PERMANOVA: Ginv – R documentation

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Ginv

G inverse

Calculates the g-inverse of a squared matrix using the eigen decomposition and removing the eigenvalues smaller than a tolerance.

Ginv(X, tol = sqrt(.Machine$double.eps))

`X`	Matrix to calculate the g-inverse.
`tol`	Tolerance.

The function is useful to avoid singularities.

Returns the g-inverse.

Jose Luis Vicente-Villardon

data(iris)
x=as.matrix(iris[,1:4])
S= t(x) 
Ginv(S)

Multivariate Analysis of Variance Based on Distances and Permutations

v0.1.0

GPL (>= 2)

Authors

Laura Vicente-Gonzalez, Jose Luis Vicente-Villardon

Initial release