resize and define the position of the colorbar

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,

Answer 1

[Cris LaPierre]

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];

[Haythem Zouabi]

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]

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];