How do I get the same image as generated by imagesc using ind2rgb

I am trying to convert a grayscale image with a colormap to an rgb image using ind2rgb but it loses most of the detail displayed by imagesc using the same colormap and input image.

An example is shown below

 map=jet;
 A=rand(500,500);
 figure,imagesc(A), colormap(map)

 A=uint8(256*A);
 figure,imagesc(A), colormap jet
 B=ind2rgb(A,map);
 figure,imshow(B)

In the example above I want B to be the same as the image displayed by imagesc.

Many thanks in advance!

Answer 1

[Ahmet Cecen]

Try:

map=jet(256);

[Michael Devereux]

Thanks!