Stacked bar chart and writing value inside each bar and a value in top of the bar

Here, I want to show each y value inside the resepective stacked bar without adding cumulatively..To show the

value properly (As some values are really large and some are small) , I multiplied and devided value accordingly. Still

values are not shown properly. Width of the bar is not sufficient to show the value also. Additionally,

I want to show E{i} on top of each stacked bar. Moreover, for a particular value of i=index, I want to display bar with differnt color.

I am new to matlab. I could not do all. I would really appreciate your response.

for i=1:20
    A{i}=randi([100,1000]);
    B{i}=randi([100,300]);
    C{i}=randi([2,30]);
    D{i}=randi([2,30]);
    E{i}=randi([0,2]);
end
hold on;
index=10;
for i=1:20
    y=[A{i}/5,B{i}/5,C{i}*5,D{i}*5];
    bh = bar(i,y,'stacked','FaceColor', 'Flat');  
    
    % Choose a color map (using "lines" in this example)
    if i~=index
         colors =  mat2cell(lines(numel(bh)),ones(numel(bh),1), 3);
        set(bh, {'CData'}, colors) 
    else
       colors =  mat2cell(jet(numel(bh)),ones(numel(bh),1), 3); 
        set(bh, {'CData'}, colors) 
    end
    % Compute the height of each segment and write text to plot
    text(repmat(i,1,numel(bh)), y, compose('%.1f',y), 'Color', 'w', ...
        'FontSize', 8, 'HorizontalAlignment', 'Center', 'VerticalAlignment', 'Top')
end

[dpb]

"want to show each y value inside the resepective stacked bar without adding cumulatively."

Well, the positions in a stacked bar are cumulative so to compute the y position for text you'll have to do the same arithmetic...

[dpb]

Actually, I forgot. Presuming you have at least R2019b (and maybe a release or two earlier, not sure when) TMW exposed the .X|YEndPosition values that are what you need...

Using the example for bar for stacked chart,

hBar=bar(y,'stacked');
hold on
arrayfun(@(i) text(hBar(i).XEndPoints,hBar(i).YEndPoints,num2str(hBar(i).YEndPoints.','%0.1f'), ...
               'verticalalignment','top','horizontalalign','center'),[1:numel(hBar)])

yields

The value outside the bar can be done by using 'VerticalAlignment','bottom' and whatever value you desire to be displayed.

The problem of room is one I think can be solved by either making the axes wider or the font smaller if you insist on having that many bars on the plot--there are only so many pixels on the screen.

The only other idea is you could try to rotate the text 90 degrees so as to write vertically--but then yhou'll not have sufficient room in the smaller sections the other way, either.

Sometimes just try to cram too much into one figure...

[Bimal Ghimire]

Thank you so much.

[Bimal Ghimire]

https://www.mathworks.com/matlabcentral/answers/587501-stacked-bar-chart-and-writing-value-inside-each-bar-and-a-value-in-top-of-the-bar#comment_993497

for i=1:20
    A{i}=randi([100,1000]);
    B{i}=randi([100,300]);
    C{i}=randi([2,30]);
    D{i}=randi([2,30]);
    E{i}=randi([0,2]);
end
hold on;
index=10;
numNearbyCHs=20
for i=1:numNearbyCHs
    y=[A{i}/5,B{i}/5,C{i}*5,D{i}*5];
    bh = bar(i,y,'stacked','FaceColor', 'Flat');  
    
    % Choose a color map (using "lines" in this example)
    if i~=index
         colors =  mat2cell(lines(numel(bh)),ones(numel(bh),1), 3);
        set(bh, {'CData'}, colors) 
    else
       colors =  mat2cell(jet(numel(bh)),ones(numel(bh),1), 3); 
        set(bh, {'CData'}, colors) 
    end
    
    arrayfun(@(i) text(bh(i).XEndPoints,bh(i).YEndPoints,num2str(bh(i).YEndPoints.','%0.1f'), ...
               'verticalalignment','top','horizontalalign','center'),[1:numel(bh)])
    
         
           
              
end

I followed your statements but why bar garph is not showing every value of i. Apart from that, value of array E is not part

of the graph but I want to show on top of the stacked bar. How it can be done? Is there a way to adjust bar width according to the content?

Thank you once again for the earlier reply.

Answer 1

[dpb]

numNearbyCHs=20;
A=randi([100,1000],numNearbyCHs,1);
B=randi([100,300],numNearbyCHs,1);
C=randi([2,30],numNearbyCHs,1);
D=randi([2,30],numNearbyCHs,1);
E=randi([0,2],numNearbyCHs,1);
y=[A B C D].*[1/5 1/5 5 5];
hBar=bar(y,0.95,'stacked');  
arrayfun(@(i) text(hBar(i).XEndPoints,hBar(i).YEndPoints,num2str(hBar(i).YEndPoints.','%0.1f'), ...
               'verticalalignment','top','horizontalalign','center','fontsize',6,'color','w'), ...
               [1:numel(hBar)])
text(hBar(end).XEndPoints,hBar(end).YEndPoints,num2str(E,'%0.1f'), ...
'verticalalignment','bottom','horizontalalign','center','fontsize',6,'color','k')
xlim([0.25 20.75]), ylim([0 460])

results in

I'll let you go fix up the colors as wanted; with the default figure size even widening the barwidth to 0.95, minimizing the whitespace on the x axis and going to 6-pt font barely gets the text in the bar. Looks like could have raised ylim a little more, too.

But, the basic code to to do what asked for..."salt to suit!" :)

[Bimal Ghimire]

you saved me! Thank you so much!

[dpb]

Glad to help...have messed with bar a LOT over the years in forum to find workarounds -- it's much simpler now to do this since TMW finally exposed the needed properties/values. I'd like to think my ranting here about the poor user interface and missing feautres had some positive impact in getting that enhancement done! :)

[Bimal Ghimire]

I am new to matlab. I did not have sufficient time to explore matlab. Thank you so much for your kind help.