How to Setting Custom Colours in 4D figures (Slice Function)?
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[x,y,z] = meshgrid(-2:.2:2,-2:.25:2,-2:.16:2);
v = x.*exp(-x.^2-y.^2-z.^2);
xslice = [-1.2,.8,2]; yslice = 2; zslice = [-2,0];
slice(x,y,z,v,xslice,yslice,zslice)
I want to change the colour according the value of v.
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Accepted Answer
Sean de Wolski
on 23 Dec 2013
Edited: Sean de Wolski
on 7 Jan 2014
The color right now is changed according to v...
That's why the color in the middle shows up.
More per clarification
Build another array, C, that will be an index into the colormap:
[x,y,z] = meshgrid(-2:.2:2,-2:.25:2,-2:.16:2);
v = x.*exp(-x.^2-y.^2-z.^2);
xslice = [-1.2,.8,2]; yslice = 2; zslice = [-2,0];
%
%v<0, blue; 0<=v<0.2, green; 0.2<=v, red.
%
C = ones(size(v)); %blue
C((v > 0) & (v < 0.2)) = 2; %green
C(v>=0.2) = 3; %red
colormap([0 0 1;0 1 0;1 0 0]); %bgr
slice(x,y,z,C,xslice,yslice,zslice)
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