ERFINV Inverse Error Function

Usage

Computes the inverse error function for each element of x. The erf function takes only a single argument

  y = erfinv(x)

where x is either a float or double array. The output vector y is the same size (and type) as x. For values outside the interval [-1, 1] function returns NaN.

Example

Here is a plot of the erf function over the range [-.9,.9].

--> x = linspace(-.9,.9,100);
--> y = erfinv(x);
--> plot(x,y); xlabel('x'); ylabel('erfinv(x)');

which results in the following plot.