Display NaNs values and apply alphadata for values different to NaNs

Hello,

I want to display the NaN values by setting an alphadata equal to 0 and at the same time apply an alphadata equal to 0.3 for values different to NaNs?

This is the code i use but it doesn't work:

    im=imagesc(I) 
    set(im,'AlphaData',0.3); 
    set(im,'AlphaData',~isnan(I))

Thanks,

Answer 1

[Ameer Hamza]

Try this

im = imagesc(I);
im.AlphaData = 0.3*ones(size(I));
im.AlphaData(isnan(I)) = 0;

[Haythem Zouabi]

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,