Matlab直方图上的多种颜色

Question

Hi I am trying to get multiple colours on a matlab histogram - i think the following should do it:

figure
hist(ligand,50)
h=findobj(gca,'Type','patch');
set(h,'FaceColor',[0 .5 .5],'EdgeColor','w')
hold on;
hist(potassium,50)
g=findobj(gca,'Type','patch');
set(g,'FaceColor',[0 1 1],'EdgeColor','w')
hold on;
hist(rectifier,50)
title('Alignment to AFP1')
xlabel('Score'); ylabel('Number of Sequences')
hold off;

where the first colour is [0 .5 .5], the second [0 1 1] and the third is the default colour. However even though I have specified two separate colours for the first two using two handles, h and g - both are the same colour, using the g handle.

What am I doing wrong?

edit - this is for Luis Mendos's suggestion - I am getting an "index exceeds matrix dimensions" with the following

figure
hist(ligand,50)
g=findobj(gca,'Type','patch');
set(g(1),'FaceColor',[0 .5 .5],'EdgeColor','w')
hold on;
hist(potassium,50)
set(g(2),'FaceColor',[0 1 1],'EdgeColor','w')
hist(rectifier,50)
title('Alignment to AFP1')
xlabel('Score'); ylabel('Number of Sequences')
hold off; 

Thanks.

Answer 1

The problem is that g is a two-element vector, because it includes the two histograms that have already been plotted. Remove the lines with h (lines 3 and 4) and replace the line set(g,...) by

set(g(1),'FaceColor',[0 .5 .5],'EdgeColor','w')
set(g(2),'FaceColor',[0 1 1],'EdgeColor','w')