本文整理汇总了Python中xray.conventions.decode_cf_datetime函数的典型用法代码示例。如果您正苦于以下问题：Python decode_cf_datetime函数的具体用法？Python decode_cf_datetime怎么用？Python decode_cf_datetime使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了decode_cf_datetime函数的12个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Python代码示例。
示例1: test_decode_cf_datetime_non_standard_units
def test_decode_cf_datetime_non_standard_units(self):
expected = pd.date_range(periods=100, start='1970-01-01', freq='h')
# netCDFs from madis.noaa.gov use this format for their time units
# they cannot be parsed by netcdftime, but pd.Timestamp works
units = 'hours since 1-1-1970'
actual = conventions.decode_cf_datetime(np.arange(100), units)
self.assertArrayEqual(actual, expected)
开发者ID:roxyboy，项目名称:xray，代码行数:7，代码来源:test_conventions.py
示例2: test_cf_datetime
def test_cf_datetime(self):
import netCDF4 as nc4
for num_dates, units in [
(np.arange(10), 'days since 2000-01-01'),
(np.arange(10).reshape(2, 5), 'days since 2000-01-01'),
(12300 + np.arange(5), 'hours since 1680-01-01 00:00:00'),
# here we add a couple minor formatting errors to test
# the robustness of the parsing algorithm.
(12300 + np.arange(5), 'hour since 1680-01-01 00:00:00'),
(12300 + np.arange(5), u'Hour since 1680-01-01 00:00:00'),
(12300 + np.arange(5), ' Hour since 1680-01-01 00:00:00 '),
(10, 'days since 2000-01-01'),
([10], 'daYs since 2000-01-01'),
([[10]], 'days since 2000-01-01'),
([10, 10], 'days since 2000-01-01'),
(0, 'days since 1000-01-01'),
([0], 'days since 1000-01-01'),
([[0]], 'days since 1000-01-01'),
(np.arange(2), 'days since 1000-01-01'),
(np.arange(0, 100000, 20000), 'days since 1900-01-01'),
(17093352.0, 'hours since 1-1-1 00:00:0.0'),
([0.5, 1.5], 'hours since 1900-01-01T00:00:00'),
]:
for calendar in ['standard', 'gregorian', 'proleptic_gregorian']:
expected = _ensure_naive_tz(nc4.num2date(num_dates, units, calendar))
print(num_dates, units, calendar)
with warnings.catch_warnings():
warnings.filterwarnings('ignore',
'Unable to decode time axis')
actual = conventions.decode_cf_datetime(num_dates, units,
calendar)
if (isinstance(actual, np.ndarray)
and np.issubdtype(actual.dtype, np.datetime64)):
# self.assertEqual(actual.dtype.kind, 'M')
# For some reason, numpy 1.8 does not compare ns precision
# datetime64 arrays as equal to arrays of datetime objects,
# but it works for us precision. Thus, convert to us
# precision for the actual array equal comparison...
actual_cmp = actual.astype('M8[us]')
else:
actual_cmp = actual
self.assertArrayEqual(expected, actual_cmp)
encoded, _, _ = conventions.encode_cf_datetime(actual, units,
calendar)
if '1-1-1' not in units:
# pandas parses this date very strangely, so the original
# units/encoding cannot be preserved in this case:
# (Pdb) pd.to_datetime('1-1-1 00:00:0.0')
# Timestamp('2001-01-01 00:00:00')
self.assertArrayEqual(num_dates, np.around(encoded, 1))
if (hasattr(num_dates, 'ndim') and num_dates.ndim == 1
and '1000' not in units):
# verify that wrapping with a pandas.Index works
# note that it *does not* currently work to even put
# non-datetime64 compatible dates into a pandas.Index :(
encoded, _, _ = conventions.encode_cf_datetime(
pd.Index(actual), units, calendar)
self.assertArrayEqual(num_dates, np.around(encoded, 1))
开发者ID:benjwadams，项目名称:xray，代码行数:58，代码来源:test_conventions.py
示例3: test_decode_non_standard_calendar_single_element
def test_decode_non_standard_calendar_single_element(self):
units = 'days since 0001-01-01'
for calendar in ['noleap', '365_day', '360_day', 'julian', 'all_leap',
'366_day']:
for num_time in [735368, [735368], [[735368]]]:
with warnings.catch_warnings():
warnings.filterwarnings('ignore', 'Unable to decode time axis')
actual = conventions.decode_cf_datetime(num_time, units,
calendar=calendar)
