Initial release. Named-dimension arrays with coordinate-based indexing for R.
Variable - N-dimensional array with named dimensions and attributes.DataArray - Variable with attached coordinates for label-based access.Dataset - collection of aligned Variables on shared dimensions. Extract variables with $ or [[.ImplicitCoord - regular-grid coordinate defined by offset + step (zero memory, O(1) lookup). Slicing preserves implicitness when the subset is regular.ExplicitCoord - arbitrary coordinate values (numeric, Date, character, etc.).+, *, >, etc.) broadcast by dimension name, not position. Disjoint dimensions produce outer-product-style expansion.sel() - select by coordinate value (label-based, nearest-match for numeric).isel() - select by integer index (1-based).nd_mean(), nd_sum(), nd_min(), nd_max() - reduce along one or more named dimensions.as.data.frame() on DataArray produces long-format output (one row per cell) for use with ggplot2/dplyr.as_variable() convenience constructor from R arrays.