give name to node in dendrogramm

hi guys! I need to rename number-node on the right side of this dendrogramm, how I can do that? tnx!

Answer 1

[Massimo Zanetti]

Use the 'Labels' property of the dendogram plot. Keep in mind that dendrogram labels any leaves in the dendrogram plot containing a single data point with that data point's label.

For example, assume you have a dendogram with 5 leaves, create a cell that lists {'label 1', 'label 2',...,'label 5'}, and set this cell as argument of 'Labels' property. This will assign 'label 1' to leaf 1, ..., 'label n' to leaf n.

X = rand(5,2);
Y = pdist(X);
Z = linkage(Y,'average');
%create cell of labels 
labels = cellstr(num2str((1:size(X,1))', 'label %d'))
%plot dendogram with custom labels
h=dendrogram(Z, 0, 'Labels', labels, 'orientation', 'left');

Answer 2

[Kelly Kearney]

The answer will depend on whether you're showing all the leaves of the dendrogram or not. If yes, then the 'Labels' input will do the trick:

X = rand(50,2);
Y = pdist(X,'cityblock');
Z = linkage(Y,'average');
labels = cellstr(num2str((1:size(X,1))', 'test%d'));
dendrogram(Z, 0, 'Labels', labels, 'orientation', 'left');

If you're truncating the leaves (second input >0 and <size(X,1)), things get a little more complicated, since the above only labels single-node leaves. I've done it, but would have to dig around for the code... so comment if you need that.

[Ben]

Hi Kelly, I'm trying to get the x-axis labels to work with truncated leaves - do you have the code to share? I realise this is a very old thread!