def test_roundtrip(self):
"Test roundtrip conversion (num2date <-> date2num) using 360_day and 365_day calendars."
# Pick a date and time outside of the range of the Julian calendar.
date = datetimex(-5000, 1, 1, 12)
for calendar in ["360_day", "365_day"]:
converter = self.converters[calendar]
self.assertEqual(date,
converter.num2date(converter.date2num(date)))
def test_dayofwk(self):
"Test computation of dayofwk in the 365_day calendar."
converter = self.converters["noleap"]
# Pick the date corresponding to the Julian day of 1.0 to test
# the transision from positive to negative Julian days.
julian_day = converter.date2num(datetimex(-4712, 1, 2, 12))
old_date = converter.num2date(julian_day)
for delta_year in range(1, 101): # 100 years cover several 7-year cycles
date = converter.num2date(julian_day - delta_year * 365)
# test that the day of the week changes by one every year (except
# for wrapping around every 7 years, of course)
if date.dayofwk == 6:
self.assertEqual(old_date.dayofwk, 0)
else:
self.assertEqual(old_date.dayofwk - date.dayofwk, 1)
old_date = date
def test_dayofwk(self):
"Test computation of dayofwk in the 365_day calendar."
converter = self.converters["noleap"]
# Pick the date corresponding to the Julian day of 1.0 to test
# the transision from positive to negative Julian days.
julian_day = converter.date2num(datetimex(-4712, 1, 2, 12))
old_date = converter.num2date(julian_day)
for delta_year in range(1, 101): # 100 years cover several 7-year cycles
date = converter.num2date(julian_day - delta_year * 365)
# test that the day of the week changes by one every year (except
# for wrapping around every 7 years, of course)
if date.dayofwk == 6:
self.assertEqual(old_date.dayofwk, 0)
else:
self.assertEqual(old_date.dayofwk - date.dayofwk, 1)
old_date = date
def runTest(self):
"""testing netcdftime"""
# test mixed julian/gregorian calendar
# check attributes.
self.assertTrue(self.cdftime_mixed.units == 'hours')
self.assertTrue(repr(self.cdftime_mixed.origin) == ' 1-01-01 00:00:00')
self.assertTrue(self.cdftime_mixed.unit_string == 'hours since 0001-01-01 00:00:00')
self.assertTrue(self.cdftime_mixed.calendar == 'standard')
# check date2num method. (date before switch)
d = datetime(1582,10,4,23)
t1 = self.cdftime_mixed.date2num(d)
assert_almost_equal(t1,13865687.0)
# check num2date method.
d2 = self.cdftime_mixed.num2date(t1)
self.assertTrue(str(d) == str(d2))
# this is a non-existant date, should raise ValueError.
d = datetime(1582,10,5,0)
self.assertRaises(ValueError, self.cdftime_mixed.date2num, d)
# check date2num/num2date with date after switch.
d = datetime(1582,10,15,0)
t2 = self.cdftime_mixed.date2num(d)
assert_almost_equal(t2,13865688.0)
d2 = self.cdftime_mixed.num2date(t2)
self.assertTrue(str(d) == str(d2))
# check day of year.
ndayr = d.timetuple()[7]
self.assertTrue(ndayr == 288)
# test using numpy arrays.
t = numpy.arange(t2,t2+240.0,12.)
t = numpy.reshape(t,(4,5))
d = self.cdftime_mixed.num2date(t)
self.assertTrue(d.shape == t.shape)
d_check = "1582-10-15 00:00:001582-10-15 12:00:001582-10-16 00:00:001582-10-16 12:00:001582-10-17 00:00:001582-10-17 12:00:001582-10-18 00:00:001582-10-18 12:00:001582-10-19 00:00:001582-10-19 12:00:001582-10-20 00:00:001582-10-20 12:00:001582-10-21 00:00:001582-10-21 12:00:001582-10-22 00:00:001582-10-22 12:00:001582-10-23 00:00:001582-10-23 12:00:001582-10-24 00:00:001582-10-24 12:00:00"
d2 = [str(dd) for dd in d.flat]
self.assertTrue(d_check == ''.join(d2))
# test proleptic gregorian calendar.
self.assertTrue(self.cdftime_pg.units == 'seconds')
self.assertTrue(repr(self.cdftime_pg.origin) == ' 1-01-01 00:00:00')
self.assertTrue(self.cdftime_pg.unit_string == 'seconds since 0001-01-01 00:00:00')
self.assertTrue(self.cdftime_pg.calendar == 'proleptic_gregorian')
# check date2num method.
d = datetime(1990,5,5,2,17)
t1 = numpy.around(self.cdftime_pg.date2num(d))
self.assertTrue(t1 == 62777470620.0)
# check num2date method.
d2 = self.cdftime_pg.num2date(t1)
self.assertTrue(str(d) == str(d2))
# check day of year.
ndayr = d.timetuple()[7]
self.assertTrue(ndayr == 125)
# check noleap calendar.
# this is a non-existant date, should raise ValueError.
self.assertRaises(ValueError,utime,'days since 1600-02-29 00:00:00',calendar='noleap')
self.assertTrue(self.cdftime_noleap.units == 'days')
self.assertTrue(repr(self.cdftime_noleap.origin) == '1600-02-28 00:00:00')
self.assertTrue(self.cdftime_noleap.unit_string == 'days since 1600-02-28 00:00:00')
self.assertTrue(self.cdftime_noleap.calendar == 'noleap')
assert_almost_equal(self.cdftime_noleap.date2num(self.cdftime_noleap.origin),0.0)
# check date2num method.
d1 = datetime(2000,2,28)
d2 = datetime(1600,2,28)
t1 = self.cdftime_noleap.date2num(d1)
t2 = self.cdftime_noleap.date2num(d2)
assert_almost_equal(t1,400*365.)
assert_almost_equal(t2,0.)
t12 = self.cdftime_noleap.date2num([d1,d2])
assert_almost_equal(t12, [400*365., 0])
# check num2date method.
d2 = self.cdftime_noleap.num2date(t1)
self.assertTrue(str(d1) == str(d2))
# check day of year.
ndayr = d2.timetuple()[7]
self.assertTrue(ndayr == 59)
# non-existant date, should raise ValueError.
date = datetime(2000,2,29)
self.assertRaises(ValueError,self.cdftime_noleap.date2num,date)
# check all_leap calendar.
self.assertTrue(self.cdftime_leap.units == 'days')
self.assertTrue(repr(self.cdftime_leap.origin) == '1600-02-29 00:00:00')
self.assertTrue(self.cdftime_leap.unit_string == 'days since 1600-02-29 00:00:00')
self.assertTrue(self.cdftime_leap.calendar == 'all_leap')
assert_almost_equal(self.cdftime_leap.date2num(self.cdftime_leap.origin),0.0)
# check date2num method.
d1 = datetime(2000,2,29)
d2 = datetime(1600,2,29)
t1 = self.cdftime_leap.date2num(d1)
t2 = self.cdftime_leap.date2num(d2)
assert_almost_equal(t1,400*366.)
assert_almost_equal(t2,0.)
# check num2date method.
d2 = self.cdftime_leap.num2date(t1)
self.assertTrue(str(d1) == str(d2))
# check day of year.
ndayr = d2.timetuple()[7]
self.assertTrue(ndayr == 60)
# double check date2num,num2date methods.
d = datetime(2000,12,31)
t1 = self.cdftime_mixed.date2num(d)
d2 = self.cdftime_mixed.num2date(t1)
self.assertTrue(str(d) == str(d2))
ndayr = d2.timetuple()[7]
self.assertTrue(ndayr == 366)
# check 360_day calendar.
self.assertTrue(self.cdftime_360day.units == 'days')
self.assertTrue(repr(self.cdftime_360day.origin) == '1600-02-30 00:00:00')
self.assertTrue(self.cdftime_360day.unit_string == 'days since 1600-02-30 00:00:00')
self.assertTrue(self.cdftime_360day.calendar == '360_day')
assert_almost_equal(self.cdftime_360day.date2num(self.cdftime_360day.origin),0.0)
# check date2num,num2date methods.
# use datetime from netcdftime, since this date doesn't
# exist in "normal" calendars.
d = datetimex(2000,2,30)
t1 = self.cdftime_360day.date2num(d)
assert_almost_equal(t1,360*400.)
