Statistics: poisspdf

### Function Reference: `poisspdf`

statistics: y = poisspdf (x, lambda)

Poisson probability density function (PDF).

For each element of x, compute the probability density function (PDF) of the Poisson distribution with rate parameter lambda. The size of y is the common size of x and lambda. A scalar input functions as a constant matrix of the same size as the other inputs.

Further information about the Poisson distribution can be found at https://en.wikipedia.org/wiki/Poisson_distribution

See also: poisscdf, poissinv, poissrnd, poissfit, poisslike, poisstat

Source Code: poisspdf

### Example: 1

     ## Plot various PDFs from the Poisson distribution
     x = 0:20;
     y1 = poisspdf (x, 1);
     y2 = poisspdf (x, 4);
     y3 = poisspdf (x, 10);
     plot (x, y1, "*b", x, y2, "*g", x, y3, "*r")
     grid on
     ylim ([0, 0.4])
     legend ({"λ = 1", "λ = 4", "λ = 10"}, "location", "northeast")
     title ("Poisson PDF")
     xlabel ("values in x (number of occurences)")
     ylabel ("density")