Build an in-memory C++ spatial index for fast viewport queries (gl_spatial_index)

Build an in-memory C++ spatial index for fast viewport queries (gl_spatial_index)

Usage

gl_spatial_index(data, grid_res = 64L, lon = NULL, lat = NULL)

Arguments

data

An sf, sfc, or data.frame with x/y or lon/lat.

grid_res

Grid resolution along each axis (default 64L, i.e. 4,096 spatial buckets).

lon

Optional longitude column name for data.frame.

lat

Optional latitude column name for data.frame.

Value

A gl_spatial_index object holding the C++ external pointer and dataset reference.