How can i use scatter with an image
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I have had either all the points plot correctly the colors distorted/scaled by the image they were plotted over, OR the scatter plot colors scaled correctly, but plotted incorrectly.
This produces Fig 1
figure, imshow(img, 'InitialMag',100, 'Border','tight'), hold on
scatter(mx, my, pointsize, TEC)
hold off
This gives Fig 2:
figure
ax = gca();
scatter(mx, my, pointsize, TEC)
freezeColors(ax);
hold(ax, 'on');
imz = imshow(img, 'InitialMag',100, 'Border','tight');
hold(ax, 'off')
uistack(imz, 'bottom')
2 个评论
KSSV
2017-5-24
There is a miss match with the scatter points data and image data....you must tell what you are expecting?
回答(1 个)
Walter Roberson
2017-5-24
Your (x, y) coordinates have both positive and negative y. However, by default images are assigned positive coordinates by row and column offsets.
You should use the imshow() XData and YData options to place the image within the x y coordinate space. You will probably need to look at the documentation of image() to understand XData and YData.
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