def to_timestamp(self, freq=None, how='start'):
"""
Cast to DatetimeIndex
Parameters
----------
freq : string or DateOffset, default 'D'
Target frequency
how : {'s', 'e', 'start', 'end'}
Returns
-------
DatetimeIndex
"""
if freq is None:
base, mult = _gfc(self.freq)
new_data = self
else:
base, mult = _gfc(freq)
new_data = self.asfreq(freq, how)
if mult != 1:
raise ValueError('Only mult == 1 supported')
new_data = lib.periodarr_to_dt64arr(new_data.values, base)
return DatetimeIndex(new_data, freq='infer')
def to_timestamp(self, freq="D", how="start"):
"""
Cast to datetimeindex of timestamps, at *beginning* of period
Parameters
----------
how : {'s', 'e', 'start', 'end'}
Returns
-------
DatetimeIndex
"""
base, mult = _gfc(freq)
new_data = self.asfreq(freq, how)
new_data = lib.periodarr_to_dt64arr(new_data.values, base, mult)
ts_freq = _period_rule_to_timestamp_rule(self.freq, how=how)
return DatetimeIndex(new_data, freq=ts_freq)
