How to save a new modified colormap ?

Hi, I have been using the 'jet' colormap to display my figures, but I want to make a minor modification. I want to set the 0 values to be black. I changed this by setting the middle rows in the existing colormap data to zero.

mymap = jet; mymap(32:33,:)=0;

how do I save this new colormap called 'mymap', so that I can use it as a colormap?

Answer 1

[Adam]

filename = 'C:\Me\colourmaps\myColourmap.mat';
save( filename, 'mycmap' );

Obviously filename is whatever you choose it to be, but should ideally be a full path. It doesn't have to be, if not it will be saved in the current directory, but I prefer to be explicit.

[Mostafa Ibrahim]

Hi Adam, and how to call this file again to use it please

[Adam]

loadedData = load( filename, 'mycmap' );

colormap( hAxes, loadedData.mycmap );

where hAxes is your axes handle