The cross product of the component leaftables: one row per tuple of
component atoms, with each axis's key column named by product_keys()
and its frame columns prefixed "<axis>.".
product_atoms(x, limit = 1e+06)A ScaleProduct.
Maximum number of rows to build. Exceeding it is an error that reports the size, rather than a very long wait.
A data.frame with product_size(x)$total rows.
This is guarded on purpose. An hourly calendar crossed with NUTS3 is
~12.9M rows; the whole point of a product is that its atoms exist
implicitly, and conversion never needs them realised (see
recast_scale()). Ask for them only when you actually want the grid.
p <- scale_product(a = scale_example(), b = scale_example2())
head(product_atoms(p))
#> unit a.sector a.class a.group period b.era
#> 1 U1 P G1 G1 p1 E1
#> 2 U2 P G1 G1 p1 E1
#> 3 U3 P G2 GB p1 E1
#> 4 U4 P G2 GB p1 E1
#> 5 U5 S S1 GB p1 E1
#> 6 U6 S S1 GC p1 E1