why doesn't the 'getframe' work?

2011 12 19
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c_H=figure; H_axes=axes('parent', c_H); Z= hadamard(20); figure(c_H) % pause(1) pcolor(Z) pause(1) f = getframe(H_axes); figure,image(f.cdata)
I am confused,the last picture is nothing.But if I comment the figure(c_H),the code is right. I appreciate who can tell me why.

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Friedrich
Friedrich 2011-12-19

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Hi,
seems like an openGL issue. Changing the renderer to painters or zbuffer or opengl software works:
c_H=figure;
H_axes=axes('parent',c_H);
Z= hadamard(20);
figure(c_H)
pcolor(Z)
%set(c_H,'Renderer','painters') %or
%opengl software %or
set(c_H,'renderer','zbuffer')
pause(1)
f = getframe(H_axes);
figure,image(f.cdata)

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buaa
buaa 2011-12-19
thank you very much. It's done. But the 'painters' is so slow,I used 'zbuffer'.
thank you!

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