Can I use contourf with two matrices?

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Jaime de la Mota
Jaime de la Mota 2018-7-10
评论： Jaime de la Mota 2018-7-11
Hello everyone, I have two matrices if size 9*50.000 called fX and fY, I want to see how they correlate. I have done the following to graphically represent the correlation:
for i=1:repetitions
fXi=fX(:,i);
fYi=fY(:,i);
plot(fXi, fYi, '.')
end
And I have obtained the following image:
However I find this not visually appealing. Is there any way of using contourf to show this?
Thanks for your answer.

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jonas
jonas 2018-7-10
编辑：jonas 2018-7-10
Perhaps you are looking for a density plot, try this:
hist3([fX(:), fY(:)],'CDataMode','auto')
You can increase the number of bins to make it more visually appealing, by adding [NBinsX NBinsY] as the second argument.
You can also plot the output using contourf
nbins=[30 30];
[N,C]=hist3([fX(:), fY(:)],nbins)
contourf(C{1},C{2},N)

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