vlt.math.dog

  vlt.math.dog - difference of gaussians

  Y = vlt.math.dog(X,P_DOG)

  Given parameters for a difference of gaussians function:

     P_DOG = [ a1 b1 a2 b2],

  returns
  vlt.math.dog(X,P_DOG) = [ a1*exp(-X.^2/(2*b1^2) - a2*exp(-X.^2/(2*b2^2)) ]

  See also: vlt.math.dog2dogf