sdc-catchment 0.1.0

Floating catchment area spatial accessibility (2SFCA, E2SFCA, and variants)

sdc-catchment

Floating catchment area (FCA) spatial-accessibility metrics — 2SFCA, E2SFCA, KD2SFCA, 3SFCA, modified-2SFCA, balanced FCA, and commute-based FCA, all as parameter variations of a single catchment_ratio().

Part of the Social Data Commons toolkit. Extracted from sdc_core.catchment; the Python replacement for the R catchment package.

Install

uv add sdc-catchment   # or: pip install sdc-catchment

Public API

• catchment_ratio — accessibility ratio under a chosen FCA variant.
• catchment_weight — distance-decay weight matrix builder.
• catchment_connections / catchment_network — provider/consumer connectivity.
• euclidean_cost — pairwise Euclidean cost matrix.
• KERNELS, WeightSpec — kernel registry and weight-spec type.

See the documentation.