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Why is greyscale yellow and blue?

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Marcin Zyskowski
Marcin Zyskowski 2016-10-23
回答： Image Analyst 2016-10-23
I followed advice from this thread.
I got rid of the third dimension in the array, but now when I display grayscale picture using command:
image(Obrazek)
I get this:
Why is supposed grayscale picture yellow-blue, instead of gray?

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Image Analyst
Image Analyst 2016-10-23
It looks like a colormap is being applied without your knowledge. I'd use imshow() instead of image. Otherwise you can set the colormap to gray(256);
colormap(handleToAxes, gray(256));

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