vlt.math.skewgauss

  SKEWGAUSS - calculate the skew gaussian function

  Y = SKEWGAUSS(X, P)

  Evaluates 
     Y = a+b*exp((x-c).^2/(2*d^2))*(1+erf(e*(x-c)/sqrt(2)));

  a is an offset parameter; b is a height parameter above the offset;
  c is the peak location; d is the width; e is the degree of skewness (0 is none)

  The parameters are specified in a vector P = [a b c d e]

  See also: vlt.fit.skewgaussfit_constraints