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unittests_temporal_vector_algebra.py
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unittests_temporal_vector_algebra.py
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"""
(C) 2014 by the GRASS Development Team
This program is free software under the GNU General Public
License (>=v2). Read the file COPYING that comes with GRASS
for details.
:authors: Soeren Gebbert and Thomas Leppelt
"""
import datetime
import grass.temporal as tgis
from grass.gunittest.case import TestCase
from grass.gunittest.main import test
class TestTemporalVectorAlgebra(TestCase):
@classmethod
def setUpClass(cls):
"""Initiate the temporal GIS and set the region
"""
tgis.init(True) # Raise on error instead of exit(1)
cls.use_temp_region()
cls.runModule("g.region", n=80.0, s=0.0, e=120.0,
w=0.0, t=1.0, b=0.0, res=10.0)
cls.runModule("v.random", overwrite=True, quiet=True, npoints=20, seed=1, output='a1')
cls.runModule("v.random", overwrite=True, quiet=True, npoints=20, seed=1, output='a2')
cls.runModule("v.random", overwrite=True, quiet=True, npoints=20, seed=1, output='a3')
cls.runModule("v.random", overwrite=True, quiet=True, npoints=20, seed=1, output='a4')
cls.runModule("v.random", overwrite=True, quiet=True, npoints=20, seed=2, output='b1')
cls.runModule("v.random", overwrite=True, quiet=True, npoints=20, seed=2, output='b2')
cls.runModule("v.random", overwrite=True, quiet=True, npoints=20, seed=3, output='c1')
cls.runModule("v.random", overwrite=True, quiet=True, npoints=20, seed=4, output='d1')
cls.runModule("v.random", overwrite=True, quiet=True, npoints=20, seed=4, output='d2')
cls.runModule("v.random", overwrite=True, quiet=True, npoints=20, seed=4, output='d3')
cls.runModule("v.random", overwrite=True, quiet=True, npoints=20, seed=5, output='singletmap')
cls.runModule("v.random", overwrite=True, quiet=True, npoints=20, seed=6, output='singlemap')
tgis.open_new_stds(name="A", type="stvds", temporaltype="absolute",
title="A", descr="A", semantic="field", overwrite=True)
tgis.open_new_stds(name="B", type="stvds", temporaltype="absolute",
title="B", descr="B", semantic="field", overwrite=True)
tgis.open_new_stds(name="C", type="stvds", temporaltype="absolute",
title="B", descr="C", semantic="field", overwrite=True)
tgis.open_new_stds(name="D", type="stvds", temporaltype="absolute",
title="D", descr="D", semantic="field", overwrite=True)
tgis.register_maps_in_space_time_dataset(type="vector", name="A", maps="a1,a2,a3,a4",
start="2001-01-01", increment="1 day", interval=True)
tgis.register_maps_in_space_time_dataset(type="vector", name="B", maps="b1,b2",
start="2001-01-01", increment="2 day", interval=True)
tgis.register_maps_in_space_time_dataset(type="vector", name="C", maps="c1",
start="2001-01-02", increment="2 day", interval=True)
tgis.register_maps_in_space_time_dataset(type="vector", name="D", maps="d1,d2,d3",
start="2001-01-03", increment="1 day", interval=True)
tgis.register_maps_in_space_time_dataset(type="vector", name=None, maps="singletmap",
start="2001-01-03", end="2001-01-04")
def tearDown(self):
self.runModule("t.remove", type="stvds", inputs="R", quiet=True)
@classmethod
def tearDownClass(cls):
"""Remove the temporary region
"""
cls.runModule("t.remove", flags="rf", inputs="A,B,C,D", type='stvds', quiet=True)
cls.del_temp_region()
def test_temporal_select(self):
"""Testing the temporal select operator. """
tva = tgis.TemporalVectorAlgebraParser(run = True, debug = True)
tva.parse(expression="R = A : A", basename="r", overwrite=True)
D = tgis.open_old_stds("R", type="stvds")
self.assertTrue(D.is_in_db())
D.select()
self.assertEqual(D.metadata.get_number_of_maps(), 4)
self.assertEqual(D.metadata.get_number_of_points(), 80)
self.assertEqual(D.metadata.get_number_of_areas(), 0)
self.assertEqual(D.metadata.get_number_of_centroids(), 0)
start, end = D.get_absolute_time()
self.assertEqual(start, datetime.datetime(2001, 1, 1))
self.assertEqual(end, datetime.datetime(2001, 1, 5))
self.assertEqual( D.check_temporal_topology(), True)
self.assertEqual(D.get_granularity(), u'1 day')
def test_temporal_extent1(self):
"""Testing the temporal extent operators. """
ta = tgis.TemporalVectorAlgebraParser(run = True, debug = True)
ta.parse(expression="R = A {:,during,r} C", basename="r", overwrite=True)
D = tgis.open_old_stds("R", type="stvds")
self.assertTrue(D.is_in_db())
D.select()
D.print_info()
maplist = D.get_registered_maps_as_objects()
self.assertEqual(D.metadata.get_number_of_maps(), 2)
start, end = D.get_absolute_time()
self.assertEqual(start, datetime.datetime(2001, 1, 2))
self.assertEqual(end, datetime.datetime(2001, 1, 4))
self.assertEqual( D.check_temporal_topology(), False)
self.assertEqual(D.get_granularity(), u'2 days')
def test_temporal_select_operators(self):
"""Testing the temporal select operator. Including temporal relations. """
tva = tgis.TemporalVectorAlgebraParser(run = True, debug = True)
tva.parse(expression="R = A {:,during} C", basename="r", overwrite=True)
D = tgis.open_old_stds("R", type="stvds")
self.assertTrue(D.is_in_db())
D.select()
self.assertEqual(D.metadata.get_number_of_maps(), 2)
self.assertEqual(D.metadata.get_number_of_points(), 40)
self.assertEqual(D.metadata.get_number_of_areas(), 0)
self.assertEqual(D.metadata.get_number_of_centroids(), 0)
start, end = D.get_absolute_time()
self.assertEqual(start, datetime.datetime(2001, 1, 2))
self.assertEqual(end, datetime.datetime(2001, 1, 4))
self.assertEqual( D.check_temporal_topology(), True)
self.assertEqual(D.get_granularity(), u'1 day')
def test_temporal_buff_operators_1(self):
"""Testing the bufferoperator."""