d2 = self.cdftime_360day.num2date(t1)
assert_equal(str(d), str(d2))
# check day of year.
d = datetime(2001,12,30)
t = self.cdftime_360day.date2num(d)
assert_almost_equal(t,144660.0)
date = self.cdftime_360day.num2date(t)
self.assertTrue(str(d) == str(date))
ndayr = date.timetuple()[7]
self.assertTrue(ndayr == 360)
# Check fraction
d = datetime(1969, 12, 30, 12)
t = self.cdftime_360day.date2num(d)
date = self.cdftime_360day.num2date(t)
assert_equal(str(d), str(date))
# test proleptic julian calendar.
d = datetime(1858,11,17,12)
t = self.cdftime_jul.date2num(d)
assert_almost_equal(t,7528932.0)
d1 = datetime(1582,10,4,23)
d2 = datetime(1582,10,15,0)
assert_almost_equal(self.cdftime_jul.date2num(d1)+241.0,self.cdftime_jul.date2num(d2))
date = self.cdftime_jul.num2date(t)
self.assertTrue(str(d) == str(date))
# test julian day from date, date from julian day
d = datetime(1858,11,17)
mjd = JulianDayFromDate(d)
assert_almost_equal(mjd,2400000.5)
date = DateFromJulianDay(mjd)
self.assertTrue(str(date) == str(d))
# test iso 8601 units string
d = datetime(1970,1,1,1)
t = self.cdftime_iso.date2num(d)
assert_equal(numpy.around(t),3600)
# test fix for issue 75 (seconds hit 60 at end of month,
# day goes out of range).
t = 733498.999999
d = num2date(t,units='days since 0001-01-01 00:00:00')
assert_equal(str(d),'2009-04-01 00:00:00')
# Check equality testing
d1 = datetimex(1979,6,21,9,23,12)
d2 = datetime(1979,6,21,9,23,12)
assert(d1 == d2)
# check timezone offset
d = datetime(2012,2,29,15)
assert(self.cdftime_mixed.date2num(d)-self.cdftime_mixed_tz.date2num(d) == 6)
# Check comparisons with Python datetime types
d1 = num2date(0, 'days since 1000-01-01', 'standard')
d2 = datetime(2000, 1, 1)
d3 = num2date(0, 'days since 3000-01-01', 'standard')
assert d1 < d2
assert d2 < d3
def runTest(self):
"""testing netcdftime"""
# test mixed julian/gregorian calendar
# check attributes.
self.assertTrue(self.cdftime_mixed.units == 'hours')
self.assertTrue(
repr(self.cdftime_mixed.origin) == ' 1-01-01 00:00:00')
self.assertTrue(
self.cdftime_mixed.unit_string == 'hours since 0001-01-01 00:00:00')
self.assertTrue(self.cdftime_mixed.calendar == 'standard')
# check date2num method. (date before switch)
d = datetime(1582, 10, 4, 23)
t1 = self.cdftime_mixed.date2num(d)
assert_almost_equal(t1, 13865687.0)
# check num2date method.
d2 = self.cdftime_mixed.num2date(t1)
self.assertTrue(str(d) == str(d2))
# this is a non-existant date, should raise ValueError.
d = datetime(1582, 10, 5, 0)
self.assertRaises(ValueError, self.cdftime_mixed.date2num, d)
# check date2num/num2date with date after switch.
d = datetime(1582, 10, 15, 0)
t2 = self.cdftime_mixed.date2num(d)
assert_almost_equal(t2, 13865688.0)
d2 = self.cdftime_mixed.num2date(t2)
self.assertTrue(str(d) == str(d2))
# check day of year.
ndayr = d.timetuple()[7]
self.assertTrue(ndayr == 288)
# test using numpy arrays.
t = numpy.arange(t2, t2 + 240.0, 12.)
t = numpy.reshape(t, (4, 5))
d = self.cdftime_mixed.num2date(t)
self.assertTrue(d.shape == t.shape)
d_check = "1582-10-15 00:00:001582-10-15 12:00:001582-10-16 00:00:001582-10-16 12:00:001582-10-17 00:00:001582-10-17 12:00:001582-10-18 00:00:001582-10-18 12:00:001582-10-19 00:00:001582-10-19 12:00:001582-10-20 00:00:001582-10-20 12:00:001582-10-21 00:00:001582-10-21 12:00:001582-10-22 00:00:001582-10-22 12:00:001582-10-23 00:00:001582-10-23 12:00:001582-10-24 00:00:001582-10-24 12:00:00"
d2 = [str(dd) for dd in d.flat]
self.assertTrue(d_check == ''.join(d2))
# test julian calendar with numpy arrays
d = self.cdftime_julian.num2date(t)
self.assertTrue(d.shape == t.shape)
d_check = "1582-10-05 00:00:001582-10-05 12:00:001582-10-06 00:00:001582-10-06 12:00:001582-10-07 00:00:001582-10-07 12:00:001582-10-08 00:00:001582-10-08 12:00:001582-10-09 00:00:001582-10-09 12:00:001582-10-10 00:00:001582-10-10 12:00:001582-10-11 00:00:001582-10-11 12:00:001582-10-12 00:00:001582-10-12 12:00:001582-10-13 00:00:001582-10-13 12:00:001582-10-14 00:00:001582-10-14 12:00:00"
d2 = [str(dd) for dd in d.flat]
self.assertTrue(d_check == ''.join(d2))
# test proleptic gregorian calendar.
self.assertTrue(self.cdftime_pg.units == 'seconds')
self.assertTrue(repr(self.cdftime_pg.origin) == ' 1-01-01 00:00:00')
self.assertTrue(
self.cdftime_pg.unit_string == 'seconds since 0001-01-01 00:00:00')
self.assertTrue(self.cdftime_pg.calendar == 'proleptic_gregorian')
# check date2num method.
d = datetime(1990, 5, 5, 2, 17)
t1 = numpy.around(self.cdftime_pg.date2num(d))
self.assertTrue(t1 == 62777470620.0)
# check num2date method.
d2 = self.cdftime_pg.num2date(t1)
self.assertTrue(str(d) == str(d2))
# check day of year.
ndayr = d.timetuple()[7]
self.assertTrue(ndayr == 125)
# check noleap calendar.
# this is a non-existant date, should raise ValueError.
self.assertRaises(
ValueError, utime, 'days since 1600-02-29 00:00:00', calendar='noleap')
self.assertTrue(self.cdftime_noleap.units == 'days')
self.assertTrue(
repr(self.cdftime_noleap.origin) == '1600-02-28 00:00:00')
self.assertTrue(
self.cdftime_noleap.unit_string == 'days since 1600-02-28 00:00:00')
self.assertTrue(self.cdftime_noleap.calendar == 'noleap')
assert_almost_equal(
self.cdftime_noleap.date2num(self.cdftime_noleap.origin), 0.0)
# check date2num method.
d1 = datetime(2000, 2, 28)
d2 = datetime(1600, 2, 28)
t1 = self.cdftime_noleap.date2num(d1)
t2 = self.cdftime_noleap.date2num(d2)
assert_almost_equal(t1, 400 * 365.)
assert_almost_equal(t2, 0.)
t12 = self.cdftime_noleap.date2num([d1, d2])
assert_almost_equal(t12, [400 * 365., 0])
# check num2date method.
d2 = self.cdftime_noleap.num2date(t1)
self.assertTrue(str(d1) == str(d2))
# check day of year.
ndayr = d2.timetuple()[7]
self.assertTrue(ndayr == 59)
# non-existant date, should raise ValueError.
date = datetime(2000, 2, 29)
self.assertRaises(ValueError, self.cdftime_noleap.date2num, date)
# check all_leap calendar.
self.assertTrue(self.cdftime_leap.units == 'days')
self.assertTrue(
repr(self.cdftime_leap.origin) == '1600-02-29 00:00:00')
self.assertTrue(
self.cdftime_leap.unit_string == 'days since 1600-02-29 00:00:00')
self.assertTrue(self.cdftime_leap.calendar == 'all_leap')
assert_almost_equal(
self.cdftime_leap.date2num(self.cdftime_leap.origin), 0.0)
# check date2num method.
d1 = datetime(2000, 2, 29)
d2 = datetime(1600, 2, 29)
t1 = self.cdftime_leap.date2num(d1)
t2 = self.cdftime_leap.date2num(d2)
assert_almost_equal(t1, 400 * 366.)
assert_almost_equal(t2, 0.)
