from_index

method of dascore.io.index.catalog.PatchCatalog

source

from_index(
    index: Path ,
    root: pathlib._local.Path | upath.core.UPath[Path, UPath] ,
    snap = None,
)-> ‘PatchCatalog’

Catalog over an existing index, opened read-only.

Rows resolve against root, which may be remote. Nothing scans: an index scanned under another snap or max_shift raises rather than rescanning.