MATLAB: Histogram of joint probability distribution

histogram

Hi, I would like to ask how is it possible to plot a 3D histogram (chart type in excel = 3-D column) based on a joint probability table?
for instance,
gender
               jan         feb      mar        apr
male            0.05      0.15    0.025      0.375 
female         0.125      0.075   0.05       0.15
I've searched through hist3. but it seems that we need to have the inputs of X, Y, Z, which appear to be in the same length.
in this case, what shall be the inputs to plot a 3D histogram? Thanks in advance.

Best Answer

You already have calculated the probabilities thus you have to use bar3() instead of hist3() (which is used when you still have to count)
X = [0.05      0.15    0.025      0.375 
     0.125      0.075   0.05       0.15]
h = bar3(X');
Some additional embelishments
% Set labels
set(gca,'XtickL',{'male','female'},'YtickL',{'jan','feb','mar','apr'})
% Change colors
colormap cool
% Set transaprency
set(h(1),'facea',.5)
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