The Error Function

Subchapters

The Error Function

Syntax	`erf(`x`)`
See Also	erfc , cnormal , ierf

Description
Returns an element-by-element approximation of the error function, where x is a real or double-precision matrix.

The error function is defined by



                        x     2

                  2    /    -t

     erf(x) = -------- |  e    dt

              sqrt(pi) /

                        0

Example




     ginit

     x = 0. : .1 : 3. 

     gtitle("Error Function")

     gplot(x, erf(x))

returns the following plot: