histogram function, bins and edges

Hi everybody,

I´m trying to plot some histogramms of different vectors, and therefore i need to determine as well the number of bins as the Edges for the histogramm. when changing either of them, Matlab changes the other one automatically, is there a way i can determine these numbers by myself?

    h = histogram(v,"NumBins",100,'Normalization','probability', "BinEdges", [5.4536e+03:1.2093e+05])

I tried to put everything in as input arguments, but the histogramm has different values:

h = 

    Histogram with properties:

               Data: [66001×1 double]
             Values: [1×115476 double]
            NumBins: 115476
           BinEdges: [1×115477 double]
           BinWidth: 1
          BinLimits: [5.4536e+03 1.2093e+05]
      Normalization: 'probability'
          FaceColor: 'auto'
          EdgeColor: [0 0 0]

[KSSV]

Why do you feel they are different? It is acting accordingly to your input.

[Timo Strotbaum]

Because in said NumBins should be 100, not 115476

Answer 1

[KSSV]

If you want 100 bins use:

    h = histogram(v,"NumBins",100,'Normalization','probability', "BinEdges", linspace(5.4536e+03,1.2093e+05,101)) ;

[Adam Danz]

In this case, "NumBins" is being ignored. Either use NumBins or BinEdges.

Here's an example where NumBins=2 but there are 100 bins defined by BinEdges.

h = histogram(rand(1,1000), "NumBins", 2, "BinEdges", linspace(0, 1, 101));