Plot weighted sparsity pattern

Hi,

I am trying to visualize a weighted (i.e., color-coded) sparsity pattern. I tried "spy" but it only shows '1' and '0', and I want to show the weighted (color coded with spectra) dots.

For example, I created the adjacency matrix (for graph theory) using Pearson's correlation thresholded at p<0.01. However, I want to show the rho's in some thing like spy...

Please help!

Best,

Ji Hyun

Answer 1

[bym]

See if this gets you close

x = rand(100);
y = zeros(100);
y(x<.025) = x(x<.025);
cmap = [1 1 1;jet];
imagesc(y)
colormap(cmap)

[Ji Hyun Ko]

It works perfect! Thank you!