Histogram with counting number of "1" per bin

Question

MiauMiau 2015-5-4

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/215052-histogram-with-counting-number-of-1-per-bin

评论： Image Analyst 2015-5-5

Hi,

I have the following data: The intensity of a stimulus can be varied on a certain range, subjects have to say then for each intensity, if they can perceive the stimulus. Out of this data I would like to plot a histogram - and so far I have not found any existent Matlab function to do so (?).

So say the data would look like:

A = [100 120 80 85 130 145 160 95 105 110 115 135 150;
      0   1   0  0   1  1   1   1  1   1   0   0   1]

and I would like to split up the range [80,160] into 4 bins and count the number of 1's for each bin.

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Answer 1

Image Analyst 2015-5-4

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/215052-histogram-with-counting-number-of-1-per-bin#answer_177792

在 MATLAB Online 中打开

Try this:

A = [100 120 80 85 130 145 160 95 105 110 115 135 150];
counts = [ 0   1   0  0   1  1   1   1  1   1   0   0   1]
edges = linspace(80, 160, 5) % % 5 edges for 4 bins
myHistCounts = histcounts(A.*counts, edges)

works as long as your counts are only 0 and 1. You can have two of the same value, like 2 at 120 with a 1 as long as the 120's are separate, which I think they would be because each element is for one stimulus.