# check num2date method.
d2 = self.cdftime_leap.num2date(t1)
self.assertTrue(str(d1) == str(d2))
# check day of year.
ndayr = d2.timetuple()[7]
self.assertTrue(ndayr == 60)
# double check date2num,num2date methods.
d = datetime(2000, 12, 31)
t1 = self.cdftime_mixed.date2num(d)
d2 = self.cdftime_mixed.num2date(t1)
self.assertTrue(str(d) == str(d2))
ndayr = d2.timetuple()[7]
self.assertTrue(ndayr == 366)
# check 360_day calendar.
self.assertTrue(self.cdftime_360day.units == 'days')
self.assertTrue(
repr(self.cdftime_360day.origin) == '1600-02-30 00:00:00')
self.assertTrue(
self.cdftime_360day.unit_string == 'days since 1600-02-30 00:00:00')
self.assertTrue(self.cdftime_360day.calendar == '360_day')
assert_almost_equal(
self.cdftime_360day.date2num(self.cdftime_360day.origin), 0.0)
# check date2num,num2date methods.
# use datetime from netcdftime, since this date doesn't
# exist in "normal" calendars.
d = datetimex(2000, 2, 30)
t1 = self.cdftime_360day.date2num(d)
assert_almost_equal(t1, 360 * 400.)
d2 = self.cdftime_360day.num2date(t1)
assert_equal(str(d), str(d2))
# check day of year.
d = datetime(2001, 12, 30)
t = self.cdftime_360day.date2num(d)
assert_almost_equal(t, 144660.0)
date = self.cdftime_360day.num2date(t)
self.assertTrue(str(d) == str(date))
ndayr = date.timetuple()[7]
self.assertTrue(ndayr == 360)
# Check fraction
d = datetime(1969, 12, 30, 12)
t = self.cdftime_360day.date2num(d)
date = self.cdftime_360day.num2date(t)
assert_equal(str(d), str(date))
# test proleptic julian calendar.
d = datetime(1858, 11, 17, 12)
t = self.cdftime_jul.date2num(d)
assert_almost_equal(t, 7528932.0)
d1 = datetime(1582, 10, 4, 23)
d2 = datetime(1582, 10, 15, 0)
assert_almost_equal(
self.cdftime_jul.date2num(d1) + 241.0, self.cdftime_jul.date2num(d2))
date = self.cdftime_jul.num2date(t)
self.assertTrue(str(d) == str(date))
# test julian day from date, date from julian day
d = datetime(1858, 11, 17)
mjd = JulianDayFromDate(d)
assert_almost_equal(mjd, 2400000.5)
date = DateFromJulianDay(mjd)
self.assertTrue(str(date) == str(d))
# test iso 8601 units string
d = datetime(1970, 1, 1, 1)
t = self.cdftime_iso.date2num(d)
assert_equal(numpy.around(t), 3600)
# test fix for issue 75 (seconds hit 60 at end of month,
# day goes out of range).
t = 733499.0
d = num2date(t, units='days since 0001-01-01 00:00:00')
dateformat = '%Y-%m-%d %H:%M:%S'
assert_equal(d.strftime(dateformat), '2009-04-01 00:00:00')
# test edge case of issue 75 for numerical problems
for t in (733498.999, 733498.9999, 733498.99999, 733498.999999, 733498.9999999):
d = num2date(t, units='days since 0001-01-01 00:00:00')
t2 = date2num(d, units='days since 0001-01-01 00:00:00')
assert(abs(t2 - t) < 1e-5) # values should be less than second
# Check equality testing
d1 = datetimex(1979, 6, 21, 9, 23, 12)
d2 = datetime(1979, 6, 21, 9, 23, 12)
assert(d1 == d2)
# check timezone offset
d = datetime(2012, 2, 29, 15)
# mixed_tz is -6 hours from UTC, mixed is UTC so
# difference in elapsed time is 6 hours.
assert(self.cdftime_mixed_tz.date2num(
d) - self.cdftime_mixed.date2num(d) == 6)
# Check comparisons with Python datetime types
d1 = num2date(0, 'days since 1000-01-01', 'standard')
d2 = datetime(2000, 1, 1)
d3 = num2date(0, 'days since 3000-01-01', 'standard')
assert d1 < d2
assert d2 < d3
# check all comparisons
assert d1 != d2
assert d1 <= d2
assert d2 > d1
assert d2 >= d1
# check datetime hash
d1 = datetimex(1995, 1, 1)
d2 = datetime(1995, 1, 1)
d3 = datetimex(2001, 2, 30)
assert hash(d1) == hash(d1)
assert hash(d1) == hash(d2)
assert hash(d1) != hash(d3)
assert hash(d3) == hash(d3)
# check datetime immutability
# using assertRaises as a context manager
# only works with python >= 2.7 (issue #497).
#with self.assertRaises(AttributeError):
# d1.year = 1999
#with self.assertRaises(AttributeError):
# d1.month = 6
#with self.assertRaises(AttributeError):
# d1.day = 5
#with self.assertRaises(AttributeError):
# d1.hour = 10
#with self.assertRaises(AttributeError):
# d1.minute = 33
#with self.assertRaises(AttributeError):
# d1.second = 45
#with self.assertRaises(AttributeError):
# d1.dayofwk = 1
#with self.assertRaises(AttributeError):
# d1.dayofyr = 52
#with self.assertRaises(AttributeError):
# d1.format = '%Y'
try:
d1.year = 1999
d1.month = 6
d1.day = 5
d1.hour = 10
d1.minute = 33
d1.second = 45
d1.dayofwk = 1
d1.dayofyr = 52
d1.format = '%Y'
except AttributeError:
pass
# Check leading white space
self.assertEqual(
repr(self.cdftime_leading_space.origin), ' 850-01-01 00:00:00')
#issue 330
units = "seconds since 1970-01-01T00:00:00Z"
t = utime(units)
for n in range(10):
assert n == int(round(t.date2num(t.num2date(n))))
#issue 344
units = 'hours since 2013-12-12T12:00:00'
assert(1.0 == date2num(num2date(1.0, units), units))
# test rountrip accuracy
# also tests error found in issue #349
calendars=['standard', 'gregorian', 'proleptic_gregorian', 'noleap', 'julian',\
'all_leap', '365_day', '366_day', '360_day']
dateformat = '%Y-%m-%d %H:%M:%S'
dateref = datetime(2015,2,28,12)
ntimes = 1001
for calendar in calendars:
eps = 100.
units = 'microseconds since 1800-01-30 01:01:01'
microsecs1 = date2num(dateref,units,calendar=calendar)
for n in range(ntimes):
microsecs1 += 1.
date1 = num2date(microsecs1, units, calendar=calendar)
microsecs2 = date2num(date1, units, calendar=calendar)
date2 = num2date(microsecs2, units, calendar=calendar)
err = numpy.abs(microsecs1 - microsecs2)
assert(err < eps)
assert(date1.strftime(dateformat) == date2.strftime(dateformat))
units = 'milliseconds since 1800-01-30 01:01:01'
eps = 0.1
millisecs1 = date2num(dateref,units,calendar=calendar)
for n in range(ntimes):
millisecs1 += 0.001
date1 = num2date(millisecs1, units, calendar=calendar)
millisecs2 = date2num(date1, units, calendar=calendar)
date2 = num2date(millisecs2, units, calendar=calendar)
err = numpy.abs(millisecs1 - millisecs2)
assert(err < eps)
assert(date1.strftime(dateformat) == date2.strftime(dateformat))
eps = 1.e-4
units = 'seconds since 0001-01-30 01:01:01'
secs1 = date2num(dateref,units,calendar=calendar)
for n in range(ntimes):
secs1 += 0.1
date1 = num2date(secs1, units, calendar=calendar)
secs2 = date2num(date1, units, calendar=calendar)
date2 = num2date(secs2, units, calendar=calendar)
err = numpy.abs(secs1 - secs2)
assert(err < eps)
assert(date1.strftime(dateformat) == date2.strftime(dateformat))
eps = 1.e-5
units = 'minutes since 0001-01-30 01:01:01'
mins1 = date2num(dateref,units,calendar=calendar)
for n in range(ntimes):
mins1 += 0.01
date1 = num2date(mins1, units, calendar=calendar)
mins2 = date2num(date1, units, calendar=calendar)
date2 = num2date(mins2, units, calendar=calendar)
err = numpy.abs(mins1 - mins2)
assert(err < eps)
assert(date1.strftime(dateformat) == date2.strftime(dateformat))
eps = 1.e-5
units = 'hours since 0001-01-30 01:01:01'
hrs1 = date2num(dateref,units,calendar=calendar)
for n in range(ntimes):
hrs1 += 0.001
date1 = num2date(hrs1, units, calendar=calendar)
hrs2 = date2num(date1, units, calendar=calendar)
date2 = num2date(hrs2, units, calendar=calendar)
err = numpy.abs(hrs1 - hrs2)
assert(err < eps)
assert(date1.strftime(dateformat) == date2.strftime(dateformat))
eps = 1.e-5
units = 'days since 0001-01-30 01:01:01'
days1 = date2num(dateref,units,calendar=calendar)
for n in range(ntimes):
days1 += 0.00001
date1 = num2date(days1, units, calendar=calendar)
days2 = date2num(date1, units, calendar=calendar)
date2 = num2date(days2, units, calendar=calendar)
err = numpy.abs(days1 - days2)
assert(err < eps)
assert(date1.strftime(dateformat) == date2.strftime(dateformat))
# issue 353
assert (num2date(0, 'hours since 2000-01-01 0') ==
datetime(2000,1,1,0))
# issue 354
num1 = numpy.array([[0, 1], [2, 3]])
