Turn greyscale into colorscale

Question

I am working on a Matlab script which applies a Laplacian filter to an image, and plots the result in greyscale. Do you have any suggestion on how to plot it using a colorscale instead?

Here is the code:

A=open('file.fits');
B=A.mcp;
H = fspecial('laplacian', 1); %fspecial creates a filter
I = imfilter(B, H);
figure;
imshow(I,[])

Answer 1

Use imagesc, or imshow(im2uint8(I), jet(256)).