Centered log-ratio functions
clr(x.f, ...)# S3 method for default
clr(x.f, base = exp(1), tol = .Machine$double.eps,
...)
# S3 method for matrix
clr(x.f, mar = 2, ...)
# S3 method for data.frame
clr(x.f, mar = 2, ...)
input data
pass through arguments
base for log transformation
tolerance for a numerical zero
margin to apply the transformation (rows: 1 or cols: 2)