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### Highlights from Red Blue Colormap

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# Red Blue Colormap

A colormap from bright blue, through white, and then to bright red.

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Description

REDBLUE(M), is an M-by-3 matrix that defines a colormap.
The colors begin with bright blue, range through shades of blue to white, and then through shades of red to bright red. REDBLUE, by itself, is the same length as the current figure's colormap.

Acknowledgements
MATLAB release MATLAB 7.7 (R2008b)
02 Apr 2015 Stephen Cobeldick

### Stephen Cobeldick (view profile)

@Rob Campbell: a good idea, but that code give the wrong length output if |m| is odd. Here is one possible fix:

n = fix(m/2);
x = n~=(m/2);
r = [(0:1:n-1)/n,ones(1,n+x)];
g = [(0:1:n-1)/n,ones(1,x),(n-1:-1:0)/n];
b = [ones(1,n+x),(n-1:-1:0)/n];
c = [r(:),g(:),b(:)];

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06 Jun 2014 Felipe Orellana

### Felipe Orellana (view profile)

Thanks a lot dude. I appreciate your effort.

thank you very much,

Felipe

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28 Dec 2010 chsharrison

### chsharrison (view profile)

Just what I was looking for

21 Oct 2010 Mathias Vanwolleghem

### Mathias Vanwolleghem (view profile)

08 Jan 2010 Rob Campbell

### Rob Campbell (view profile)

Thankyou: nice colormap. What do you think of this? A neater way to obtain c:

n = fix(0.5*m);
r = [(0:1:n-1)/n,ones(1,n)];
g = [(0:n-1)/n, (n-1:-1:0)/n];
b = [ones(1,n),(n-1:-1:0)/n];
c = [r(:), g(:), b(:)];

09 Oct 2009 Xianmin

### Xianmin (view profile)

The function "colormapeditor" from MATLAB will be helpful to customizer the colormap

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