### Function Reference: `plpdf`

statistics: y = plpdf (data, x, Fx)

Piecewise linear probability density function (PDF).

For each element of data, compute the probability density function (PDF) of the piecewise linear distribution with a vector of x values at which the CDF changes slope and a vector of CDF values Fx that correspond to each value in x. Both x and Fx must be vectors of the same size and at least 2-elements long. The size of p is the same as data.

Further information about the piecewise linear distribution can be found at https://en.wikipedia.org/wiki/Piecewise_linear_function

See also: plcdf, plinv, plrnd, plstat

Source Code: plpdf

### Example: 1

     ## Plot various PDFs from the Piecewise linear distribution
     data = 0:0.01:10;
     x1 = [0, 1, 3, 4, 7, 10];
     Fx1 = [0, 0.2, 0.5, 0.6, 0.7, 1];
     x2 = [0, 2, 5, 6, 7, 8];
     Fx2 = [0, 0.1, 0.3, 0.6, 0.9, 1];
     y1 = plpdf (data, x1, Fx1);
     y2 = plpdf (data, x2, Fx2);
     plot (data, y1, "-b", data, y2, "g")
     grid on
     ylim ([0, 0.6])
     xlim ([0, 10])
     legend ({"x1, Fx1", "x2, Fx2"}, "location", "northeast")
     title ("Piecewise linear CDF")
     xlabel ("values in data")
     ylabel ("density")