def interp_time_series(series, time=None, other=None):
""" Interpolate time series values on index of other
:param series: pandas Series
:param time: pandas DatetimeIndex or equivalent
:param other: pandas Series
:return:
"""
series_julian_time = Series(series.index.to_julian_date(), series.index)
if other is None:
try:
time = DatetimeIndex(time)
other_julian_time = Series(time.to_julian_date(), time)
except ValueError:
raise TypeError(
"'time' must either be or convertible into a DatetimeIndex")
except AttributeError:
raise ValueError("Either 'other' or 'time' must be passed")
else:
other_julian_time = Series(other.index.to_julian_date(), other.index)
time = other.index
# Interpolate values
value_interp = interp(other_julian_time.values, series_julian_time.values,
series.values)
return Series(data=value_interp, index=time)
