Display the quotient of two histograms

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abc abc 2016-5-12

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评论： Walter Roberson 2016-5-12

Hi, i have two histograms of X and Y and what i would like to do this if it is possible :

i would like to display an histogram which will be the quotient of the two histograms. Of course i have the same borders for the two sides.

Any idea ?

Thanks a lot !

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Walter Roberson 2016-5-12

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If you are using the newer histogram function, then access the Values properties of the two, calculate the ratios, and use bar() to draw the result.

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abc abc 2016-5-12

But the problem is X and Y are matrix but have no the same dimensions so i can't write X./Y. However i think i can do countsX/countsY ?

Walter Roberson 2016-5-12

在 MATLAB Online 中打开

   subplot(1,3,1);
   h1 = histogram(rand(1,100).^2, 15);
   h1_edges = h1.BinEdges;
   h1_cents = mean([h1_edges(1:end-1); h1_edges(2:end)]);
   subplot(1,3,2);
   h2 = histogram(randn(1,100).^2, 15);
   ratio = h1.Values ./ h2.Values;
   subplot(1,3,3);
   bar(h1_cents, ratio);

Make sure they have the same number of bins.

Also, the above is not a great example because the range of the second histogram is wider, so the bins do not align. Or perhaps it is a good example, as it shows the danger of just taking the ratio of the bins instead of making sure that the bins are for the same range.

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