resize and define the position of the colorbar

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Haythem Zouabi
Haythem Zouabi 2020-11-12
评论： Cris LaPierre 2020-11-12
Hello,
I need to resize and define the position of the colorbar.
This is my code:
ax3 = subplot(2,3,2);
ibg2 = imagesc(scene);
axis off
hold on
iim2 = imagesc(im,'XData',[16 466],'YData',[104 484]);
caxis([0 3])
iim2.AlphaData = 0.75*ones(size(im));
iim2.AlphaData(isnan(im)) = 0;
colorbar
colormap parula
caxis([0 3])
cb = colorbar;
set(cb,'position',[.10 .1 .1 .1])
This is the graph i get :
I need to place the color bar in the blue box (see figure)?
Thanks,

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采纳的回答

Cris LaPierre
Cris LaPierre 2020-11-12
Ran in:
Your position argument is relative to the entire figure, not the plot. Adjust it to be what you want it to be.
Also, including target axes might help.
scene = imread('peppers.png');
im = imread("cameraman.tif");
ax3 = subplot(2,3,2);
ibg2 = imagesc(scene);
axis off
hold on
iim2 = imagesc(ax3,im,'XData',[16 466],'YData',[104 484]);
hold off
iim2.AlphaData = 0.75*ones(size(im));
iim2.AlphaData(isnan(im)) = 0;
colormap parula
caxis([0 3])
cb = colorbar(ax3);
cb.Position = [.45 .6 .05 .1];
  2 个评论
Haythem Zouabi
Haythem Zouabi 2020-11-12
Is there any way to automatise the position of the colorbar with different images placed at different position?
Note that i always need to place the colorbar at the bottom-left corner of a given image.
Thanks,
Cris LaPierre
Cris LaPierre 2020-11-12
Ran in:
I had some success with the 'Location' setting.
scene = imread('peppers.png');
im = imread("cameraman.tif");
subplot(2,3,2);
imagesc(scene);
axis off
cb = colorbar('west');
cb.Position = cb.Position .* [1 1 1 .5];
subplot(2,3,4);
imagesc(im);
axis off
cb = colorbar('west');
cb.Position = cb.Position .* [1 1 1 .5];

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