Can I use contourf with two matrices?

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.

Answer 1

[jonas]

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)

[Jaime de la Mota]

Yes. This helps me a lot. Thank you very much.