num2 = numpy.array([[0, 1], [2, 3]])
dates1 = num2date(num1, 'days since 0001-01-01')
dates2 = num2date(num2, 'days since 2001-01-01')
assert( dates1.shape == (2,2) )
assert( dates2.shape == (2,2) )
num1b = date2num(dates1, 'days since 0001-01-01')
num2b = date2num(dates2, 'days since 2001-01-01')
assert( num1b.shape == (2,2) )
assert( num2b.shape == (2,2) )
assert_almost_equal(num1,num1b)
assert_almost_equal(num2,num2b)
# issue 357 (make sure time zone offset in units done correctly)
# Denver time, 7 hours behind UTC
units = 'hours since 1682-10-15 -07:00 UTC'
# date after gregorian switch, python datetime used
date = datetime(1682,10,15) # assumed UTC
num = date2num(date,units)
# UTC is 7 hours ahead of units, so num should be 7
assert (num == 7)
assert (num2date(num, units) == date)
units = 'hours since 1482-10-15 -07:00 UTC'
# date before gregorian switch, netcdftime datetime used
date = datetime(1482,10,15)
num = date2num(date,units)
date2 = num2date(num, units)
assert (num == 7)
assert (date2.year == date.year)
assert (date2.month == date.month)
assert (date2.day == date.day)
assert (date2.hour == date.hour)
assert (date2.minute == date.minute)
assert (date2.second == date.second)
# issue 362: case insensitive calendars
self.assertTrue(self.cdftime_mixed_capcal.calendar == 'standard')
self.assertTrue(self.cdftime_noleap_capcal.calendar == 'noleap')
d = datetime(2015, 3, 4, 12, 18, 30)
units = 'days since 0001-01-01'
for cap_cal, low_cal in (('STANDARD', 'standard'),
('NoLeap', 'noleap'),
('Gregorian', 'gregorian'),
('ALL_LEAP', 'all_leap')):
d1 = date2num(d, units, cap_cal)
d2 = date2num(d, units, low_cal)
self.assertEqual(d1, d2)
self.assertEqual(num2date(d1, units, cap_cal),
num2date(d1, units, low_cal))
# issue 415
t = datetimex(2001, 12, 1, 2, 3, 4)
self.assertEqual(t, copy.deepcopy(t))
# issue 442
units = "days since 0000-01-01 00:00:00"
# this should fail (year zero not allowed with real-world calendars)
try:
date2num(datetime(1, 1, 1), units, calendar='standard')
except ValueError:
pass
# this should not fail (year zero allowed in 'fake' calendars)
t = date2num(datetime(1, 1, 1), units, calendar='360_day')
self.assertEqual(t, 360)
d = num2date(t, units, calendar='360_day')
self.assertEqual(d, datetimex(1,1,1))
d = num2date(0, units, calendar='360_day')
self.assertEqual(d, datetimex(0,1,1))
# list around missing dates in Gregorian calendar
# scalar
units = 'days since 0001-01-01 12:00:00'
t1 = date2num(datetime(1582, 10, 4), units, calendar='gregorian')
t2 = date2num(datetime(1582, 10, 15), units, calendar='gregorian')
self.assertEqual(t1+1, t2)
# list
t1, t2 = date2num([datetime(1582, 10, 4), datetime(1582, 10, 15)], units, calendar='gregorian')
self.assertEqual(t1+1, t2)
t1, t2 = date2num([datetime(1582, 10, 4), datetime(1582, 10, 15)], units, calendar='standard')
self.assertEqual(t1+1, t2)
# this should fail: days missing in Gregorian calendar
try:
t1, t2, t3 = date2num([datetime(1582, 10, 4), datetime(1582, 10, 10), datetime(1582, 10, 15)], units, calendar='standard')
except ValueError:
pass
def runTest(self):
"""testing netcdftime"""
# test mixed julian/gregorian calendar
# check attributes.
self.assertTrue(self.cdftime_mixed.units == 'hours')
self.assertTrue(
str(self.cdftime_mixed.origin) == ' 1-01-01 00:00:00')
self.assertTrue(self.cdftime_mixed.unit_string ==
'hours since 0001-01-01 00:00:00')
self.assertTrue(self.cdftime_mixed.calendar == 'standard')
# check date2num method. (date before switch)
d = datetime(1582, 10, 4, 23)
t1 = self.cdftime_mixed.date2num(d)
assert_almost_equal(t1, 13865687.0)
# check num2date method.
d2 = self.cdftime_mixed.num2date(t1)
self.assertTrue(str(d) == str(d2))
# this is a non-existant date, should raise ValueError.
d = datetime(1582, 10, 5, 0)
self.assertRaises(ValueError, self.cdftime_mixed.date2num, d)
# check date2num/num2date with date after switch.
d = datetime(1582, 10, 15, 0)
t2 = self.cdftime_mixed.date2num(d)
assert_almost_equal(t2, 13865688.0)
d2 = self.cdftime_mixed.num2date(t2)
self.assertTrue(str(d) == str(d2))
# check day of year.
ndayr = d.timetuple()[7]
self.assertTrue(ndayr == 288)
# test using numpy arrays.
t = numpy.arange(t2, t2 + 240.0, 12.)
t = numpy.reshape(t, (4, 5))
d = self.cdftime_mixed.num2date(t)
self.assertTrue(d.shape == t.shape)
d_check = "1582-10-15 00:00:001582-10-15 12:00:001582-10-16 00:00:001582-10-16 12:00:001582-10-17 00:00:001582-10-17 12:00:001582-10-18 00:00:001582-10-18 12:00:001582-10-19 00:00:001582-10-19 12:00:001582-10-20 00:00:001582-10-20 12:00:001582-10-21 00:00:001582-10-21 12:00:001582-10-22 00:00:001582-10-22 12:00:001582-10-23 00:00:001582-10-23 12:00:001582-10-24 00:00:001582-10-24 12:00:00"
d2 = [str(dd) for dd in d.flat]
self.assertTrue(d_check == ''.join(d2))
# test julian calendar with numpy arrays
d = self.cdftime_julian.num2date(t)
self.assertTrue(d.shape == t.shape)
d_check = "1582-10-05 00:00:001582-10-05 12:00:001582-10-06 00:00:001582-10-06 12:00:001582-10-07 00:00:001582-10-07 12:00:001582-10-08 00:00:001582-10-08 12:00:001582-10-09 00:00:001582-10-09 12:00:001582-10-10 00:00:001582-10-10 12:00:001582-10-11 00:00:001582-10-11 12:00:001582-10-12 00:00:001582-10-12 12:00:001582-10-13 00:00:001582-10-13 12:00:001582-10-14 00:00:001582-10-14 12:00:00"
d2 = [str(dd) for dd in d.flat]
self.assertTrue(d_check == ''.join(d2))
# test proleptic gregorian calendar.
self.assertTrue(self.cdftime_pg.units == 'seconds')
self.assertTrue(str(self.cdftime_pg.origin) == ' 1-01-01 00:00:00')
self.assertTrue(
self.cdftime_pg.unit_string == 'seconds since 0001-01-01 00:00:00')
self.assertTrue(self.cdftime_pg.calendar == 'proleptic_gregorian')
# check date2num method.
d = datetime(1990, 5, 5, 2, 17)
t1 = numpy.around(self.cdftime_pg.date2num(d))
self.assertTrue(t1 == 62777470620.0)
# check num2date method.
d2 = self.cdftime_pg.num2date(t1)
self.assertTrue(str(d) == str(d2))
# check day of year.
ndayr = d.timetuple()[7]
self.assertTrue(ndayr == 125)
# check noleap calendar.
# this is a non-existant date, should raise ValueError.
self.assertRaises(ValueError,
utime,
'days since 1600-02-29 00:00:00',
calendar='noleap')
self.assertTrue(self.cdftime_noleap.units == 'days')
self.assertTrue(
str(self.cdftime_noleap.origin) == '1600-02-28 00:00:00')
self.assertTrue(self.cdftime_noleap.unit_string ==
'days since 1600-02-28 00:00:00')
self.assertTrue(self.cdftime_noleap.calendar == 'noleap')
assert_almost_equal(
self.cdftime_noleap.date2num(self.cdftime_noleap.origin), 0.0)
# check date2num method.
d1 = datetime(2000, 2, 28)
d2 = datetime(1600, 2, 28)
t1 = self.cdftime_noleap.date2num(d1)
t2 = self.cdftime_noleap.date2num(d2)
assert_almost_equal(t1, 400 * 365.)
assert_almost_equal(t2, 0.)
t12 = self.cdftime_noleap.date2num([d1, d2])
assert_almost_equal(t12, [400 * 365., 0])
# check num2date method.
d2 = self.cdftime_noleap.num2date(t1)
self.assertTrue(str(d1) == str(d2))
# check day of year.
ndayr = d2.timetuple()[7]
self.assertTrue(ndayr == 59)
# non-existant date, should raise ValueError.
date = datetime(2000, 2, 29)
self.assertRaises(ValueError, self.cdftime_noleap.date2num, date)
# check all_leap calendar.
self.assertTrue(self.cdftime_leap.units == 'days')
self.assertTrue(str(self.cdftime_leap.origin) == '1600-02-29 00:00:00')
self.assertTrue(
self.cdftime_leap.unit_string == 'days since 1600-02-29 00:00:00')
self.assertTrue(self.cdftime_leap.calendar == 'all_leap')
assert_almost_equal(
self.cdftime_leap.date2num(self.cdftime_leap.origin), 0.0)
# check date2num method.
d1 = datetime(2000, 2, 29)
d2 = datetime(1600, 2, 29)
t1 = self.cdftime_leap.date2num(d1)
t2 = self.cdftime_leap.date2num(d2)
assert_almost_equal(t1, 400 * 366.)
assert_almost_equal(t2, 0.)
