Histogram fraction of total observations and fraction per unit width

I'm working on a HW problem and I am kind of stuck. I took a class in Matlab several semesters ago and am now in a class where our HW is exclusivly done in Matlab. I've been given a data set where I have to use that data to create a series of histograms. The first histogram is the number of observations over the measuered data, no problem. The second and third histograms ask that I take the given data and display the fraction of total observations over each interval, and display the fraction per unit width over each interval. Is there an easy way to go about doing this or am i going to have to resort to doing the math and creating my graphs?

[Mohan]

https://uk.mathworks.com/matlabcentral/answers/625118-what-is-the-code-for-bin-histogram-of-fraction-to-the-bin#answer_524273

Please refer to this answer, which will give you the fraction in histogram

Answer 1

[KSSV]

You can get the wanted information from histogram.

Example:

x = randn(1,100) ; % random data for demo 
h = histogram(x)

h = 
  Histogram with properties:

             Data: [-1.3555 0.7552 1.0002 -1.8729 -0.6261 0.4673 -0.4979 -0.5176 1.1454 -1.2476 1.6000 1.2608 0.5668 -0.1758 0.7651 -0.2759 -0.9973 -0.5760 -1.3655 1.2396 -0.5806 0.6480 0.0356 -0.6146 0.3910 -0.4373 -0.6452 1.4512 -0.0810 1.4027 … ]
           Values: [3 10 20 16 21 14 12 4]
          NumBins: 8
         BinEdges: [-2 -1.5000 -1 -0.5000 0 0.5000 1 1.5000 2]
         BinWidth: 0.5000
        BinLimits: [-2 2]
    Normalization: 'count'
        FaceColor: 'auto'
        EdgeColor: [0 0 0]

  Show all properties

%  fraction of total observations over each interval
h.Values/length(x)

ans = 1×8

0.0300 0.1000 0.2000 0.1600 0.2100 0.1400 0.1200 0.0400

[Steven Lord]

The Normalization name-value pair argument to histogram may also be of use. See the documentation page for more information on that argument and its values.

[Jacob Smith]

thanks

[KSSV]

Thanks is accepting/ voting the answer. :)