correlation map sorted by hierarchy with dendrogram

Hey.

I have a matrix of featurs X samples. I want to plot a correlation map between the features (features X features) that will be sorted by hierarchical clustering and I want the dendrogram to be ploted on the figure.

I have tried clustergram and cluster only on features but it creates a featurs X samples map sorted by features. How can I use this sorting for the correlation matrix?

I've also tried to to use linkage and sort the correlation matrix by optimalleaforder but then I don't know how to plot the dendrogram above the image, and I'm also not sure I'm doing it right.

this is the linkage way I tried:

tree = linkage(data,'single','correlation');
dist = 1-corr(data');
dist=round(dist,5);
leafOrder = optimalleaforder(tree,dist);
corr_map = corr(data');
figure, imagesc(corr_map(leafOrder,leafOrder)-eye(sum(num_features)))

What is the best way to do it?

Thanks for your help!

Oded