# check num2date method.
d2 = self.cdftime_leap.num2date(t1)
self.assertTrue(str(d1) == str(d2))
# check day of year.
ndayr = d2.timetuple()[7]
self.assertTrue(ndayr == 60)
# double check date2num,num2date methods.
d = datetime(2000, 12, 31)
t1 = self.cdftime_mixed.date2num(d)
d2 = self.cdftime_mixed.num2date(t1)
self.assertTrue(str(d) == str(d2))
ndayr = d2.timetuple()[7]
self.assertTrue(ndayr == 366)
# check 360_day calendar.
self.assertTrue(self.cdftime_360day.units == 'days')
self.assertTrue(
str(self.cdftime_360day.origin) == '1600-02-30 00:00:00')
self.assertTrue(self.cdftime_360day.unit_string ==
'days since 1600-02-30 00:00:00')
self.assertTrue(self.cdftime_360day.calendar == '360_day')
assert_almost_equal(
self.cdftime_360day.date2num(self.cdftime_360day.origin), 0.0)
# check date2num,num2date methods.
# use datetime from netcdftime, since this date doesn't
# exist in "normal" calendars.
d = datetimex(2000, 2, 30)
t1 = self.cdftime_360day.date2num(d)
assert_almost_equal(t1, 360 * 400.)
d2 = self.cdftime_360day.num2date(t1)
assert_equal(str(d), str(d2))
# check day of year.
d = datetime(2001, 12, 30)
t = self.cdftime_360day.date2num(d)
assert_almost_equal(t, 144660.0)
date = self.cdftime_360day.num2date(t)
self.assertTrue(str(d) == str(date))
ndayr = date.timetuple()[7]
self.assertTrue(ndayr == 360)
# Check fraction
d = datetime(1969, 12, 30, 12)
t = self.cdftime_360day.date2num(d)
date = self.cdftime_360day.num2date(t)
assert_equal(str(d), str(date))
# test proleptic julian calendar.
d = datetime(1858, 11, 17, 12)
t = self.cdftime_jul.date2num(d)
assert_almost_equal(t, 7528932.0)
d1 = datetime(1582, 10, 4, 23)
d2 = datetime(1582, 10, 15, 0)
assert_almost_equal(
self.cdftime_jul.date2num(d1) + 241.0,
self.cdftime_jul.date2num(d2))
date = self.cdftime_jul.num2date(t)
self.assertTrue(str(d) == str(date))
# test julian day from date, date from julian day
d = datetime(1858, 11, 17)
mjd = JulianDayFromDate(d)
assert_almost_equal(mjd, 2400000.5)
date = DateFromJulianDay(mjd)
self.assertTrue(str(date) == str(d))
# test iso 8601 units string
d = datetime(1970, 1, 1, 1)
t = self.cdftime_iso.date2num(d)
assert_equal(numpy.around(t), 3600)
# test fix for issue 75 (seconds hit 60 at end of month,
# day goes out of range).
t = 733499.0
d = num2date(t, units='days since 0001-01-01 00:00:00')
dateformat = '%Y-%m-%d %H:%M:%S'
assert_equal(d.strftime(dateformat), '2009-04-01 00:00:00')
# test edge case of issue 75 for numerical problems
for t in (733498.999, 733498.9999, 733498.99999, 733498.999999,
733498.9999999):
d = num2date(t, units='days since 0001-01-01 00:00:00')
t2 = date2num(d, units='days since 0001-01-01 00:00:00')
assert (abs(t2 - t) < 1e-5) # values should be less than second
# Check equality testing
d1 = datetimex(1979, 6, 21, 9, 23, 12)
d2 = datetime(1979, 6, 21, 9, 23, 12)
assert (d1 == d2)
# check timezone offset
d = datetime(2012, 2, 29, 15)
# mixed_tz is -6 hours from UTC, mixed is UTC so
# difference in elapsed time is -6 hours.
assert (self.cdftime_mixed_tz.date2num(d) -
self.cdftime_mixed.date2num(d) == -6)
# Check comparisons with Python datetime types
# Note that d1 has to use the proleptic Gregorian calendar to
# be comparable to d2: datetime.datetime uses the proleptic
# Gregorian calendar and year 1000 is before the
# Julian/Gregorian transition (1582-10-15).
d1 = num2date(0, 'days since 1000-01-01', 'proleptic_gregorian')
d2 = datetime(2000, 1, 1)
# The date d3 is well after the Julian/Gregorian transition
# and so this Gregorian date can be compared to the proleptic
# Gregorian date d2.
d3 = num2date(0, 'days since 3000-01-01', 'standard')
assert d1 < d2
assert d2 < d3
# check all comparisons
assert d1 != d2
assert d1 <= d2
assert d2 > d1
assert d2 >= d1
# check datetime hash
d1 = datetimex(1995, 1, 1)
d2 = datetime(1995, 1, 1)
d3 = datetimex(2001, 2, 30)
assert hash(d1) == hash(d1)
assert hash(d1) == hash(d2)
assert hash(d1) != hash(d3)
assert hash(d3) == hash(d3)
# check datetime immutability
# using assertRaises as a context manager
# only works with python >= 2.7 (issue #497).
immutability_tests = {
"year": 1999,
"month": 6,
"day": 5,
"hour": 10,
"minute": 33,
"second": 45,
"dayofwk": 1,
"dayofyr": 52,
"format": '%Y'
}
for name, value in immutability_tests.items():
self.assertRaises(AttributeError, setattr, d1, name, value)
# Check leading white space
self.assertEqual(str(self.cdftime_leading_space.origin),
' 850-01-01 00:00:00')
#issue 330
units = "seconds since 1970-01-01T00:00:00Z"
t = utime(units)
for n in range(10):
assert n == int(round(t.date2num(t.num2date(n))))
#issue 344
units = 'hours since 2013-12-12T12:00:00'
assert (1.0 == date2num(num2date(1.0, units), units))
# test rountrip accuracy
# also tests error found in issue #349
calendars=['standard', 'gregorian', 'proleptic_gregorian', 'noleap', 'julian',\
'all_leap', '365_day', '366_day', '360_day']
dateformat = '%Y-%m-%d %H:%M:%S'
dateref = datetime(2015, 2, 28, 12)
ntimes = 1001
for calendar in calendars:
eps = 100.
units = 'microseconds since 1800-01-30 01:01:01'
microsecs1 = date2num(dateref, units, calendar=calendar)
for n in range(ntimes):
microsecs1 += 1.
