Adjusting bar colours in plot

I am working with a bar chart that has at most 13 sub-bars per x-tick (see figure). The problem I have is that some bars appear as the same colour and I thus have no way to distinguish between them. (there are thirteen data sets I am trying to visualize, each of which can (partially)fall into 8 different categories)

I am trying to map a different set of colours to each individual bars by means of a unique RGB code. For the thirteen data entries I have here, I also have 13 unique RGB handles.

However I am unable to map the entries into the CData of the current figure, nor specify a different CData beforehand.

Below you can see the CData of the current figure:

            if true
              % code
%p1.CData
%ans =
%
%         0    0.4470    0.7410
%         0    0.4470    0.7410
%         0    0.4470    0.7410
%         0    0.4470    0.7410
%         0    0.4470    0.7410
%         0    0.4470    0.7410
%         0    0.4470    0.7410
%         0    0.4470    0.7410
%
%
%ans =
%
%    0.8500    0.3250    0.0980
%    0.8500    0.3250    0.0980
%    0.8500    0.3250    0.0980
%    0.8500    0.3250    0.0980
%    0.8500    0.3250    0.0980
%    0.8500    0.3250    0.0980
%    0.8500    0.3250    0.0980
%    0.8500    0.3250    0.0980%
%
%
%ans =
%
%    0.9290    0.6940    0.1250
%    0.9290    0.6940    0.1250
%    0.9290    0.6940    0.1250
%    0.9290    0.6940    0.1250
%    0.9290    0.6940    0.1250
%    0.9290    0.6940    0.1250
%    0.9290    0.6940    0.1250
%    0.9290    0.6940    0.1250
%
%
%ans =
%
%    0.4940    0.1840    0.5560
%    0.4940    0.1840    0.5560
%    0.4940    0.1840    0.5560
%    0.4940    0.1840    0.5560
%    0.4940    0.1840    0.5560
%    0.4940    0.1840    0.5560
%    0.4940    0.1840    0.5560
%    0.4940    0.1840    0.5560
end
where there are 13 of these 8 by 3 matrices(?)

I only want to ensure these bars all have a unique colour

[Robin Vervaat]

Solved the problem I was having

if true
  % 
for i= 1:13
set(p1(:,i),'Facecolor',c(i,:))
set(p2(:,i),'Facecolor',c(i,:))
set(p3(:,i),'Facecolor',c(i,:))
set(p4(:,i),'Facecolor',c(i,:))
end

Where c is the list of 13 rows with a unique RGB code and p1,p2 etc the plot names.

Answer 1

[Adam]

Try editing the 'ColorOrder' property of your axes to define 13 colours rather than the default 7 before you do the plotting. How you determine those colours is up to you, but those are what is used for plots (and I guess for bar charts too though I rarely use bar charts).

If there are fewer colours in 'ColorOrder' than there are plot objects it just cycles round those colours endlessly.