How do I make colors for scatter3 same as in Stata graphs

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B de Bruin 2020-8-17

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https://ww2.mathworks.cn/matlabcentral/answers/580563-how-do-i-make-colors-for-scatter3-same-as-in-stata-graphs

回答： Aditya Patil 2020-11-20

I have data that I visually represent using Stata and using MatLab. I have seven colors in the Stata graph, corresponding with seven groups. I would like to use the same colors in the MatLab graph I create with scatter3d. How?

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Answer 1

Aditya Patil 2020-11-20

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You can pass a 3D matrix of RGB values to scatter3 function as in following example,

[X,Y,Z] = sphere(16);
x = [0.5*X(:); 0.75*X(:); X(:)];
y = [0.5*Y(:); 0.75*Y(:); Y(:)];
z = [0.5*Z(:); 0.75*Z(:); Z(:)];
S = repmat([50,25,10],numel(X),1);
C = repmat([1,2,3],numel(X),1);
s = S(:);
c = C(:);
figure
scatter3(x,y,z,s,c)
view(40,35)