self.assertEqual(actual.dtype, np.dtype('M8[ns]'))
开发者ID:ToddSmall，项目名称:xray，代码行数:10，代码来源:test_conventions.py
示例4: test_decode_cf_datetime_non_iso_strings
def test_decode_cf_datetime_non_iso_strings(self):
# datetime strings that are _almost_ ISO compliant but not quite,
# but which netCDF4.num2date can still parse correctly
expected = pd.date_range(periods=100, start='2000-01-01', freq='h')
cases = [(np.arange(100), 'hours since 2000-01-01 0'),
(np.arange(100), 'hours since 2000-1-1 0'),
(np.arange(100), 'hours since 2000-01-01 0:00')]
for num_dates, units in cases:
actual = conventions.decode_cf_datetime(num_dates, units)
self.assertArrayEqual(actual, expected)
开发者ID:roxyboy，项目名称:xray，代码行数:10，代码来源:test_conventions.py
示例5: test_cf_datetime_nan
def test_cf_datetime_nan(self):
for num_dates, units, expected_list in [
([np.nan], 'days since 2000-01-01', ['NaT']),
([np.nan, 0], 'days since 2000-01-01',
['NaT', '2000-01-01T00:00:00Z']),
([np.nan, 0, 1], 'days since 2000-01-01',
['NaT', '2000-01-01T00:00:00Z', '2000-01-02T00:00:00Z']),
]:
with warnings.catch_warnings():
warnings.filterwarnings('ignore', 'All-NaN')
actual = conventions.decode_cf_datetime(num_dates, units)
expected = np.array(expected_list, dtype='datetime64[ns]')
self.assertArrayEqual(expected, actual)
开发者ID:ToddSmall，项目名称:xray，代码行数:13，代码来源:test_conventions.py
示例6: test_decode_non_standard_calendar_single_element_fallback
def test_decode_non_standard_calendar_single_element_fallback(self):
import netCDF4 as nc4
units = 'days since 0001-01-01'
dt = nc4.netcdftime.datetime(2001, 2, 29)
for calendar in ['360_day', 'all_leap', '366_day']:
num_time = nc4.date2num(dt, units, calendar)
with self.assertWarns('Unable to decode time axis'):
actual = conventions.decode_cf_datetime(num_time, units,
calendar=calendar)
expected = np.asarray(nc4.num2date(num_time, units, calendar))
print(num_time, calendar, actual, expected)
self.assertEqual(actual.dtype, np.dtype('O'))
self.assertEqual(expected, actual)
开发者ID:roxyboy，项目名称:xray，代码行数:14，代码来源:test_conventions.py
示例7: test_decode_non_standard_calendar
def test_decode_non_standard_calendar(self):
import netCDF4 as nc4
for calendar in ['noleap', '365_day', '360_day', 'julian', 'all_leap',
'366_day']:
units = 'days since 0001-01-01'
times = pd.date_range('2001-04-01-00', end='2001-04-30-23',
freq='H')
noleap_time = nc4.date2num(times.to_pydatetime(), units,
calendar=calendar)
expected = times.values
with warnings.catch_warnings():
warnings.filterwarnings('ignore', 'Unable to decode time axis')
actual = conventions.decode_cf_datetime(noleap_time, units,
calendar=calendar)
self.assertEqual(actual.dtype, np.dtype('M8[ns]'))
self.assertArrayEqual(actual, expected)
开发者ID:ToddSmall，项目名称:xray，代码行数:17，代码来源:test_conventions.py
示例8: test_cf_datetime
def test_cf_datetime(self):
import netCDF4 as nc4
for num_dates, units in [
(np.arange(100), 'days since 2000-01-01'),
(np.arange(100).reshape(10, 10), 'days since 2000-01-01'),
(12300 + np.arange(50), 'hours since 1680-01-01 00:00:00'),
(10, 'days since 2000-01-01'),
([10], 'days since 2000-01-01'),
([[10]], 'days since 2000-01-01'),
([10, 10], 'days since 2000-01-01'),
(0, 'days since 1000-01-01'),
([0], 'days since 1000-01-01'),
([[0]], 'days since 1000-01-01'),
(np.arange(20), 'days since 1000-01-01'),
(np.arange(0, 100000, 10000), 'days since 1900-01-01')
]:
for calendar in ['standard', 'gregorian', 'proleptic_gregorian']:
expected = nc4.num2date(num_dates, units, calendar)
print(num_dates, units, calendar)
with warnings.catch_warnings():
warnings.filterwarnings('ignore',
'Unable to decode time axis')
actual = conventions.decode_cf_datetime(num_dates, units,
calendar)
if (isinstance(actual, np.ndarray)
and np.issubdtype(actual.dtype, np.datetime64)):
self.assertEqual(actual.dtype, np.dtype('M8[ns]'))
