How to add lables on each coloumn of grouped stacked bar chart?

Hello,

I used the function of Plot Groups of Stacked Bars to make the grouped stacked bar chart, and I used this method to change the color of each bar.

Here is what I made:

This is what I would like to add on top of each coloumn:

Can some one tell me how to put the lable on top on earch coloum?

[Tommy]

You may find the following answer helpful:

https://www.mathworks.com/matlabcentral/answers/359237-how-do-i-label-each-bar-in-bar-group-with-a-string-on-top#answer_283896

Along with the Rotation property of Text objects.

[feihong xu]

Thank you very much!

Answer 1

[Adam Danz]

h is the array of handled that you added as an output to the PlotBarsStackGroup function from the file exchange.

To add the labels to the top of the bars

% Detect number of groups.
nGroups = numel(h(1,1).YData);

% Define labels for groups of 5 bars
labels = {'Lancaster','Cincinnati','Sofia','Rochester','Boston'};

% Compute the height of each bar stack and add label to top
offset = range(ylim)*.01; 
for i = 1:size(h,1)
    ysum = sum(reshape([h(i,:).YData],nGroups,[]),2);
    text(h(i,1).XData,ysum+offset,labels{i},'HorizontalAlignment','left',...
        'VerticalAlignment','middle','rotation',90)
end

You may need to change the ylim() so the labels do not run off of the upper axis limits.

Here's an alternative that does not use a loop.

% Get the (x,y) coordinates for the top of each bar stack
y = sum(reshape(cell2mat(get(h', 'YData')),size(h,2),[]),1); 
x = unique(cell2mat(get(h', 'XData')),'stable')
% Define labels, then replicate them for all groups
labels = {'Lancaster','Cincinnati','Sofia','Rochester','Boston'};
allLabels = repmat(labels,1,numel(h(1).XData)); 
% Plot the text labels
offset = range(ylim)*.01; 
th = text(x,y+offset,allLabels,'HorizontalAlignment','left',...
        'VerticalAlignment','middle','rotation',90)

[feihong xu]

Thanks a lot! it works very well!