ChunkPlan

class of dascore.utils.chunk_plan

source

ChunkPlan(
    outputs: DataFrame ,
    members: DataFrame ,
    dim: str ,
    value: Any ,
    params: <class ’dict = ,
)-> None

A materialization-free description of a chunk operation.

Attributes

Parameter	Description
outputs	One row per output patch: {dim}_min/max/step for the chunked dimension, an output_id, and all carried columns (group attrs, dims, structural def keys, conflict-policed attrs).
members	Instruction rows binding outputs to sources: output_id, _patch_id, the exact {dim}_min/max trim for that member, and _modified (False when the member loads whole).
dim	The chunked dimension.
value	The requested chunk length (None for merge mode).
params	Resolved parameters (group attrs, tolerances, overlap, keep_partial, conflict, snap_coords, missing_dim) — recorded, not referencing config.