date1 = num2date(microsecs1, units, calendar=calendar)
microsecs2 = date2num(date1, units, calendar=calendar)
date2 = num2date(microsecs2, units, calendar=calendar)
err = numpy.abs(microsecs1 - microsecs2)
assert (err < eps)
assert (
date1.strftime(dateformat) == date2.strftime(dateformat))
units = 'milliseconds since 1800-01-30 01:01:01'
eps = 0.1
millisecs1 = date2num(dateref, units, calendar=calendar)
for n in range(ntimes):
millisecs1 += 0.001
date1 = num2date(millisecs1, units, calendar=calendar)
millisecs2 = date2num(date1, units, calendar=calendar)
date2 = num2date(millisecs2, units, calendar=calendar)
err = numpy.abs(millisecs1 - millisecs2)
assert (err < eps)
assert (
date1.strftime(dateformat) == date2.strftime(dateformat))
eps = 1.e-4
units = 'seconds since 0001-01-30 01:01:01'
secs1 = date2num(dateref, units, calendar=calendar)
for n in range(ntimes):
secs1 += 0.1
date1 = num2date(secs1, units, calendar=calendar)
secs2 = date2num(date1, units, calendar=calendar)
date2 = num2date(secs2, units, calendar=calendar)
err = numpy.abs(secs1 - secs2)
assert (err < eps)
assert (
date1.strftime(dateformat) == date2.strftime(dateformat))
eps = 1.e-5
units = 'minutes since 0001-01-30 01:01:01'
mins1 = date2num(dateref, units, calendar=calendar)
for n in range(ntimes):
mins1 += 0.01
date1 = num2date(mins1, units, calendar=calendar)
mins2 = date2num(date1, units, calendar=calendar)
date2 = num2date(mins2, units, calendar=calendar)
err = numpy.abs(mins1 - mins2)
assert (err < eps)
assert (
date1.strftime(dateformat) == date2.strftime(dateformat))
eps = 1.e-5
units = 'hours since 0001-01-30 01:01:01'
hrs1 = date2num(dateref, units, calendar=calendar)
for n in range(ntimes):
hrs1 += 0.001
date1 = num2date(hrs1, units, calendar=calendar)
hrs2 = date2num(date1, units, calendar=calendar)
date2 = num2date(hrs2, units, calendar=calendar)
err = numpy.abs(hrs1 - hrs2)
assert (err < eps)
assert (
date1.strftime(dateformat) == date2.strftime(dateformat))
eps = 1.e-5
units = 'days since 0001-01-30 01:01:01'
days1 = date2num(dateref, units, calendar=calendar)
for n in range(ntimes):
days1 += 0.00001
date1 = num2date(days1, units, calendar=calendar)
days2 = date2num(date1, units, calendar=calendar)
date2 = num2date(days2, units, calendar=calendar)
err = numpy.abs(days1 - days2)
assert (err < eps)
assert (
date1.strftime(dateformat) == date2.strftime(dateformat))
# issue 353
assert (num2date(0, 'hours since 2000-01-01 0') == datetime(
2000, 1, 1, 0))
# issue 354
num1 = numpy.array([[0, 1], [2, 3]])
num2 = numpy.array([[0, 1], [2, 3]])
dates1 = num2date(num1, 'days since 0001-01-01')
dates2 = num2date(num2, 'days since 2001-01-01')
assert (dates1.shape == (2, 2))
assert (dates2.shape == (2, 2))
num1b = date2num(dates1, 'days since 0001-01-01')
num2b = date2num(dates2, 'days since 2001-01-01')
assert (num1b.shape == (2, 2))
assert (num2b.shape == (2, 2))
assert_almost_equal(num1, num1b)
assert_almost_equal(num2, num2b)
# issue 357 (make sure time zone offset in units done correctly)
# Denver time, 7 hours behind UTC
units = 'hours since 1682-10-15 -07:00 UTC'
# date after gregorian switch, python datetime used
date = datetime(1682, 10, 15) # assumed UTC
num = date2num(date, units)
# UTC is 7 hours ahead of units, so num should be -7
assert (num == -7)
assert (num2date(num, units) == date)
units = 'hours since 1482-10-15 -07:00 UTC'
# date before gregorian switch, netcdftime datetime used
date = datetime(1482, 10, 15)
num = date2num(date, units)
date2 = num2date(num, units)
assert (num == -7)
assert (date2.year == date.year)
assert (date2.month == date.month)
assert (date2.day == date.day)
assert (date2.hour == date.hour)
assert (date2.minute == date.minute)
assert (date2.second == date.second)
# issue 362: case insensitive calendars
self.assertTrue(self.cdftime_mixed_capcal.calendar == 'standard')
self.assertTrue(self.cdftime_noleap_capcal.calendar == 'noleap')
d = datetime(2015, 3, 4, 12, 18, 30)
units = 'days since 0001-01-01'
for cap_cal, low_cal in (('STANDARD', 'standard'), ('NoLeap',
'noleap'),
('Gregorian', 'gregorian'), ('ALL_LEAP',
'all_leap')):
d1 = date2num(d, units, cap_cal)
d2 = date2num(d, units, low_cal)
self.assertEqual(d1, d2)
self.assertEqual(num2date(d1, units, cap_cal),
num2date(d1, units, low_cal))
# issue 415
t = datetimex(2001, 12, 1, 2, 3, 4)
self.assertEqual(t, copy.deepcopy(t))
# issue 442
units = "days since 0000-01-01 00:00:00"
# this should fail (year zero not allowed with real-world calendars)
try:
date2num(datetime(1, 1, 1), units, calendar='standard')
except ValueError:
pass
# this should not fail (year zero allowed in 'fake' calendars)
t = date2num(datetime(1, 1, 1), units, calendar='360_day')
self.assertEqual(t, 360)
d = num2date(t, units, calendar='360_day')
self.assertEqual(d, Datetime360Day(1, 1, 1))
d = num2date(0, units, calendar='360_day')
self.assertEqual(d, Datetime360Day(0, 1, 1))
# list around missing dates in Gregorian calendar
# scalar
units = 'days since 0001-01-01 12:00:00'
t1 = date2num(datetime(1582, 10, 4), units, calendar='gregorian')
t2 = date2num(datetime(1582, 10, 15), units, calendar='gregorian')
self.assertEqual(t1 + 1, t2)
# list
t1, t2 = date2num([datetime(1582, 10, 4),
datetime(1582, 10, 15)],
units,
calendar='gregorian')
self.assertEqual(t1 + 1, t2)
t1, t2 = date2num([datetime(1582, 10, 4),
datetime(1582, 10, 15)],
units,
calendar='standard')
self.assertEqual(t1 + 1, t2)
# this should fail: days missing in Gregorian calendar
try:
t1, t2, t3 = date2num([
datetime(1582, 10, 4),
datetime(1582, 10, 10),
datetime(1582, 10, 15)
],
units,
calendar='standard')
except ValueError:
pass
# test fix for issue #596 - julian day calculations wrong for negative years,
# caused incorrect rountrip num2date(date2num(date)) roundtrip for dates with year
# < 0.
u = utime("seconds since 1-1-1", calendar='julian')
date1 = datetimex(-1, 1, 1)
date2 = u.num2date(u.date2num(date1))
assert (date2.year == date1.year)
assert (date2.month == date1.month)
assert (date2.day == date1.day)
assert (date2.hour == date1.hour)
assert (date2.minute == date1.minute)
assert (date2.second == date1.second)
assert_almost_equal(JulianDayFromDate(date1), 1721057.5)
# issue 596 - negative years fail in utime.num2date
u = utime("seconds since 1-1-1", "proleptic_gregorian")
d = u.num2date(u.date2num(datetimex(-1, 1, 1)))
assert (d.year == -1)
assert (d.month == 1)
assert (d.day == 1)
assert (d.hour == 0)
# test fix for issue #659 (proper treatment of negative time values).
units = 'days since 1800-01-01 00:00:0.0'
d = num2date(-657073, units, calendar='standard')
assert (d.year == 1)
assert (d.month == 1)
assert (d.day == 1)
assert (d.hour == 0)
# issue 685: wrong time zone conversion
# 'The following times all refer to the same moment: "18:30Z", "22:30+04", "1130-0700", and "15:00-03:30'
# (https://en.wikipedia.org/w/index.php?title=ISO_8601&oldid=787811367#Time_offsets_from_UTC)
# test num2date
utc_date = datetime(2000, 1, 1, 18, 30)
for units in ("hours since 2000-01-01 22:30+04:00",
"hours since 2000-01-01 11:30-07:00",
"hours since 2000-01-01 15:00-03:30"):
d = num2date(0, units, calendar="standard")
assert (numpy.abs((d - utc_date).total_seconds()) < 1.e-3)
# also test with negative values to cover 2nd code path
d = num2date(-1, units, calendar="standard")
assert(numpy.abs((d - \
(utc_date-timedelta(hours=1))).total_seconds()) < 1.e-3)
n = date2num(utc_date, units, calendar="standard")
# n should always be 0 as all units refer to the same point in time
self.assertEqual(n, 0)
# explicitly test 2nd code path for date2num
units = "hours since 2000-01-01 22:30+04:00"
n = date2num(utc_date, units, calendar="julian")
# n should always be 0 as all units refer to the same point in time
assert_almost_equal(n, 0)
def runTest(self):
"""testing netcdftime"""
# test mixed julian/gregorian calendar
# check attributes.
self.assertTrue(self.cdftime_mixed.units == 'hours')
self.assertTrue(
repr(self.cdftime_mixed.origin) == ' 1-01-01 00:00:00')
self.assertTrue(
self.cdftime_mixed.unit_string == 'hours since 0001-01-01 00:00:00')
self.assertTrue(self.cdftime_mixed.calendar == 'standard')
# check date2num method. (date before switch)
d = datetime(1582, 10, 4, 23)
t1 = self.cdftime_mixed.date2num(d)
assert_almost_equal(t1, 13865687.0)
# check num2date method.
d2 = self.cdftime_mixed.num2date(t1)
self.assertTrue(str(d) == str(d2))
# this is a non-existant date, should raise ValueError.
d = datetime(1582, 10, 5, 0)
self.assertRaises(ValueError, self.cdftime_mixed.date2num, d)
# check date2num/num2date with date after switch.
d = datetime(1582, 10, 15, 0)
t2 = self.cdftime_mixed.date2num(d)
assert_almost_equal(t2, 13865688.0)
d2 = self.cdftime_mixed.num2date(t2)
self.assertTrue(str(d) == str(d2))
# check day of year.
ndayr = d.timetuple()[7]
self.assertTrue(ndayr == 288)
# test using numpy arrays.
t = numpy.arange(t2, t2 + 240.0, 12.)
