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Estimation of the value of
alfa.profile(x, a = seq(-1, 1, by = 0.01))
A matrix with the compositional data. Zero values are not allowed.
A grid of values of
A list including:
The chosen value of
An asympotic 95% confidence interval computed from the log-likelihood ratio test.
For every value of
Tsagris M.T., Preston S. and Wood A.T.A. (2011). A data-based power transformation for compositional data. In Proceedings of the 4th Compositional Data Analysis Workshop, Girona, Spain.
# NOT RUN {
x <- as.matrix(iris[, 1:4])
x <- x / rowSums(x)
alfa.tune(x)
alfa.profile(x)
# }
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