def _maybe_resample(series, ax, kwargs):
# resample against axes freq if necessary
freq, ax_freq = _get_freq(ax, series)
if freq is None: # pragma: no cover
raise ValueError('Cannot use dynamic axis without frequency info')
# Convert DatetimeIndex to PeriodIndex
if isinstance(series.index, ABCDatetimeIndex):
series = series.to_period(freq=freq)
if ax_freq is not None and freq != ax_freq:
if is_superperiod(freq, ax_freq): # upsample input
series = series.copy()
series.index = series.index.asfreq(ax_freq, how='s')
freq = ax_freq
elif _is_sup(freq, ax_freq): # one is weekly
how = kwargs.pop('how', 'last')
series = getattr(series.resample('D'), how)().dropna()
series = getattr(series.resample(ax_freq), how)().dropna()
freq = ax_freq
elif is_subperiod(freq, ax_freq) or _is_sub(freq, ax_freq):
_upsample_others(ax, freq, kwargs)
else: # pragma: no cover
raise ValueError('Incompatible frequency conversion')
return freq, series
def _maybe_resample(series, ax, kwargs):
# resample against axes freq if necessary
freq, ax_freq = _get_freq(ax, series)
if freq is None: # pragma: no cover
raise ValueError("Cannot use dynamic axis without frequency info")
# Convert DatetimeIndex to PeriodIndex
if isinstance(series.index, ABCDatetimeIndex):
series = series.to_period(freq=freq)
if ax_freq is not None and freq != ax_freq:
if is_superperiod(freq, ax_freq): # upsample input
series = series.copy()
series.index = series.index.asfreq(ax_freq, how="s")
freq = ax_freq
elif _is_sup(freq, ax_freq): # one is weekly
how = kwargs.pop("how", "last")
series = getattr(series.resample("D"), how)().dropna()
series = getattr(series.resample(ax_freq), how)().dropna()
freq = ax_freq
elif is_subperiod(freq, ax_freq) or _is_sub(freq, ax_freq):
_upsample_others(ax, freq, kwargs)
else: # pragma: no cover
raise ValueError("Incompatible frequency conversion")
return freq, series
def test_is_superperiod_subperiod():
# input validation
assert not (is_superperiod(offsets.YearEnd(), None))
assert not (is_subperiod(offsets.MonthEnd(), None))
assert not (is_superperiod(None, offsets.YearEnd()))
assert not (is_subperiod(None, offsets.MonthEnd()))
assert not (is_superperiod(None, None))
assert not (is_subperiod(None, None))
assert (is_superperiod(offsets.YearEnd(), offsets.MonthEnd()))
assert (is_subperiod(offsets.MonthEnd(), offsets.YearEnd()))
assert (is_superperiod(offsets.Hour(), offsets.Minute()))
assert (is_subperiod(offsets.Minute(), offsets.Hour()))
assert (is_superperiod(offsets.Second(), offsets.Milli()))
assert (is_subperiod(offsets.Milli(), offsets.Second()))
assert (is_superperiod(offsets.Milli(), offsets.Micro()))
assert (is_subperiod(offsets.Micro(), offsets.Milli()))
assert (is_superperiod(offsets.Micro(), offsets.Nano()))
assert (is_subperiod(offsets.Nano(), offsets.Micro()))
def test_is_superperiod_subperiod():
# input validation
assert not (is_superperiod(offsets.YearEnd(), None))
assert not (is_subperiod(offsets.MonthEnd(), None))
assert not (is_superperiod(None, offsets.YearEnd()))
assert not (is_subperiod(None, offsets.MonthEnd()))
assert not (is_superperiod(None, None))
assert not (is_subperiod(None, None))
assert (is_superperiod(offsets.YearEnd(), offsets.MonthEnd()))
assert (is_subperiod(offsets.MonthEnd(), offsets.YearEnd()))
assert (is_superperiod(offsets.Hour(), offsets.Minute()))
assert (is_subperiod(offsets.Minute(), offsets.Hour()))
assert (is_superperiod(offsets.Second(), offsets.Milli()))
assert (is_subperiod(offsets.Milli(), offsets.Second()))
assert (is_superperiod(offsets.Milli(), offsets.Micro()))
assert (is_subperiod(offsets.Micro(), offsets.Milli()))
assert (is_superperiod(offsets.Micro(), offsets.Nano()))
assert (is_subperiod(offsets.Nano(), offsets.Micro()))
def _is_sub(f1, f2):
return (f1.startswith("W")
and is_subperiod("D", f2)) or (f2.startswith("W")
and is_subperiod(f1, "D"))
def _is_sub(f1, f2):
return ((f1.startswith('W') and is_subperiod('D', f2))
or (f2.startswith('W') and is_subperiod(f1, 'D')))
def test_super_sub_symmetry(p1, p2, expected):
assert is_superperiod(p1, p2) is expected
assert is_subperiod(p2, p1) is expected
def test_super_sub_symmetry(p1, p2, expected):
assert is_superperiod(p1, p2) is expected
assert is_subperiod(p2, p1) is expected
def _is_sub(f1, f2):
return ((f1.startswith('W') and is_subperiod('D', f2)) or
(f2.startswith('W') and is_subperiod(f1, 'D')))
