Computes the Exponential CDF.
p = nisp_expcdf ( x ) p = nisp_expcdf ( x , lambda )
a matrix of doubles
a matrix of doubles
a matrix of doubles, the probability
This function computes the Exponential CDF.
Any scalar input argument is expanded to a matrix of doubles of the same size as the other input arguments.
Any optional input argument equal to the empty matrix will be set to its default value.
TODO : improve implementation (check inf, nan, etc...)
// http://en.wikipedia.org/wiki/Exponential_distribution scf(); x = linspace(0,5,1000); p = nisp_expcdf ( x , 0.5 ); plot(x,p, "r-" ); p = nisp_expcdf ( x , 1 ); plot(x,p, "m-" ); p = nisp_expcdf ( x , 1.5 ); plot(x,p, "c-" ); xtitle("Exponential Cumulated Distribution Function","X","P(X)"); legend(["lambda=0.5","lambda=","lambda=1.5"]);
Wikipedia, Exponential distribution function, http://en.wikipedia.org/wiki/Exponential_distribution