blue to red colormap

colormap showing a gradient from blue to green, then from green to red

Description

usage :
map = blue2red;
colormap(blue2red);

Returns a 256x3 array which can be used with colormap.
map(1,:) corresponds to blue color,
map(64,:) corresponds to cyan color,
map(128,:) corresponds to green color,
map(192,:) corresponds to yellow color,
map(256,:) corresponds to red color,
and all indices inbetween are gradient between the 2 extremes colors.

Example
colormap(blue2red);

• MATLAB release: MATLAB 7.1.0 (R14SP3)

[Jody Klymak]

This is just a subset of the jet colormap.

[JEss]

i am wondering if it is possible to have a complete opposite of the jet colormap? currently, the jet colormap start with blue and ends with red. I will like to have it starts with red and ends with blue for my project. Do you have any idea what functions can i use?

[David Legland]

to Jess:
you can reverse your colormap using matlab indexing:
map1 = jet(256);
map2 = map1(end:-1:1, :);