Spatial tools: tl

Assign transcripts to cells, find point-polygon overlaps, and aggregate transcripts into a cells-by-genes count matrix on the GPU.

tl.assign_points(points, polygons, *[, ...])	Assign each point to one polygon.
tl.overlap_pairs(points, polygons, *[, ...])	Return all matching (point_idx, polygon_idx) pairs.
tl.aggregate_to_cells(batches, polygons, ...)	Aggregate transcript batches into one GPU-resident (cells × genes) CSR.
tl.CSRMatrix(indptr, indices, data, shape)	CSR matrix backed by CuPy, CUDA PyTorch, or NumPy arrays.