How do I set back color of figure by pcolor to white?
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I try to use set(h,'defaultfigurecolor','white'), but it can't set the background color of figure by pcolor to white.
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Image Analyst
2020-2-2
I'm curious as to your reasons for using pcolor() rather than image, imagesc() or imshow()? What are they?
J. Alex Lee
2020-2-3
pcolor naturally treats NaN as missing, which might be what OP needs considering the discussion about background color. Drawback is that you can't set linestyle in-line, but you could argue the pcolor way is simpler:
% C is an image with NaN's meant to be transparent
h1 = pcolor(C);
C.LineStyle = 'none';
% vs
AData = ones(size(C));
AData(isnan(C)) = 0;
h2 = imagesc(C,'AlphaData',AData)
It's also a bit less obstrusive, e.g., doesn't alter existing axis limits
But to be honest, at the time I was interested in pcolor, I completely forgot about the AlphaData property of the image functions.
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