clr_basis {coda.base} | R Documentation |
Compute the transformation matrix to express a composition using the linearly dependant centered log-ratio coordinates.
clr_basis(dim)
dim |
number of parts |
matrix
Aitchison, J. (1986) The Statistical Analysis of Compositional Data. Monographs on Statistics and Applied Probability. Chapman & Hall Ltd., London (UK). 416p.
(B <- clr_basis(5)) # CLR coordinates are linearly dependant coordinates. (clr_coordinates <- coordinates(c(1,2,3,4,5), B)) # The sum of all coordinates equal to zero sum(clr_coordinates) < 1e-15