Calculate the coordinates of a composition with respect a given basis
coordinates(X, basis = "ilr")
coord(..., basis = "ilr")
alr_c(X)
clr_c(X)
ilr_c(X)
olr_c(X)compositional dataset. Either a matrix, a data.frame or a vector
basis used to calculate the coordinates. basis can be either a string or a matrix.
Accepted values for strings are: 'ilr' (default), 'clr', 'alr', 'pw', 'pc', 'pb' and 'cdp'. If basis is a matrix, it is expected
to have log-ratio basis given in columns.
components of the compositional data
Coordinates of composition X with respect the given basis.
coordinates function calculates the coordinates of a compositiona w.r.t. a given basis. `basis` parameter is
used to set the basis, it can be either a matrix defining the log-contrasts in columns or a string defining some well-known
log-contrast: 'alr' 'clr', 'ilr', 'pw', 'pc', 'pb' and 'cdp', for the additive log-ratio, centered log-ratio, isometric log-ratio,
pairwise log-ratio, clr principal components, clr principal balances or default's CoDaPack balances respectively.
See functions ilr_basis, alr_basis,
clr_basis, sbp_basis
to define different compositional basis.
See function composition to obtain details on how to calculate
a compositions from given coordinates.
# Default ilr given by ilr_basis(5) is given
coordinates(1:5)
#> ilr1 ilr2 ilr3 ilr4
#> -0.4901291 -0.6140370 -0.6833297 -0.7288906
B = ilr_basis(5)
coordinates(1:5, B)
#> ilr1 ilr2 ilr3 ilr4
#> -0.4901291 -0.6140370 -0.6833297 -0.7288906