Hi,

I've never done it in matlab but most well evolved languages have some kind of mesh surface mapping (I'm assuming you want a spherical surface and not a spherical volume).

That said the "surf" function should be able to provide you with what you want. There's actually an example in the documentation with a sphere surface mapped by a binary variable. Check this:

http://www.mathworks.com/help/matlab/ref/surf.html

For more on how to colomap and obtain a colorbar check this:

http://www.mathworks.com/help/matlab/visualize/coloring-mesh-and-surface-plots.html

If you need something a bit more complete you can try GEOMS2 that has a "world view" in which you can transform a normal colormapped grid (regular mesh) into a spherical surface.

http://sourceforge.net/projects/geoms2/?source=navbar

Hello!

You also can use the code below:

n = 30; %Define Resolution

[x,y,z] = sphere(n); %Create A Sphere With Unit Radius @ (0,0,0)

F = abs(x + y + z) / sqrt(3); %Declare 3D-Function Here F(x,y,z)

surf(x,y,z,F); %Draw Sphere

%% White to Blue Colormap:

r = linspace(1,0,n)'; %Define Red Color Gradient

g = r; %Define Green Color Gradient

b = ones(n,1); %Define Blue Color Gradient

colormap([r g b]) %Apply Color Map

%%

colorbar %Draw Color Bar

axis equal %Equalize Axes

 If you are interested in using Mathematica to solve your problem you should look at using Mathematica ColorFunction option for SphericalPlot3D. This function is quite flexible. You can also look at the TextureCoordinateFunction as another option. I have posted a Mathematica notebook that describes how to use these functions (as well as a PDF version) at the following website: https://sites.google.com/site/ekayasolutionsgraphic/home. The PDF file is attached