Plotting histogram with percentage
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Hi all,
Recently I had a csv that I want to import by
T = readtable('1.csv');
and plot by histogram
Any chance to display this histogram with indivudual percentage over each bar?
Class; Value; Class start; Class end;
1;8410;-0.039916738868;-0.032423677233;
2;78271;-0.032423677233;-0.024930615599;
3;501926;-0.024930615599;-0.017437553965;
4;149453;-0.017437553965;-0.009944492330;
5;342924;-0.009944492330;-0.002451430696;
6;546900;-0.002451430696;0.005041630939;
7;537726;0.005041630939;0.012534692573;
8;527320;0.012534692573;0.020027754207;
9;478488;0.020027754207;0.027520815842;
10;345973;0.027520815842;0.035013877476;
11;276272;0.035013877476;0.042506939111;
12;694253;0.042506939111;0.050000000745;
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Answers (1)
Rik
on 6 Jul 2020
You will have to insert those labels with the text function.
6 Comments
Rik
on 8 Jul 2020
You can either use the code Adam suggested, or look into what that function from the FEX is actually doing:
function histogramPercentage(x,fontSize)
h = histogram(x,'Visible', 'off');
[nelements,centers]= hist(x,h.NumBins);
percantages = 100 * nelements / sum(nelements);
bar(centers,nelements,'Facecolor',[0.4,0.7,0.9],'BarWidth',1);
for k = 1:numel(centers)
if percantages(k) ~= 0
text(centers(k),nelements(k),[sprintf('%.f',(percantages(k))) '%'],'HorizontalAlignment','center','VerticalAlignment','bottom','FontSize',fontSize);
end
end
So in short: you need the bin centers and the height. Then you can easily create the text objects in a loop.
Adam Danz
on 8 Jul 2020
Bin centers for bar chart can be computed using this appoach.
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