbmp -zbuffer figurez

print -dbmp -painters figurep

where 'figuregl', 'figurez' and 'figurep' will be .BMP filenames. They will be saved in your current working directory.

This can also be done from the figure user interface:

File -> Page Setup -> Axes and Figures tab -> Figure Renderer (choose from the list box) -> OK, and then Save.