how to use colorbar and colormap?

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nur izzati
nur izzati le 7 Déc 2011
How to set the color at image same as color at color bar? How color map works?

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Chandra Kurniawan
Chandra Kurniawan le 7 Déc 2011
clear; clc;
I = imread('cameraman.tif');
imagesc(I); colormap(jet); colorbar;
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nur izzati
nur izzati le 7 Déc 2011
Thank you,
and can I use colormap function for rgb image? because if I didnt convert rgb to gray image, the color in image is not parallel with color in color bar.
Image Analyst
Image Analyst le 7 Déc 2011
You might be able to call it but it won't apply to any true color images residing on your figure. A colormap just doesn't make any sense for an image that is already in color, it only makes sense to apply a color to a gray level.

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