cdata and cmap problem

Question

Anusha 2013-10-23

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链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/91232-cdata-and-cmap-problem

评论： Image Analyst 2013-10-23

this is color map and palette of an image

[cdata cmap]=imread('pc.gif');

cdata=index matrix

correspoding palette(RGB) is stored in a cmap...

if i take a cmap and change the position cdata will automatically should changed..

Please tell what to do with that..

This is my big doubt

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Answer 1

Image Analyst 2013-10-23

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https://ww2.mathworks.cn/matlabcentral/answers/91232-cdata-and-cmap-problem#answer_100635

在 MATLAB Online 中打开

I have no idea what you are trying to do. Please read this: http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer. The only thing I can figure out is that you're reading in a .gif file and want to display it with the proper colormap. So you do this

[indexedImage, customColorMap] = imread('pc.gif');
imshow(indexedImage);
colormap(customColorMap);

I have no idea why you're messing around with cdata, and I can't figure out if you're talking about the actual cdata of the axes, or the cdata which you mistakenly called your indexed image.