a5_fast
Fast Python bindings for the A5 discrete global grid system, powered by Rust and PyO3.
Installation
pip install a5_fast
Usage
import a5_fast
# Convert (lon, lat) to a cell index at resolution 5
cell = a5_fast.lonlat_to_cell(13.4, 52.5, 5)
# Get the centre of a cell
lon, lat = a5_fast.cell_to_lonlat(cell)
# Get the boundary polygon of a cell
boundary = a5_fast.cell_to_boundary(cell)
# Batch convert coordinates (flat list: [lon0, lat0, lon1, lat1, ...])
cells = a5_fast.lonlat_to_cell_batch([13.4, 52.5, -73.9, 40.7], 5)
# Traverse the hierarchy
parent = a5_fast.cell_to_parent(cell)
children = a5_fast.cell_to_children(cell)
# Neighbours within k hops
disk = a5_fast.grid_disk(cell, 1)
# Compact / uncompact cell sets
compacted = a5_fast.compact(cells)
expanded = a5_fast.uncompact(compacted, 5)
# Hex conversion
hex_str = a5_fast.u64_to_hex(cell)
cell = a5_fast.hex_to_u64(hex_str)
# Metadata
res = a5_fast.get_resolution(cell)
area = a5_fast.cell_area(5) # area in m² at resolution 5
n = a5_fast.get_num_cells(5) # total cells at resolution 5
base = a5_fast.get_res0_cells() # the 12 resolution-0 cells
License
MIT
1 maintainer
Release files for a5-fast 0.2.1
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Source distribution (sdist)
| File | Size | Uploaded | |
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| a5_fast-0.2.1.tar.gz | 7.5 kB | Details |
Built distributions (wheels)
Total release size: 3.2 MB
Release files / a5_fast-0.2.1.tar.gz
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| Size | 7.5 kB |
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| Size | 166.4 kB |
| Tags | CPython 3.13 Windows x86-64 |
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