Overlaying a power distribution plot over an image

2017 4 13
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更新时间：2017 4 14
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I am trying to overlay a power distribution plot over an image with axis labels similar to what is shown here, but not successful. I would greatly appreciate help. Thanks in advance.
img = imagesc('image.jpg');
imagesc([min_x max_x], [min_y max_y], img);
hold on;
mesh(angle,distance,power);

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Walter Roberson
Walter Roberson 2017-4-13

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In your first line use imread rather than imagesc

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Usman Tahir Virk
Usman Tahir Virk 2017-4-13
Thanks for the quick help, Walter. I really appreciate it. One more thing. How do I get some transparency in my plot so that I can still see some of the background, similar to the example I posted. Thanks a lot.
Walter Roberson
Walter Roberson 2017-4-14
opaqueness = 0.7; %for example
imagesc([min_x max_x], [min_y max_y], img, 'Alphadata', opaqueness);
You can also use an array for Alphadata in order to assign a different transparency to each point. That is probably something you should consider doing, using 0 for the alpha value outside of your blobs so that the background shows through completely there.
Walter Roberson
Walter Roberson 2017-4-14
I just realized you might be wanting the mesh plot to be the transparent part. If so then you should look at the various Alpha related properties at https://www.mathworks.com/help/matlab/ref/chartsurface-properties.html -- there are several.
Usman Tahir Virk
Usman Tahir Virk 2017-4-14
Thanks for the nice tips, Walter. You're awesome. Best regards.

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