How can I add a diagonal gradient and corresponding colorbar to a plot?

This is what I'd like to create with my own data, how can I add that gradient and colorbar to my plot

Answer 1

[darova]

An example:

[X,Y] = meshgrid(1:0.1:3);
Z = X+Y;
pcolor(X,Y,Z)
shading interp
colorbar('Location','NorthOutside')

You can also create your own colormap

[Halle Berger]

Thanks!

Answer 2

[Jalaj Gambhir]

Hi, colormap's can be used to do so. Look at an example here.

[Halle Berger]

That's what I was thinking but I'm not exactly sure how to