def test_from_tuple(self):
# numerical, step
c = UniformCoordinates1d.from_tuple((0, 10, 0.5))
assert c.start == 0.0
assert c.stop == 10.0
assert c.step == 0.5
# numerical, size
c = UniformCoordinates1d.from_tuple((0, 10, 20))
assert c.start == 0.0
assert c.stop == 10.0
assert c.size == 20
# datetime, step
c = UniformCoordinates1d.from_tuple(
("2018-01-01", "2018-01-04", "1,D"))
assert c.start == np.datetime64("2018-01-01")
assert c.stop == np.datetime64("2018-01-04")
assert c.step == np.timedelta64(1, "D")
# invalid
with pytest.raises(
ValueError,
match="UniformCoordinates1d.from_tuple expects a tuple"):
UniformCoordinates1d.from_tuple((0, 10))
with pytest.raises(
ValueError,
match="UniformCoordinates1d.from_tuple expects a tuple"):
UniformCoordinates1d.from_tuple(np.array([0, 10, 0.5]))
def test_from_tuple(self):
# numerical, step
c = UniformCoordinates1d.from_tuple((0, 10, 0.5))
assert c.start == 0.
assert c.stop == 10.
assert c.step == 0.5
# numerical, size
c = UniformCoordinates1d.from_tuple((0, 10, 20))
assert c.start == 0.
assert c.stop == 10.
assert c.size == 20
# datetime, step
c = UniformCoordinates1d.from_tuple(
('2018-01-01', '2018-01-04', '1,D'))
assert c.start == np.datetime64('2018-01-01')
assert c.stop == np.datetime64('2018-01-04')
assert c.step == np.timedelta64(1, 'D')
# invalid
with pytest.raises(
ValueError,
match=
"UniformCoordinates1d.from_tuple expects a tuple of \(start, stop, step/size\)"
):
UniformCoordinates1d.from_tuple((0, 10))
with pytest.raises(
ValueError,
match=
"UniformCoordinates1d.from_tuple expects a tuple of \(start, stop, step/size\)"
):
UniformCoordinates1d.from_tuple(np.array([0, 10, 0.5]))
def _coords_from_dict(d, order=None):
if sys.version < '3.6':
if order is None and len(d) > 1:
raise TypeError('order required')
if order is not None:
if set(order) != set(d):
raise ValueError("order %s does not match dims %s" %
(order, d))
else:
order = d.keys()
coords = []
for dim in order:
if isinstance(d[dim], Coordinates1d):
c = d[dim].copy(name=dim)
elif isinstance(d[dim], tuple):
c = UniformCoordinates1d.from_tuple(d[dim], name=dim)
else:
c = ArrayCoordinates1d(d[dim], name=dim)
coords.append(c)
return coords