DimArray

An ndarray carrying R labels (names / dimnames /

Usage

Source

DimArray()

axis_names / r_class) for faithful R ↔︎ Python round trips.

A received labeled vector or array homes as a DimArray; an unmodified echo restores every label in R (identical()). Attach labels explicitly to send a labeled value: names for a 1-D array, dimnames (plus optional axis_names, R’s names(dimnames(x))) for a matrix or n-D array, and r_class = "table" for R’s table class. The two label slots are mutually exclusive at send; axis_names requires dimnames and has one entry per axis.

Labels never propagate implicitly — any numpy operation that builds a new array (a transpose, arithmetic, a slice, a copy) drops them, so a reshaped or permuted array never inherits labels its data no longer matches.