The FaceColor property of the bars is 'auto', so if you want the colors to be the same, it is necessary to define them:
out = randn(500,3).*[10 20 30]; % Create Data To Test Code
x = linspace(-80, 80); % Create Data To Test Code
cm = jet(size(out,2)); % Define ‘colormap’
[~,ErrorLength]= size(out);
for i =1:ErrorLength
hold on
m = histogram(out(:,i),'normalization','pdf')
m.FaceColor = cm(i,:); % Define ‘FaceColor’
f = fitdist(out(:,i),'kernel');
hoi = pdf(f,x);
l = line(x,hoi,'linestyle','-','linewidth',2, 'Color',cm(i,:)); % Define Line ‘Color’
hold off
end
xlabel('Orientation');
ylabel('Error rate');
legend('Target 1','','Target 2','','Target 3','','Target 4','')
You will need to fix the problem with the legend.
EDIT — (15 Oct 2020 at 12:17)
Added ‘out’ and ‘x’ definitions.
