colour variation (transparency) on the overlapping bars of 2 bar charts

Hi! I have two bar charts placed in the same figure:

load C.mat

figure
hbh = barh(C(:,1), C(:,[2 3]),'stacked');
cm  = ['b'; 'r'];
for k =  1:numel(hbh)
    hbh(k).FaceColor = cm(k,:);
    hbh(k).EdgeColor = 'k';
    % hbh(k).FaceAlpha = 0.2;
end
legend('Graph 1', 'Graph 2', 'Location','best')

I would like to obtain a result like this (colour variation on the overlapping bars):

I have applied the 'FaceAlpha' command but it only changes the transparency of the bars.

Answer 1

[DGM]

The transparency has no effect because there's nothing behind it. You're stacking the bars end-to-end, not on top of each other.

y1 = 1:10;
y2 = fliplr(y1);

% two bar plots, one atop the other
hbh(1) = barh(y1); hold on
hbh(2) = barh(y2);

cm  = ['b'; 'r'];
for k =  1:numel(hbh)
    hbh(k).FaceColor = cm(k,:);
    hbh(k).EdgeColor = 'k';
    hbh(k).FaceAlpha = 0.2;
end
legend('Graph 1', 'Graph 2', 'Location','best')