Modify colorbar in .fig file

Hello,

Is there anyway to rescale the colors in a figure and hence the colorbar?

eg. Right now colorbar is 0.1 to 0.5 BUT I want the colors in the figure rescaled to 0.1 to 0.7.

Is there anyway to do this without replotting the figure?

Thank you, S

Answer 1

[Tom]

Try: caxis([0.1 0.7])

[Sean de Wolski]

+1, You're right, this is probably more what sas0701 is looking for.

Answer 2

[Sean de Wolski]

figure;
imagesc(magic(20));
h = colorbar;
pause %pause so you can see the change on the next line
set(h,'ylim',[30 60]);

Like this?

Answer 3

[sas0701]

Hi, Do I have to something special in terms of loading the figure (just opening it up and typing caxis does not work)?

Thanks, S

[Tom]

I tried it by opening a saved figure which had a color bar on, and it worked for me. But maybe you could try what Sean wrote, though you'll have to find the handle of the color bar yourself:

someone smarter than me might know a quicker way, but to get started you can do H=get(gcf,'children'), and find which one of those has the tag 'Colorbar'

[Sean de Wolski]

h = findobj('tag','Colorbar')

Answer 4

[sas0701]

Hi,

I tried both ways.I first open up a saved .fig file

1)caxis does not change anything 2)set(h...) changes colorbar limits but does not rescale figure colors..

Help!

[Tom]

What do you mean by rescaling - relative to what? Do you want new colors? A picture of the figure might be useful

[sas0701]

Hi, Is there a way to attach a file here?

[Sean de Wolski]

Post the image to a free webhosting site and then use the << url>> tag to poast it in your question. Edit your original question to include the new info:

http://www.mathworks.com/matlabcentral/answers/7924-where-can-i-upload-images-and-files-for-use-on-matlab-answers

Answer 5

[sas0701]

Hi,

Please see attached file here: http://fileslap.com/9hn/Coh070911fx

[Sean de Wolski]

link not working

Answer 6

[sas0701]

I am trying to modify the CLim in the above saved figure..i.e. without creating a new figure.

Answer 7

[sas0701]

Hi, Anybody? Want to modify CLim in a saved figure without regenerating it.

Thanks,

[Sean de Wolski]

CLim is the property of an axes; so get the children of the figure, and modify the clim property of them using set()

[sas0701]

This worked.

Open figure. Manually click on it (for some reason this needs to be done) to select it.

set(gca,'CLim',[a b])

This rescales the colors in the figure and updates the colorbar.

Thank you Sean!