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How to select different colors and legend for the bar plot??

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Hello everyone, I plot this bar plot in order to show the difference between each model (3 models) in condition A and condition B. x = rand(3,2);
x = rand(3,2);
h = bar (x);
I want to set, for example, red for the first model in condition A and blue for condition B (In this model).
As well as two different colors like green and yellow for the second model in each condition. Like this plot below:
And also, set the corresponding legend for each color. So I want to have 6 items in legend (different colors).
Any suggestion is really helpful
Thank you.

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Accepted Answer

Turlough Hughes
Turlough Hughes on 27 Jul 2020
Edited: Turlough Hughes on 27 Jul 2020
For the first part of your question, you can do so as follows:
x = rand(3,2);
h = bar (x);
h(1).FaceColor = 'red'
h(2).FaceColor = 'blue'
For the second part, patterned face colours aren't provided for with the bar() function. When you plot a bar chart such as:
h = bar(rand(3,6))
you can continue to modify the colors of any model using the same procedure as above. Additionally the legend will update for you accordingly:
legend('model A','model B','model C','model D','model E','model F')

  3 Comments

Behzad Navidi
Behzad Navidi on 27 Jul 2020
Thank you, So it is not possible to have something like this? yea?
I want to show each bar with different color, it is not possible?
thanks
Turlough Hughes
Turlough Hughes on 27 Jul 2020
You could do the following:
data = rand(1,6);
groupSize = 2;
figure(), hold on
x = 0;
for c = 1:numel(data)
x = x + 1;
b(c) = bar(x,data(c));
if mod(c,groupSize)==0 %after each group skip a position on the x axis
x = x + 1;
end
end
spacing = groupSize+1;
ax = gca;
ax.XTick = spacing/2:spacing:v-spacing/2;
ax.XTickLabel = {'model 1','model 2','model 3'};
Turlough Hughes
Turlough Hughes on 27 Jul 2020
You can modify the individual bars then as follows:
b(3).FaceColor = 'g';
b(4).FaceColor = 'm';
b(5).FaceColor = 'k';
b(6).FaceColor = 'y';

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More Answers (1)

Sugar Daddy
Sugar Daddy on 27 Jul 2020
Edited: Sugar Daddy on 27 Jul 2020
2nd Part of Question (Pattern Face)
This code is computation intesive and is just for display purpose. (considering that max value is less than 1)
figure,
x = rand(3,2);
c = [1 2 3];
h = bar (c,x,'BarWidth',1);
h(2).FaceColor = 'none';
h(2).LineWidth = 2;
%
jj = 1;
hold on
%
a =gca; clr_array = a.ColorOrder;
for mm = 1:3
for i = x(mm,2):-.01:0
if(jj == 1)
jj = 2;
bar(mm,[0;i],'FaceColor','w','EdgeColor','none','BarWidth',1)
else
bar(mm,[0;i],'FaceColor',clr_array(mm,:),'EdgeColor','none','BarWidth',1)
jj = 1;
end
end
bar(mm,[x(mm,1);0],'FaceColor',clr_array(mm,:),'LineWidth',2,'BarWidth',1)
bar(mm,[0;x(mm,2)],'FaceColor','none','LineWidth',2,'BarWidth',1)
end
Regards,
Sugar Daddy

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