t = numpy.reshape(t, (4, 5))
d = self.cdftime_mixed.num2date(t)
self.assertTrue(d.shape == t.shape)
d_check = "1582-10-15 00:00:001582-10-15 12:00:001582-10-16 00:00:001582-10-16 12:00:001582-10-17 00:00:001582-10-17 12:00:001582-10-18 00:00:001582-10-18 12:00:001582-10-19 00:00:001582-10-19 12:00:001582-10-20 00:00:001582-10-20 12:00:001582-10-21 00:00:001582-10-21 12:00:001582-10-22 00:00:001582-10-22 12:00:001582-10-23 00:00:001582-10-23 12:00:001582-10-24 00:00:001582-10-24 12:00:00"
d2 = [str(dd) for dd in d.flat]
self.assertTrue(d_check == ''.join(d2))
# test julian calendar with numpy arrays
d = self.cdftime_julian.num2date(t)
self.assertTrue(d.shape == t.shape)
d_check = "1582-10-05 00:00:001582-10-05 12:00:001582-10-06 00:00:001582-10-06 12:00:001582-10-07 00:00:001582-10-07 12:00:001582-10-08 00:00:001582-10-08 12:00:001582-10-09 00:00:001582-10-09 12:00:001582-10-10 00:00:001582-10-10 12:00:001582-10-11 00:00:001582-10-11 12:00:001582-10-12 00:00:001582-10-12 12:00:001582-10-13 00:00:001582-10-13 12:00:001582-10-14 00:00:001582-10-14 12:00:00"
d2 = [str(dd) for dd in d.flat]
self.assertTrue(d_check == ''.join(d2))
# test proleptic gregorian calendar.
self.assertTrue(self.cdftime_pg.units == 'seconds')
self.assertTrue(repr(self.cdftime_pg.origin) == ' 1-01-01 00:00:00')
self.assertTrue(
self.cdftime_pg.unit_string == 'seconds since 0001-01-01 00:00:00')
self.assertTrue(self.cdftime_pg.calendar == 'proleptic_gregorian')
# check date2num method.
d = datetime(1990, 5, 5, 2, 17)
t1 = numpy.around(self.cdftime_pg.date2num(d))
self.assertTrue(t1 == 62777470620.0)
# check num2date method.
d2 = self.cdftime_pg.num2date(t1)
self.assertTrue(str(d) == str(d2))
# check day of year.
ndayr = d.timetuple()[7]
self.assertTrue(ndayr == 125)
# check noleap calendar.
# this is a non-existant date, should raise ValueError.
self.assertRaises(
ValueError, utime, 'days since 1600-02-29 00:00:00', calendar='noleap')
self.assertTrue(self.cdftime_noleap.units == 'days')
self.assertTrue(
repr(self.cdftime_noleap.origin) == '1600-02-28 00:00:00')
self.assertTrue(
self.cdftime_noleap.unit_string == 'days since 1600-02-28 00:00:00')
self.assertTrue(self.cdftime_noleap.calendar == 'noleap')
assert_almost_equal(
self.cdftime_noleap.date2num(self.cdftime_noleap.origin), 0.0)
# check date2num method.
d1 = datetime(2000, 2, 28)
d2 = datetime(1600, 2, 28)
t1 = self.cdftime_noleap.date2num(d1)
t2 = self.cdftime_noleap.date2num(d2)
assert_almost_equal(t1, 400 * 365.)
assert_almost_equal(t2, 0.)
t12 = self.cdftime_noleap.date2num([d1, d2])
assert_almost_equal(t12, [400 * 365., 0])
# check num2date method.
d2 = self.cdftime_noleap.num2date(t1)
self.assertTrue(str(d1) == str(d2))
# check day of year.
ndayr = d2.timetuple()[7]
self.assertTrue(ndayr == 59)
# non-existant date, should raise ValueError.
date = datetime(2000, 2, 29)
self.assertRaises(ValueError, self.cdftime_noleap.date2num, date)
# check all_leap calendar.
self.assertTrue(self.cdftime_leap.units == 'days')
self.assertTrue(
repr(self.cdftime_leap.origin) == '1600-02-29 00:00:00')
self.assertTrue(
self.cdftime_leap.unit_string == 'days since 1600-02-29 00:00:00')
self.assertTrue(self.cdftime_leap.calendar == 'all_leap')
assert_almost_equal(
self.cdftime_leap.date2num(self.cdftime_leap.origin), 0.0)
# check date2num method.
d1 = datetime(2000, 2, 29)
d2 = datetime(1600, 2, 29)
t1 = self.cdftime_leap.date2num(d1)
t2 = self.cdftime_leap.date2num(d2)
assert_almost_equal(t1, 400 * 366.)
assert_almost_equal(t2, 0.)
# check num2date method.
d2 = self.cdftime_leap.num2date(t1)
self.assertTrue(str(d1) == str(d2))
# check day of year.
ndayr = d2.timetuple()[7]
self.assertTrue(ndayr == 60)
# double check date2num,num2date methods.
d = datetime(2000, 12, 31)
t1 = self.cdftime_mixed.date2num(d)
d2 = self.cdftime_mixed.num2date(t1)
self.assertTrue(str(d) == str(d2))
ndayr = d2.timetuple()[7]
self.assertTrue(ndayr == 366)
# check 360_day calendar.
self.assertTrue(self.cdftime_360day.units == 'days')
self.assertTrue(
repr(self.cdftime_360day.origin) == '1600-02-30 00:00:00')
self.assertTrue(
self.cdftime_360day.unit_string == 'days since 1600-02-30 00:00:00')
self.assertTrue(self.cdftime_360day.calendar == '360_day')
assert_almost_equal(
self.cdftime_360day.date2num(self.cdftime_360day.origin), 0.0)
# check date2num,num2date methods.
# use datetime from netcdftime, since this date doesn't
# exist in "normal" calendars.
d = datetimex(2000, 2, 30)
t1 = self.cdftime_360day.date2num(d)
assert_almost_equal(t1, 360 * 400.)
d2 = self.cdftime_360day.num2date(t1)
assert_equal(str(d), str(d2))
# check day of year.
d = datetime(2001, 12, 30)
t = self.cdftime_360day.date2num(d)
assert_almost_equal(t, 144660.0)
date = self.cdftime_360day.num2date(t)
self.assertTrue(str(d) == str(date))
ndayr = date.timetuple()[7]
self.assertTrue(ndayr == 360)
# Check fraction
d = datetime(1969, 12, 30, 12)
t = self.cdftime_360day.date2num(d)
date = self.cdftime_360day.num2date(t)
assert_equal(str(d), str(date))
# test proleptic julian calendar.
d = datetime(1858, 11, 17, 12)
t = self.cdftime_jul.date2num(d)
assert_almost_equal(t, 7528932.0)
d1 = datetime(1582, 10, 4, 23)
d2 = datetime(1582, 10, 15, 0)
assert_almost_equal(
self.cdftime_jul.date2num(d1) + 241.0, self.cdftime_jul.date2num(d2))
date = self.cdftime_jul.num2date(t)
self.assertTrue(str(d) == str(date))
# test julian day from date, date from julian day
d = datetime(1858, 11, 17)
mjd = JulianDayFromDate(d)
assert_almost_equal(mjd, 2400000.5)
date = DateFromJulianDay(mjd)
self.assertTrue(str(date) == str(d))
# test iso 8601 units string
d = datetime(1970, 1, 1, 1)
t = self.cdftime_iso.date2num(d)
assert_equal(numpy.around(t), 3600)
# test fix for issue 75 (seconds hit 60 at end of month,
# day goes out of range).
t = 733498.999999
d = num2date(t, units='days since 0001-01-01 00:00:00')
assert_equal(str(d), '2009-04-01 00:00:00')
# test edge case of issue 75 for numerical problems
for t in (733498.999, 733498.9999, 733498.99999, 733498.999999, 733498.9999999):
d = num2date(t, units='days since 0001-01-01 00:00:00')
t2 = date2num(d, units='days since 0001-01-01 00:00:00')
assert(abs(t2 - t) < 1e-5) # values should be less than second
# Check equality testing
d1 = datetimex(1979, 6, 21, 9, 23, 12)
d2 = datetime(1979, 6, 21, 9, 23, 12)
assert(d1 == d2)
# check timezone offset
d = datetime(2012, 2, 29, 15)
assert(self.cdftime_mixed.date2num(
d) - self.cdftime_mixed_tz.date2num(d) == 6)
# Check comparisons with Python datetime types
d1 = num2date(0, 'days since 1000-01-01', 'standard')
d2 = datetime(2000, 1, 1)
d3 = num2date(0, 'days since 3000-01-01', 'standard')
assert d1 < d2
assert d2 < d3
# check all comparisons
assert d1 != d2
assert d1 <= d2
assert d2 > d1
assert d2 >= d1
# check datetime hash
d1 = datetimex(1995, 1, 1)
d2 = datetime(1995, 1, 1)
d3 = datetimex(2001, 2, 30)
assert hash(d1) == hash(d1)
assert hash(d1) == hash(d2)
assert hash(d1) != hash(d3)
assert hash(d3) == hash(d3)
# check datetime immutability
with self.assertRaises(AttributeError):
d1.year = 1999
with self.assertRaises(AttributeError):
d1.month = 6
with self.assertRaises(AttributeError):
d1.day = 5
with self.assertRaises(AttributeError):
d1.hour = 10
with self.assertRaises(AttributeError):
d1.minute = 33
with self.assertRaises(AttributeError):
d1.second = 45
with self.assertRaises(AttributeError):
d1.dayofwk = 1
with self.assertRaises(AttributeError):
d1.dayofyr = 52
with self.assertRaises(AttributeError):
d1.format = '%Y'
# Check leading white space
self.assertEqual(
repr(self.cdftime_leading_space.origin), ' 850-01-01 00:00:00')
#issue 330
units = "seconds since 1970-01-01T00:00:00Z"
t = utime(units)
for n in range(10):
assert n == int(round(t.date2num(t.num2date(n))))
def runTest(self):
"""testing netcdftime"""
