def test_get_res0_indexes():
out = h3.get_res0_indexes()
assert len(out) == 122
# subset
pentagons = h3.get_pentagon_indexes(0)
assert pentagons < out
# all valid
assert all(map(h3.h3_is_valid, out))
# resolution
assert all(map(
lambda h: h3.h3_get_resolution(h) == 0,
out
))
# verify a few concrete cells
sub = {
'8001fffffffffff',
'8003fffffffffff',
'8005fffffffffff',
}
assert sub < out
def test_cell_perimiter_calculations():
resolutions = [0, 1]
for r in resolutions:
cells = h3.uncompact(h3.get_res0_indexes(), r)
for h in cells:
for unit in ['rads', 'm', 'km']:
v1 = cell_perimiter1(h, unit)
v2 = cell_perimiter2(h, unit)
assert v1 == pytest.approx(v2)
#!/usr/bin/env python3
import h3
base_cells = h3.get_res0_indexes()
all_cells = []
for base_cell in base_cells:
res5_cells = h3.h3_to_children(base_cell, 4)
all_cells += res5_cells
with open("h3_4_index.txt", "w") as fd:
for cell in all_cells:
fd.write(f"{cell}\n")