How to correspond line colors with histogram

I made these overlapping histograms using a for loop. I'm trying to get the lines in the same color as the histograms. Does anybody know how to do this?

[~,ErrorLength]= size(out);

for i =1:ErrorLength

hold on

m = histogram(out(:,i),'normalization','pdf');

f = fitdist(out(:,i),'kernel');

hoi = pdf(f,x);

l = line(x,hoi,'linestyle','-','linewidth',2);

hold off

end

xlabel('Orientation');

ylabel('Error rate');

legend('Target 1','','Target 2','','Target 3','','Target 4','')

Answer 1

[Star Strider]

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.

[MadjeKoe]

Thank you so much!

[Star Strider]

As always, my pleasure!

You can choose any colormap you want, or create your own. There are several options.

[MadjeKoe]

Do you maybe know how to remove the lines? I can't get them to be removed

[Star Strider]

If you are referring to the edge lines around the histogram bars, put this assignment after the histogram call:

m.EdgeColor = 'none';

If you are referring to something else, please provide a bit more detail.

[MadjeKoe]

Oh i'm sorry, that was a bit unclear. I meant the problem with the legend because it also displays the lines in it.

[Star Strider]

No worries!

In that event, it is simply necessary to keep track of the histogram handles, then pass them to the legend call, and lightly edit the legend call arguments.

The full code is now:

out = randn(1500,4).*[10 20 30 40];                                     % Create Data To Test Code
x = linspace(-80, 80);                                                  % Create Data To Test Code

cm = jet(size(out,2));                                                  % Define ‘colormap’
[~,ErrorLength]= size(out);

figure
hold on
for i =1:ErrorLength
    m{i} = histogram(out(:,i),'normalization','pdf')
    m{i}.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’ 
end
hold off
xlabel('Orientation');
ylabel('Error rate');
legend([m{:}], 'Target 1','Target 2','Target 3','Target 4')

Note that ‘m’ is now ‘m{i}’, and they are included as the first argument of the lightly edited legend call. (I also updated my version of your code to make it a bit more efficient.) The edge lines around the histogram bars have returned as well.

[MadjeKoe]

Thank you very much! Ik worked with () instead of {}!

[Star Strider]

As always, my pleasure!

It worked for me with both. I used {} (cell array) to be safe.