logncdf (Statistics Toolbox)

Lognormal cumulative distribution function.

Syntax

P = logncdf(X,MU,SIGMA)

Description

P = logncdf(X,MU,SIGMA) computes the lognormal cdf with mean MU and standard deviation SIGMA at the values in X.

The size of P is the common size of X, MU and SIGMA. A scalar input functions as a constant matrix of the same size as the other inputs.

The lognormal cdf is

Example

x = (0:0.2:10);
y = logncdf(x,0,1);
plot(x,y);grid;xlabel('x');ylabel('p')

Reference

Evans, M., N. Hastings, and B. Peacock, Statistical Distributions, Second Edition, John Wiley and Sons, 1993. p. 102-105.