How to add transparency to a dendrogram

Hi. How to add a tranparency to a dendrogram?

% example
X = rand(10,3);
tree = linkage(X,'average');
dendrogram(tree)

Thank you

[KALYAN ACHARJYA]

Can you elaborate more (which section-transparency)?

[Rafael Freire]

Hi.

In all plot.

Answer 1

[Adam Danz]

Set up the dendrogram and store the line object handles from the first output of dendrogram().

% Set up the dendrogram
X = rand(10,3);
tree = linkage(X,'average');
denHand = dendrogram(tree)   % Get the line handles output

Set the transparency to 50% (or any other value between 0 and 1) by adding a 4th value to the RGB color vector using the color of the first line object as a base. This is an undocumented feature in Matlab.

% Set transparency of dendrogram lines
set(denHand, 'Color', [denHand(1).Color, 0.5])

To set transparency of the axes (is that what you want to do?),

set(gca, 'color', 'none')      % completely transparent
set(gca, 'Color', [1 1 1 .5])  % same undocumented method listed above