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Extended datetime for the gnss analysis.

Project description

gnsstime is an extended datetime for the gnss analysis.

Requirements

  • Python 3.3 or later (not support 2.x)

History

0.0.3 (2014-12-04)

  • first release

0.0.4 (2014-12-07)

  • bug fix

0.0.5 (2014-12-09)

  • added ‘gpscal’ to the module function.

0.0.6 (2015-12-01)

  • added a new leapsec.
  • modified julian day (mjd) support. added ‘mjd2date’, ‘from_mjd’, and a property ‘mjd’.

0.0.8 (2015-12-03)

  • fixed bug of ‘gpst’. The plus-minus sign was incorrect.

0.0.9 (2021-04-25)

  • fixed timezone problem.

Example

>>> import gnsstime as gt
>>> gt1 = gt.gnsstime(2011, 1, 1)
>>> print("gpscal: show gps calendar (doy, gpsw, gpswd)")
>>> print("gpscal()                        -> ", gt1.gpscal())
>>> print("gpscal(2013,12,31)              -> ", gt1.gpscal(2013, 12, 31))
>>> print("gpscal(ymd='2013/12/31')        -> ", gt1.gpscal(ymd="2013/12/31"))
>>> print("gpscal(dt.datetime(2013,12,31)) -> ", gt1.gpscal(dt.datetime(2013, 12, 31)))
>>> print("gpscal(year=2013, month=12, day=31) -> ", gt.gpscal(year=2013, month=12, day=31))
gpscal()                        ->  (1, 1616, 6)
gpscal(2013,12,31)              ->  (365, 1773, 2)
gpscal(ymd='2013/12/31')        ->  (365, 1773, 2)
gpscal(dt.datetime(2013,12,31)) ->  (365, 1773, 2)
gpscal(year=2013, month=12, day=31) ->  (365, 1773, 2)
gpscal(mjd=56657)               ->  (365, 1773, 2)

>>> print("date    :", gt1.isoformat())
>>> print("doy     :", gt1.doy)
>>> print("gpsw    :", gt1.gpsw)
>>> print("gpswd   :", gt1.gpswd)
>>> print("gpst    :", gt1.gpst.isoformat())
>>> print("leapsec :", gt1.leapsec)
>>> print("mjd     :", gt1.mjd)
date    : 2011-01-01T00:00:00
doy     : 1
gpsw    : 1616
gpswd   : 6
gpst    : 2011-01-01T00:00:15
leapsec : -15
mjd     : 55562.0

>>> import datetime as dt
>>> print("gt1 + dt.timedelta(days=2) :", (gt1 + dt.timedelta(days=2)).isoformat())
>>> print("gt1 - dt.timedelta(days=2) :", (gt1 - dt.timedelta(days=2)).isoformat())
gt1 + dt.timedelta(days=2) : 2011-01-03T00:00:00
gt1 - dt.timedelta(days=2) : 2010-12-30T00:00:00

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