# test mixed julian/gregorian calendar
# check attributes.
self.assert_(self.cdftime_mixed.units == 'hours')
self.assert_(repr(self.cdftime_mixed.origin) == ' 1-01-01 00:00:00')
self.assert_(self.cdftime_mixed.unit_string == 'hours since 0001-01-01 00:00:00')
self.assert_(self.cdftime_mixed.calendar == 'standard')
# check date2num method. (date before switch)
d = datetime(1582,10,4,23)
t1 = self.cdftime_mixed.date2num(d)
assert_almost_equal(t1,13865687.0)
# check num2date method.
d2 = self.cdftime_mixed.num2date(t1)
self.assert_(str(d) == str(d2))
# this is a non-existant date, should raise ValueError.
d = datetime(1582,10,5,0)
self.assertRaises(ValueError, self.cdftime_mixed.date2num, d)
# check date2num/num2date with date after switch.
d = datetime(1582,10,15,0)
t2 = self.cdftime_mixed.date2num(d)
assert_almost_equal(t2,13865688.0)
d2 = self.cdftime_mixed.num2date(t2)
self.assert_(str(d) == str(d2))
# check day of year.
ndayr = d.timetuple()[7]
self.assert_(ndayr == 288)
# test using numpy arrays.
t = numpy.arange(t2,t2+240.0,12.)
t = numpy.reshape(t,(4,5))
d = self.cdftime_mixed.num2date(t)
self.assert_(d.shape == t.shape)
d_check = "1582-10-15 00:00:001582-10-15 12:00:001582-10-16 00:00:001582-10-16 12:00:001582-10-17 00:00:001582-10-17 12:00:001582-10-18 00:00:001582-10-18 12:00:001582-10-19 00:00:001582-10-19 12:00:001582-10-20 00:00:001582-10-20 12:00:001582-10-21 00:00:001582-10-21 12:00:001582-10-22 00:00:001582-10-22 12:00:001582-10-23 00:00:001582-10-23 12:00:001582-10-24 00:00:001582-10-24 12:00:00"
d2 = [str(dd) for dd in d.flat]
self.assert_(d_check == ''.join(d2))
# test proleptic gregorian calendar.
self.assert_(self.cdftime_pg.units == 'seconds')
self.assert_(repr(self.cdftime_pg.origin) == ' 1-01-01 00:00:00')
self.assert_(self.cdftime_pg.unit_string == 'seconds since 0001-01-01 00:00:00')
self.assert_(self.cdftime_pg.calendar == 'proleptic_gregorian')
# check date2num method.
d = datetime(1990,5,5,2,17)
t1 = numpy.around(self.cdftime_pg.date2num(d))
self.assert_(t1 == 62777470620.0)
# check num2date method.
d2 = self.cdftime_pg.num2date(t1)
self.assert_(str(d) == str(d2))
# check day of year.
ndayr = d.timetuple()[7]
self.assert_(ndayr == 125)
# check noleap calendar.
# this is a non-existant date, should raise ValueError.
self.assertRaises(ValueError,utime,'days since 1600-02-29 00:00:00',calendar='noleap')
self.assert_(self.cdftime_noleap.units == 'days')
self.assert_(repr(self.cdftime_noleap.origin) == '1600-02-28 00:00:00')
self.assert_(self.cdftime_noleap.unit_string == 'days since 1600-02-28 00:00:00')
self.assert_(self.cdftime_noleap.calendar == 'noleap')
assert_almost_equal(self.cdftime_noleap.date2num(self.cdftime_noleap.origin),0.0)
# check date2num method.
d1 = datetime(2000,2,28)
d2 = datetime(1600,2,28)
t1 = self.cdftime_noleap.date2num(d1)
t2 = self.cdftime_noleap.date2num(d2)
assert_almost_equal(t1,400*365.)
assert_almost_equal(t2,0.)
t12 = self.cdftime_noleap.date2num([d1,d2])
assert_almost_equal(t12, [400*365., 0])
# check num2date method.
d2 = self.cdftime_noleap.num2date(t1)
self.assert_(str(d1) == str(d2))
# check day of year.
ndayr = d2.timetuple()[7]
self.assert_(ndayr == 59)
# non-existant date, should raise ValueError.
date = datetime(2000,2,29)
self.assertRaises(ValueError,self.cdftime_noleap.date2num,date)
# check all_leap calendar.
self.assert_(self.cdftime_leap.units == 'days')
self.assert_(repr(self.cdftime_leap.origin) == '1600-02-29 00:00:00')
self.assert_(self.cdftime_leap.unit_string == 'days since 1600-02-29 00:00:00')
self.assert_(self.cdftime_leap.calendar == 'all_leap')
assert_almost_equal(self.cdftime_leap.date2num(self.cdftime_leap.origin),0.0)
# check date2num method.
d1 = datetime(2000,2,29)
d2 = datetime(1600,2,29)
t1 = self.cdftime_leap.date2num(d1)
t2 = self.cdftime_leap.date2num(d2)
assert_almost_equal(t1,400*366.)
assert_almost_equal(t2,0.)
# check num2date method.
d2 = self.cdftime_leap.num2date(t1)
self.assert_(str(d1) == str(d2))
# check day of year.
ndayr = d2.timetuple()[7]
self.assert_(ndayr == 60)
# double check date2num,num2date methods.
d = datetime(2000,12,31)
t1 = self.cdftime_mixed.date2num(d)
d2 = self.cdftime_mixed.num2date(t1)
self.assert_(str(d) == str(d2))
ndayr = d2.timetuple()[7]
self.assert_(ndayr == 366)
# check 360_day calendar.
self.assert_(self.cdftime_360day.units == 'days')
self.assert_(repr(self.cdftime_360day.origin) == '1600-02-30 00:00:00')
self.assert_(self.cdftime_360day.unit_string == 'days since 1600-02-30 00:00:00')
self.assert_(self.cdftime_360day.calendar == '360_day')
assert_almost_equal(self.cdftime_360day.date2num(self.cdftime_360day.origin),0.0)
# check date2num,num2date methods.
# use datetime from netcdftime, since this date doesn't
# exist in "normal" calendars.
d = datetimex(2000,2,30)
t1 = self.cdftime_360day.date2num(d)
assert_almost_equal(t1,360*400.)
d2 = self.cdftime_360day.num2date(t1)
assert_equal(str(d), str(d2))
# check day of year.
d = datetime(2001,12,30)
t = self.cdftime_360day.date2num(d)
assert_almost_equal(t,144660.0)
date = self.cdftime_360day.num2date(t)
self.assert_(str(d) == str(date))
ndayr = date.timetuple()[7]
self.assert_(ndayr == 360)
# Check fraction
d = datetime(1969, 12, 30, 12)
t = self.cdftime_360day.date2num(d)
date = self.cdftime_360day.num2date(t)
assert_equal(str(d), str(date))
# test proleptic julian calendar.
d = datetime(1858,11,17,12)
t = self.cdftime_jul.date2num(d)
assert_almost_equal(t,7528932.0)
d1 = datetime(1582,10,4,23)
d2 = datetime(1582,10,15,0)
assert_almost_equal(self.cdftime_jul.date2num(d1)+241.0,self.cdftime_jul.date2num(d2))
date = self.cdftime_jul.num2date(t)
self.assert_(str(d) == str(date))
# test julian day from date, date from julian day
d = datetime(1858,11,17)
mjd = JulianDayFromDate(d)
assert_almost_equal(mjd,2400000.5)
date = DateFromJulianDay(mjd)
self.assert_(str(date) == str(d))
# test iso 8601 units string
d = datetime(1970,1,1,1)
t = self.cdftime_iso.date2num(d)
assert_equal(numpy.around(t),3600)
# test fix for issue 75 (seconds hit 60 at end of month,
# day goes out of range).
t = 733498.999999
d = num2date(t,units='days since 0001-01-01 00:00:00')
assert_equal(str(d),'2009-04-01 00:00:00')
# Check equality testing
d1 = datetimex(1979,06,21,9,23,12)
d2 = datetime(1979,06,21,9,23,12)
assert(d1 == d2)
