bluewhitered

Blue, white, and red colormap for images with positive and negative values.

Description

BLUEWHITERED(M) returns an M-by-3 matrix containing a blue to white to red colormap, with white corresponding to the CAXIS value closest to zero. This colormap is most useful for images and surface plots with positive and negative values. BLUEWHITERED, by itself, is the same length as the current colormap.

Examples:
------------------------------
figure
imagesc(peaks(250));
colormap(bluewhitered(256)), colorbar

figure
imagesc(peaks(250), [0 8])
colormap(bluewhitered), colorbar
 
figure
imagesc(peaks(250), [-6 0])
colormap(bluewhitered), colorbar

figure
surf(peaks)
colormap(bluewhitered)
axis tight

• MATLAB release: MATLAB 6.5 (R13)

[Yannis Cuypers]

Usefull, such a colormapwas actually missing in Matlab

[Johnny Cash]

useful

[cynthia solly]

 

[John Doe]

cool! good work!

[Kazem Edmond]

EXACTLY what I needed. Thanks so much.

[Kim Bostroem]

Absolutely useful. Incredible that it's not included in MATLAB already!!!

[Sandra]

 

[Ste]

It's a great function! the only problem I encounter is when I try to fix the colorbar (with caxis). The zero does not stay in the same place (at the white)but moves to red or blue.. Anyone an idea how to solve that?