"""
Convert two-digit year to four-digit year.
"""
[docs]
def yr2year(yr):
"""
Convert two-digit year to four-digit year.
Parameters
----------
yr : int or array-like
2-digit year (e.g. 01).
Returns
-------
int or ndarray
4-digit year (e.g. 2001). yr+2000 if yr<80, else yr+1900.
Notes
-----
Heritage from geodesy convention (GPS era). See examples.
Examples
--------
>>> import pyacs
>>> pyacs.yr2year(96)
>>> 1996
>>> pyacs.yr2year(11)
>>> 2011
"""
import numpy as np
if isinstance(yr, list):
yr=np.array(yr)
if isinstance(yr, np.ndarray):
year=np.array(list(map(yr2year,yr)))
else:
if yr<80:year=yr+2000
else:year=yr+1900
return(year)