Showing content from http://cran.rstudio.com/web/packages/Rcpp/../RcppHMM/../Rcpp/../coda.base/vignettes/features.R below:
## ----setup, include = FALSE--------------------------------------------------- knitr::opts_chunk$set( collapse = TRUE, comment = "#>" ) ## ----------------------------------------------------------------------------- library(coda.base) ## ----------------------------------------------------------------------------- nP = 6 nO = 8 set.seed(1) X = matrix(rlnorm(nP * nO), ncol = nP, nrow = nO) colnames(X) = paste0('P', 1:nP) rownames(X) = paste0('O', 1:nO) X ## ----------------------------------------------------------------------------- center(X) ## ----------------------------------------------------------------------------- variation_array(X) ## ----------------------------------------------------------------------------- dist(X, method = 'aitchison') ## ----------------------------------------------------------------------------- coordinates(X) ## ----------------------------------------------------------------------------- ilr_basis(nP) ## ----------------------------------------------------------------------------- all.equal(as.numeric(coordinates(X, 'ilr')), as.numeric(log(X) %*% ilr_basis(nP)))
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