FisherR2Z function
Description
Fisher r to z transformation. FISHERR2Z(r) calculates the Fisher z-transformed value of r. The argument r must be greater than -1 and less than 1.
z is calculated as follows:
$$z = {1 \over 2} \ln \left({1+r \over 1-r}\right) $$
The argument r can be a real number or a matrix. When it is a matrix, the function returns a matrix with the same dimensions and with the FISHERR2Z function applied to all elements.
Examples
FISHERR2Z(0.8) returns 1.09861229
FISHERR2Z({0.8,0.6}) returns the matrix {1.098612288668,0.69314718056}
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