How can i create a color vector for markers in a scatter plot?
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I have two vectors X,Y. I would like to make a scatter plot scatter(x,y,s,c), but i don't have a C vector. So my quaestion is, how can i make a C-vector with the same lenght as my other vecotrs in such a way that i get the right color settings on my plot.
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Arnaud Miege
on 1 Jun 2011
It depends what you mean by the "right colour settings". The following will give you a C matrix of the right size, but whether that's the colour settings you expect, it's another question:
C = rand(length(x),3);
scatter(x,y,s,C); % where x, y and s are already defined
Arnaud
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Arnaud Miege
on 1 Jun 2011
I think you can do one or the other but not both at the same time. The following will colour the scatter plot based on the number of point with a certain y:
load seamount
n = hist(y,length(x));
scatter(x,y,5,n)
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