# For some reason, numpy 1.8 does not compare ns precision
# datetime64 arrays as equal to arrays of datetime objects,
# but it works for us precision. Thus, convert to us
# precision for the actual array equal comparison...
actual_cmp = actual.astype('M8[us]')
else:
actual_cmp = actual
self.assertArrayEqual(expected, actual_cmp)
encoded, _, _ = conventions.encode_cf_datetime(actual, units,
calendar)
self.assertArrayEqual(num_dates, np.around(encoded))
if (hasattr(num_dates, 'ndim') and num_dates.ndim == 1
and '1000' not in units):
# verify that wrapping with a pandas.Index works
# note that it *does not* currently work to even put
# non-datetime64 compatible dates into a pandas.Index :(
encoded, _, _ = conventions.encode_cf_datetime(
pd.Index(actual), units, calendar)
self.assertArrayEqual(num_dates, np.around(encoded))
开发者ID:kirknorth，项目名称:xray，代码行数:46，代码来源:test_conventions.py
示例9: test_decode_non_standard_calendar_single_element_fallback
def test_decode_non_standard_calendar_single_element_fallback(self):
import netCDF4 as nc4
units = 'days since 0001-01-01'
dt = nc4.netcdftime.datetime(2001, 2, 29)
for calendar in ['360_day', 'all_leap', '366_day']:
num_time = nc4.date2num(dt, units, calendar)
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter('always')
actual = conventions.decode_cf_datetime(num_time, units,
calendar=calendar)
self.assertEqual(len(w), 1)
self.assertIn('Unable to decode time axis',
str(w[0].message))
expected = np.asarray(nc4.num2date(num_time, units, calendar))
print(num_time, calendar, actual, expected)
self.assertEqual(actual.dtype, np.dtype('O'))
self.assertEqual(expected, actual)
开发者ID:ToddSmall，项目名称:xray，代码行数:18，代码来源:test_conventions.py
示例10: test_decode_non_standard_calendar_fallback
def test_decode_non_standard_calendar_fallback(self):
import netCDF4 as nc4
for year in [2010, 2011, 2012, 2013, 2014]: # insure leap year doesn't matter
for calendar in ['360_day', '366_day', 'all_leap']:
calendar = '360_day'
units = 'days since {0}-01-01'.format(year)
num_times = np.arange(100)
expected = nc4.num2date(num_times, units, calendar)
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter('always')
actual = conventions.decode_cf_datetime(num_times, units,
calendar=calendar)
self.assertEqual(len(w), 1)
self.assertIn('Unable to decode time axis',
str(w[0].message))
self.assertEqual(actual.dtype, np.dtype('O'))
self.assertArrayEqual(actual, expected)
开发者ID:ToddSmall，项目名称:xray，代码行数:19，代码来源:test_conventions.py
示例11: test_decode_non_standard_calendar
def test_decode_non_standard_calendar(self):
import netCDF4 as nc4
for calendar in ['noleap', '365_day', '360_day', 'julian', 'all_leap',
'366_day']:
units = 'days since 0001-01-01'
times = pd.date_range('2001-04-01-00', end='2001-04-30-23',
freq='H')
noleap_time = nc4.date2num(times.to_pydatetime(), units,
calendar=calendar)
expected = times.values
with warnings.catch_warnings():
warnings.filterwarnings('ignore', 'Unable to decode time axis')
actual = conventions.decode_cf_datetime(noleap_time, units,
calendar=calendar)
self.assertEqual(actual.dtype, np.dtype('M8[ns]'))
abs_diff = abs(actual - expected)
# once we no longer support versions of netCDF4 older than 1.1.5,
# we could do this check with near microsecond accuracy:
# https://github.com/Unidata/netcdf4-python/issues/355
self.assertTrue((abs_diff <= np.timedelta64(1, 's')).all())
开发者ID:roxyboy，项目名称:xray，代码行数:21，代码来源:test_conventions.py
示例12: test_decode_non_standard_calendar_multidim_time
def test_decode_non_standard_calendar_multidim_time(self):
import netCDF4 as nc4
calendar = 'noleap'
units = 'days since 0001-01-01'
times1 = pd.date_range('2001-04-01', end='2001-04-05', freq='D')
times2 = pd.date_range('2001-05-01', end='2001-05-05', freq='D')
noleap_time1 = nc4.date2num(times1.to_pydatetime(), units,
calendar=calendar)
noleap_time2 = nc4.date2num(times2.to_pydatetime(), units,
calendar=calendar)
mdim_time = np.empty((len(noleap_time1), 2), )
mdim_time[:, 0] = noleap_time1
mdim_time[:, 1] = noleap_time2
expected1 = times1.values
expected2 = times2.values
with warnings.catch_warnings():
warnings.filterwarnings('ignore', 'Unable to decode time axis')
actual = conventions.decode_cf_datetime(mdim_time, units,
calendar=calendar)
self.assertEqual(actual.dtype, np.dtype('M8[ns]'))
self.assertArrayEqual(actual[:, 0], expected1)
self.assertArrayEqual(actual[:, 1], expected2)
开发者ID:ToddSmall，项目名称:xray，代码行数:24，代码来源:test_conventions.py
注：本文中的xray.conventions.decode_cf_datetime函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。 |
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