def test_map_values(self):
'''
tests the mapping of datavalues using a temporal map
'''
# build temporal map
nearest = time.temporal_nearest_neighbor()
st = datetime.datetime(2014, 01, 01, 0, 0, 0)
source_dates = [st + datetime.timedelta(hours=i) for i in range(50)]
source_values = numpy.array(range(50))
st = datetime.datetime(2014, 01, 01, 5, 0, 0)
target_dates = [st + datetime.timedelta(hours=i) for i in range(10)]
map = nearest.map(source_dates, target_dates)
self.assertTrue(len(map) < len(source_dates))
self.assertTrue(list(map) == range(5, 15))
# test value mapping
target_vals = time.transform(map, source_values)
self.assertTrue(len(target_vals) == len(target_dates))
self.assertTrue(list(target_vals) == range(5, 15))
# test list values
source_values = range(50)
target_vals = time.transform(map, source_values)
self.assertTrue(len(target_vals) == len(target_dates))
self.assertTrue(list(target_vals) == range(5, 15))
# test invalid type
target_vals = None
try:
source_values = 10
target_vals = time.transform(map, source_values)
except Exception, e:
self.assertTrue(type(e) == ValueError)
def test_map_values(self):
'''
tests the mapping of datavalues using a temporal map
'''
# build temporal map
nearest = time.temporal_nearest_neighbor()
st = datetime.datetime(2014, 01, 01, 0, 0, 0)
source_dates = [st + datetime.timedelta(hours=i) for i in range(50)]
source_values = numpy.array(range(50))
st = datetime.datetime(2014, 01, 01, 5, 0, 0)
target_dates = [st + datetime.timedelta(hours=i) for i in range(10)]
map = nearest.map(source_dates, target_dates)
self.assertTrue(len(map) < len(source_dates))
self.assertTrue(list(map) == range(5, 15))
# test value mapping
target_vals = time.transform(map, source_values)
self.assertTrue(len(target_vals) == len(target_dates))
self.assertTrue(list(target_vals) == range(5,15))
# test list values
source_values = range(50)
target_vals = time.transform(map, source_values)
self.assertTrue(len(target_vals) == len(target_dates))
self.assertTrue(list(target_vals) == range(5,15))
# test invalid type
target_vals = None
try:
source_values = 10
target_vals = time.transform(map, source_values)
except Exception, e:
self.assertTrue(type(e) == ValueError)
def test_nearest_neighbor(self):
"""
tests the construction of a temporal map
"""
nearest = time.temporal_nearest_neighbor()
st = datetime.datetime(2014, 01, 01, 0, 0, 0)
source_dates = [st + datetime.timedelta(hours=i) for i in range(50)]
# test slightly offset dates
st = datetime.datetime(2014, 01, 01, 0, 5, 0)
target_dates = [st + datetime.timedelta(hours=i) for i in range(50)]
map = nearest.map(source_dates, target_dates)
self.assertTrue(list(map) == range(50) )
# test unequal lengths
st = datetime.datetime(2014, 01, 01, 5, 0, 0)
target_dates = [st + datetime.timedelta(hours=i) for i in range(10)]
map = nearest.map(source_dates, target_dates)
self.assertTrue(len(map) < len(source_dates))
self.assertTrue(list(map) == range(5, 15))
# test many to one
st = datetime.datetime(2014, 01, 01, 5, 0, 0)
target_dates = [st + datetime.timedelta(minutes=i) for i in range(10)]
map = nearest.map(source_dates, target_dates)
self.assertTrue(len(map) < len(source_dates))
self.assertTrue(list(map) == 10*[5])
# test numpy
st = datetime.datetime(2014, 01, 01, 5, 0, 0)
target_dates = numpy.array([st + datetime.timedelta(minutes=i) for i in range(10)])
map = nearest.map(source_dates, target_dates)
self.assertTrue(len(map) < len(source_dates))
self.assertTrue(list(map) == 10*[5])
def test_nearest_neighbor(self):
"""
tests the construction of a temporal map
"""
nearest = time.temporal_nearest_neighbor()
st = datetime.datetime(2014, 01, 01, 0, 0, 0)
source_dates = [st + datetime.timedelta(hours=i) for i in range(50)]
# test slightly offset dates
st = datetime.datetime(2014, 01, 01, 0, 5, 0)
target_dates = [st + datetime.timedelta(hours=i) for i in range(50)]
map = nearest.map(source_dates, target_dates)
self.assertTrue(list(map) == range(50))
# test unequal lengths
st = datetime.datetime(2014, 01, 01, 5, 0, 0)
target_dates = [st + datetime.timedelta(hours=i) for i in range(10)]
map = nearest.map(source_dates, target_dates)
self.assertTrue(len(map) < len(source_dates))
self.assertTrue(list(map) == range(5, 15))
# test many to one
st = datetime.datetime(2014, 01, 01, 5, 0, 0)
target_dates = [st + datetime.timedelta(minutes=i) for i in range(10)]
map = nearest.map(source_dates, target_dates)
self.assertTrue(len(map) < len(source_dates))
self.assertTrue(list(map) == 10 * [5])
# test numpy
st = datetime.datetime(2014, 01, 01, 5, 0, 0)
target_dates = numpy.array(
[st + datetime.timedelta(minutes=i) for i in range(10)])
map = nearest.map(source_dates, target_dates)
self.assertTrue(len(map) < len(source_dates))
self.assertTrue(list(map) == 10 * [5])