Reverse/flip values in the colorbar axis

Hi,

In the attached figure, I have reverse the values in the color bar i.e. red to be positive and blue to be negative. Please help me with this. I have tried flipud, but it changes the color pattern in the contour.

Answer 1

[Bjorn Gustavsson]

If you want exactly that colormap, but flip it you can do this:

cmp = colormap;
cmp = flipud(cmp);
colormap(cmp);

You should be able to re-set the colormap to jet in one call:

colormap(jet)

HTH

[Turbulence Analysis]

Hi,

Nothing been changed. I am getting exactly the same..

[Bjorn Gustavsson]

In that case your colormap is made in some other fashion than with the built-in colorbar command. This should show that my suggestion works:

imagesc(peaks(123))
colorbar;
pause(1)
cmp = colormap;
cmp = flipud(cmp);
colormap(cmp)

[TREVOR IRONS]

This works, but it's terribly cumbersome. Mathworks, please introduce reversed colourmaps!

[Bjorn Gustavsson]

Not that I disagree with your request for additional colormap-utilities, but "teribly cumbersome" might be a bit of an exageration for what can be done with something as simple as a one-liner:

colormap(flipud(colormap))

that is only 26 characters...