def test_as_discrete(self):
table = self.data
domain = table.domain
tr = AsCategorical()
dtr = []
for v in domain.variables:
vtr = apply_reinterpret(v, tr, table_column_data(table, v))
dtr.append(vtr)
tdomain = Domain(dtr)
ttable = table.transform(tdomain)
assert_array_equal(
ttable.X,
np.array([
[0, 2, 2, 1],
[1, 1, 3, 2],
[2, 0, 1, 3],
[1, 0, 0, 0],
],
dtype=float))
self.assertEqual(tdomain["A"].values, ("a", "b", "c"))
self.assertEqual(tdomain["B"].values, ("0", "1", "2"))
self.assertEqual(tdomain["C"].values, ("0.0", "0.2", "0.25", "1.25"))
self.assertEqual(tdomain["D"].values,
("1970-01-01 00:00:00", "1970-01-01 00:03:00",
"1970-01-01 00:06:00", "1970-01-01 00:12:00"))
def test_reinterpret_string(self):
table = self.data_str
domain = table.domain
tvars = []
for v in domain.metas:
for tr in [AsContinuous(), AsCategorical(), AsTime(), AsString()]:
tr = apply_reinterpret(v, tr, table_column_data(table, v))
tvars.append(tr)
tdomain = Domain([], metas=tvars)
ttable = table.transform(tdomain)
assert_array_nanequal(
ttable.metas,
np.array([
[0.1, 0., np.nan, "0.1", 2010., 0., 1262304000., "2010"],
[1.0, 1., np.nan, "1.0", 2020., 1., 1577836800., "2020"],
],
dtype=object))
def test_as_continuous(self):
table = self.data
domain = table.domain
tr = AsContinuous()
dtr = []
for v in domain.variables:
vtr = apply_reinterpret(v, tr, table_column_data(table, v))
dtr.append(vtr)
ttable = table.transform(Domain(dtr))
assert_array_equal(
ttable.X,
np.array([
[np.nan, 2, 0.25, 180],
[np.nan, 1, 1.25, 360],
[np.nan, 0, 0.20, 720],
[np.nan, 0, 0.00, 000],
],
dtype=float))
def test_as_string(self):
table = self.data
domain = table.domain
tr = AsString()
dtr = []
for v in domain.variables:
vtr = apply_reinterpret(v, tr, table_column_data(table, v))
dtr.append(vtr)
ttable = table.transform(Domain([], [], dtr))
assert_array_equal(
ttable.metas,
np.array([
["a", "2", "0.25", "00:03:00"],
["b", "1", "1.25", "00:06:00"],
["c", "0", "0.2", "00:12:00"],
["b", "0", "0.0", "00:00:00"],
],
dtype=object))
def test_as_time(self):
# this test only test type of format that can be string, continuous and discrete
# correctness of time formats is already tested in TimeVariable module
d = TimeVariable("_").parse_exact_iso
times = (
["07.02.2022", "18.04.2021"], # date only
["07.02.2022 01:02:03", "18.04.2021 01:02:03"], # datetime
["010203", "010203"], # time
["02-07", "04-18"],
)
formats = ["25.11.2021", "25.11.2021 00:00:00", "000000", "11-25"]
expected = [
[d("2022-02-07"), d("2021-04-18")],
[d("2022-02-07 01:02:03"),
d("2021-04-18 01:02:03")],
[d("01:02:03"), d("01:02:03")],
[d("1900-02-07"), d("1900-04-18")],
]
variables = [StringVariable(f"s{i}") for i in range(len(times))]
variables += [
DiscreteVariable(f"d{i}", values=t) for i, t in enumerate(times)
]
domain = Domain([], metas=variables)
metas = [t for t in times] + [list(range(len(x))) for x in times]
table = Table(domain,
np.empty((len(times[0]), 0)),
metas=np.array(metas).transpose())
tr = AsTime()
dtr = []
for v, f in zip(domain.metas, chain(formats, formats)):
strp = StrpTime(f, *TimeVariable.ADDITIONAL_FORMATS[f])
vtr = apply_transform_var(
apply_reinterpret(v, tr, table_column_data(table, v)), [strp])
dtr.append(vtr)
ttable = table.transform(Domain([], metas=dtr))
assert_array_equal(
ttable.metas,
np.array(list(chain(expected, expected)), dtype=float).transpose())