How to post the values in the middle of a stacked bar plot?
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Hi!
I'm new to MatLab and I want to make a plot with the values present in the middle of the bars.
x = [0 0 20 52.5 27.5; 5 10 50 20 15; 2.5 5 25 47.5 20; 5 5 42.5 45 2.5; 2.5 27.5 40 27.5 2.5; 2.5 12.5 65 20 0]
bar (x, 'stacked')![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1060555/image.png)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1060555/image.png)
1 Comment
dpb
on 10 Jul 2022
Dunno what you mean??? Going to have to do more than that to explain...you know what you want, we only know what you tell us.
Accepted Answer
Voss
on 10 Jul 2022
Edited: Voss
on 10 Jul 2022
x = [0 0 20 52.5 27.5; 5 10 50 20 15; 2.5 5 25 47.5 20; 5 5 42.5 45 2.5; 2.5 27.5 40 27.5 2.5; 2.5 12.5 65 20 0]
[m,n] = size(x);
xx = (1:m).'+zeros(1,n); % x-coordinates of texts, for both methods below
One way, using the properties of the bar objects created with bar:
h = bar (x, 'stacked');
ydata = cell2mat(get(h,'YData'));
yendpoints = cell2mat(get(h,'YEndPoints'));
yy = (yendpoints-ydata/2).'; % y-coordinates of texts
text(xx(:),yy(:),sprintfc('%.1f',x),'HorizontalAlignment','center')
Another way, using just the data x:
figure
bar (x, 'stacked');
yy = cumsum([zeros(m,1) x],2);
yy = (yy(:,1:end-1)+yy(:,2:end))/2; % y-coordinates of texts
text(xx(:),yy(:),sprintfc('%.1f',x),'HorizontalAlignment','center')
Notice that bars with zero height are labeled '0.0'. You can omit the labels for zero-height bars:
figure
bar (x, 'stacked');
% calculate yy using either of the above methods
idx = x ~= 0;
text(xx(idx),yy(idx),sprintfc('%.1f',x(idx)),'HorizontalAlignment','center')
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