Modify colorbar in .fig file

Question

sas0701 2012-2-23

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编辑： S. 2013-10-24

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

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Answer 1

Tom 2012-2-23

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Try: caxis([0.1 0.7])

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Sean de Wolski 2012-2-23

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

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Answer 2

Sean de Wolski 2012-2-23

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在 MATLAB Online 中打开

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?

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Answer 3

sas0701 2012-2-23

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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

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Tom 2012-2-23

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 2012-2-23

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

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Answer 4

sas0701 2012-2-23

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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!

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sas0701 2012-2-23

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

Sean de Wolski 2012-2-23

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

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