Fitting a curve and fit it in a "stacked" histogram

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ka chun yick 2020-2-15

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/505633-fitting-a-curve-and-fit-it-in-a-stacked-histogram

I tried to make a curve in a "stacked" histogram, In line 23 & 24, i added "data=[cntA' ,cntB' ,cntC'] & histfit(data,100,'kernel'). But this is a "stacked" histogram and everthing get crahed. Can you check for my code please?

yA = randn(1000,1)*7+15;
yB = randn(1000,1)*3+7;
yC = randn(1000,1)*4+30;
% specify number of bins and edges of those bins; this example evenly spaces bins
NumBins = 25;
BinEdges = linspace(0,50,25);
% use histcounts and specify your bins
cntA = histcounts(yA,'BinEdges',BinEdges);
cntB = histcounts(yB,'BinEdges',BinEdges);
cntC = histcounts(yC,'BinEdges',BinEdges);
% plot
figure(1); cla; hold on;
% convert bin edges into bin centers
b = BinEdges(1:end-1)+diff(BinEdges)/2
% use bar
bar(b,[cntA',cntB',cntC'],'stacked')
data=[cntA',cntB',cntC']
histfit(data,100,'kernel')