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Products of scales

Several scales as one multi-index.

scale_product 

scale_product(
    name: str = "",
    desc: str = "",
    keys: Mapping[str, str] | None = None,
    joint_weights: Any = None,
    **axes: NestedScale,
) -> ScaleProduct

Combine named scales into a product: scale_product(time=cal, space=gs).

Keys default to each axis's own key; when two collide, the axis names.

ScaleProduct dataclass

Named axes (each a named NestedScale) and one data key column per axis.

scale_axes 

scale_axes(x: ScaleProduct, axis: str | None = None)

All axes (name -> scale), or one axis.

product_size 

product_size(x: ScaleProduct) -> dict[str, Any]

Atoms per axis and the size of the (never materialised) product.

product_keys 

product_keys(x: ScaleProduct) -> dict[str, str]

Axis -> data key column.

product_frames 

product_frames(x: ScaleProduct) -> dict[str, list[str]]

product_weights 

product_weights(x: ScaleProduct) -> dict[str, list[str]]

product_coverage 

product_coverage(
    x: ScaleProduct, weight: str | None = None
) -> dict[str, float]