tva = tgis.TemporalVectorAlgebraParser(run = True, debug = True)
tva.parse(expression="R = buff_p(A,0.5)", basename="r", overwrite=True)
D = tgis.open_old_stds("R", type="stvds")
self.assertTrue(D.is_in_db())
D.select()
self.assertEqual(D.metadata.get_number_of_maps(), 4)
self.assertEqual(D.metadata.get_number_of_points(), 0)
self.assertEqual(D.metadata.get_number_of_areas(), 80)
self.assertEqual(D.metadata.get_number_of_centroids(), 80)
start, end = D.get_absolute_time()
self.assertEqual(start, datetime.datetime(2001, 1, 1))
self.assertEqual(end, datetime.datetime(2001, 1, 5))
self.assertEqual( D.check_temporal_topology(), True)
self.assertEqual(D.get_granularity(), u'1 day')
def test_temporal_buff_operators_2(self):
"""Testing the bufferoperator."""
tva = tgis.TemporalVectorAlgebraParser(run = True, debug = True)
tva.parse(expression="R = buff_a(buff_p(A,1),10)", basename="r", overwrite=True)
D = tgis.open_old_stds("R", type="stvds")
self.assertTrue(D.is_in_db())
D.select()
self.assertEqual(D.metadata.get_number_of_maps(), 4)
self.assertEqual(D.metadata.get_number_of_points(), 0)
self.assertEqual(D.metadata.get_number_of_areas(), 20)
self.assertEqual(D.metadata.get_number_of_centroids(), 20)
start, end = D.get_absolute_time()
self.assertEqual(start, datetime.datetime(2001, 1, 1))
self.assertEqual(end, datetime.datetime(2001, 1, 5))
self.assertEqual( D.check_temporal_topology(), True)
self.assertEqual(D.get_granularity(), u'1 day')
def test_temporal_overlay_operators_1(self):
"""Testing the spatial overlay operator."""
tva = tgis.TemporalVectorAlgebraParser(run = True, debug = True)
tva.parse(expression="R = buff_p(A,2) & buff_p(D,2)", basename="r", overwrite=True)
D = tgis.open_old_stds("R", type="stvds")
self.assertTrue(D.is_in_db())
D.select()
self.assertEqual(D.metadata.get_number_of_maps(), 2)
self.assertEqual(D.metadata.get_number_of_points(), 0)
self.assertEqual(D.metadata.get_number_of_areas(), 6)
self.assertEqual(D.metadata.get_number_of_centroids(), 6)
start, end = D.get_absolute_time()
self.assertEqual(start, datetime.datetime(2001, 1, 3))
self.assertEqual(end, datetime.datetime(2001, 1, 5))
self.assertEqual( D.check_temporal_topology(), True)
self.assertEqual(D.get_granularity(), u'1 day')
def test_temporal_overlay_operators_2(self):
"""Testing the spatial overlay operator."""
tva = tgis.TemporalVectorAlgebraParser(run = True, debug = True)
tva.parse(expression="R = buff_p(A,1.5) {&,during,r} buff_p(B,1.5)", basename="r", overwrite=True)
D = tgis.open_old_stds("R", type="stvds")
self.assertTrue(D.is_in_db())
D.select()
self.assertEqual(D.metadata.get_number_of_maps(), 4)
self.assertEqual(D.metadata.get_number_of_points(), 0)
self.assertEqual(D.metadata.get_number_of_areas(), 8)
self.assertEqual(D.metadata.get_number_of_centroids(), 8)
start, end = D.get_absolute_time()
self.assertEqual(start, datetime.datetime(2001, 1, 1))
self.assertEqual(end, datetime.datetime(2001, 1, 5))
self.assertEqual( D.check_temporal_topology(), False)
self.assertEqual(D.get_granularity(), u'2 days')
def test_temporal_overlay_operators_3(self):
"""Testing the spatial overlay operator."""
tva = tgis.TemporalVectorAlgebraParser(run = True, debug = True)
tva.parse(expression="R = buff_p(A,2.5) {&,during,l} buff_p(C,2.5)", basename="r", overwrite=True)
D = tgis.open_old_stds("R", type="stvds")
self.assertTrue(D.is_in_db())
D.select()
self.assertEqual(D.metadata.get_number_of_maps(), 2)
self.assertEqual(D.metadata.get_number_of_points(), 0)
self.assertEqual(D.metadata.get_number_of_areas(), 8)
self.assertEqual(D.metadata.get_number_of_centroids(), 8)
start, end = D.get_absolute_time()
self.assertEqual(start, datetime.datetime(2001, 1, 2))
self.assertEqual(end, datetime.datetime(2001, 1, 4))
self.assertEqual( D.check_temporal_topology(), True)
self.assertEqual(D.get_granularity(), u'1 day')
if __name__ == '__main__':
test()