Function Reference: wblinv

statistics: x = wblinv (p)
statistics: x = wblinv (p, lambda)
statistics: x = wblinv (p, lambda, k)

Inverse of the Weibull cumulative distribution function (iCDF).

For each element of p, compute the quantile (the inverse of the CDF) of the Weibull distribution with scale parameter lambda and shape parameter k. The size of x is the common size of p, lambda, and k. A scalar input functions as a constant matrix of the same size as the other inputs.

Default values are lambda = 1, k = 1.

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

See also: wblcdf, wblpdf, wblrnd, wblstat, wblplot

Source Code: wblinv

Example: 1

  

 ## Plot various iCDFs from the Weibull distribution
 p = 0.001:0.001:0.999;
 x1 = wblinv (p, 1, 0.5);
 x2 = wblinv (p, 1, 1);
 x3 = wblinv (p, 1, 1.5);
 x4 = wblinv (p, 1, 5);
 plot (p, x1, "-b", p, x2, "-r", p, x3, "-m", p, x4, "-g")
 ylim ([0, 2.5])
 grid on
 legend ({"λ = 1, k = 0.5", "λ = 1, k = 1",  ...
          "λ = 1, k = 1.5", "λ = 1, k = 5"}, "location", "northwest")
 title ("Weibull iCDF")
 xlabel ("probability")
 ylabel ("x")
plotted figure