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unittests_temporal_raster_algebra_grs.py
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unittests_temporal_raster_algebra_grs.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 os
import grass.script
import grass.temporal as tgis
import grass.gunittest as gunittest
class TestTemporalRasterAlgebra(gunittest.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("r.mapcalc", overwrite=True, quiet=True, expression="a1 = 1")
cls.runModule("r.mapcalc", overwrite=True, quiet=True, expression="a2 = 2")
cls.runModule("r.mapcalc", overwrite=True, quiet=True, expression="a3 = 3")
cls.runModule("r.mapcalc", overwrite=True, quiet=True, expression="a4 = 4")
cls.runModule("r.mapcalc", overwrite=True, quiet=True, expression="a5 = 5")
cls.runModule("r.mapcalc", overwrite=True, quiet=True, expression="a6 = 6")
cls.runModule("r.mapcalc", overwrite=True, quiet=True, expression="b1 = 7")
cls.runModule("r.mapcalc", overwrite=True, quiet=True, expression="b2 = 8")
cls.runModule("r.mapcalc", overwrite=True, quiet=True, expression="c1 = 9")
cls.runModule("r.mapcalc", overwrite=True, quiet=True, expression="d1 = 10")
cls.runModule("r.mapcalc", overwrite=True, quiet=True, expression="d2 = 11")
cls.runModule("r.mapcalc", overwrite=True, quiet=True, expression="d3 = 12")
cls.runModule("r.mapcalc", overwrite=True, quiet=True, expression="singletmap = 99")
tgis.open_new_stds(name="A", type="strds", temporaltype="absolute",
title="A", descr="A", semantic="field", overwrite=True)
tgis.open_new_stds(name="B", type="strds", temporaltype="absolute",
title="B", descr="B", semantic="field", overwrite=True)
tgis.open_new_stds(name="C", type="strds", temporaltype="absolute",
title="C", descr="C", semantic="field", overwrite=True)
tgis.open_new_stds(name="D", type="strds", temporaltype="absolute",
title="D", descr="D", semantic="field", overwrite=True)
tgis.register_maps_in_space_time_dataset(type="raster", name="A", maps="a1,a2,a3,a4,a5,a6",
start="2001-01-01", increment="1 month", interval=True)
tgis.register_maps_in_space_time_dataset(type="raster", name="B", maps="b1,b2",
start="2001-01-01", increment="3 months", interval=True)
tgis.register_maps_in_space_time_dataset(type="raster", name="C", maps="c1",
start="2001-01-01", increment="1 year", interval=True)
tgis.register_maps_in_space_time_dataset(type="raster", name="D", maps="d1",
start="2001-01-01", increment="5 days", interval=True)
tgis.register_maps_in_space_time_dataset(type="raster", name="D", maps="d2",
start="2001-03-01", increment="5 days", interval=True)
tgis.register_maps_in_space_time_dataset(type="raster", name="D", maps="d3",
start="2001-05-01", increment="5 days", interval=True)
tgis.register_maps_in_space_time_dataset(type="raster", name=None, maps="singletmap",
start="2001-03-01", end="2001-04-01", interval=True)
def tearDown(self):
return
self.runModule("t.remove", flags="rf", inputs="R", quiet=True)
@classmethod
def tearDownClass(cls):
return
"""Remove the temporary region
"""
cls.runModule("t.remove", flags="rf", inputs="A,B,C,D", quiet=True)
cls.runModule("t.unregister", maps="singletmap", quiet=True)
cls.del_temp_region()
def test_1(self):
"""Simple arithmetik test"""
tra = tgis.TemporalRasterAlgebraParser(run = True, debug = True)
expr = "R = if(C == 9, A - 1)"
ret = tra.setup_common_granularity(expression=expr, lexer = tgis.TemporalRasterAlgebraLexer())
self.assertEqual(ret, True)
tra.parse(expression=expr, basename="r", overwrite=True)
D = tgis.open_old_stds("R", type="strds")
self.assertEqual(D.metadata.get_number_of_maps(), 6)
self.assertEqual(D.metadata.get_min_min(), 0) # 1 - 1
self.assertEqual(D.metadata.get_max_max(), 5) # 6 - 1
start, end = D.get_absolute_time()
self.assertEqual(start, datetime.datetime(2001, 1, 1))
self.assertEqual(end, datetime.datetime(2001, 7, 1))
self.assertEqual( D.check_temporal_topology(), True)
self.assertEqual(D.get_granularity(), u'1 month')
def test_2(self):
"""Simple arithmetik test"""
tra = tgis.TemporalRasterAlgebraParser(run = True, debug = True)
expr = "R = if(D == 11, A - 1, A + 1)"
ret = tra.setup_common_granularity(expression=expr, lexer = tgis.TemporalRasterAlgebraLexer())
self.assertEqual(ret, True)
tra.parse(expression=expr, basename="r", overwrite=True)
D = tgis.open_old_stds("R", type="strds")
self.assertEqual(D.metadata.get_number_of_maps(), 15)
self.assertEqual(D.metadata.get_min_min(), 2) # 1 - 1
self.assertEqual(D.metadata.get_max_max(), 6) # 5 + 1
start, end = D.get_absolute_time()
self.assertEqual(start, datetime.datetime(2001, 1, 1))
self.assertEqual(end, datetime.datetime(2001, 5, 6))
self.assertEqual( D.check_temporal_topology(), True)
self.assertEqual(D.get_granularity(), u'1 day')
def test_simple_arith_hash_1(self):
"""Simple arithmetic test including the hash operator"""
tra = tgis.TemporalRasterAlgebraParser(run = True, debug = True)
tra.parse(expression='R = A + (A # A)', basename="r", overwrite=True)
D = tgis.open_old_stds("R", type="strds")
self.assertEqual(D.metadata.get_number_of_maps(), 6)
self.assertEqual(D.metadata.get_min_min(), 2)
self.assertEqual(D.metadata.get_max_max(), 7)
start, end = D.get_absolute_time()
self.assertEqual(start, datetime.datetime(2001, 1, 1))
self.assertEqual(end, datetime.datetime(2001, 7, 1))
def test_simple_arith_hash_2(self):
"""Simple arithmetic test including the hash operator"""
tra = tgis.TemporalRasterAlgebraParser(run = True, debug = True)
tra.parse(expression='R = (A + A) # A', basename="r", overwrite=True)
D = tgis.open_old_stds("R", type="strds")
self.assertEqual(D.metadata.get_number_of_maps(), 6)
self.assertEqual(D.metadata.get_min_min(), 1)
self.assertEqual(D.metadata.get_max_max(), 1)
start, end = D.get_absolute_time()
self.assertEqual(start, datetime.datetime(2001, 1, 1))
self.assertEqual(end, datetime.datetime(2001, 7, 1))
def test_simple_arith_td_1(self):
"""Simple arithmetic test"""
tra = tgis.TemporalRasterAlgebraParser(run = True, debug = True)
expr = 'R = A + td(A:D)'
ret = tra.setup_common_granularity(expression=expr, lexer = tgis.TemporalRasterAlgebraLexer())
self.assertEqual(ret, True)
tra.parse(expression=expr, basename="r", overwrite=True)
D = tgis.open_old_stds("R", type="strds")
self.assertEqual(D.metadata.get_number_of_maps(), 15)
self.assertEqual(D.metadata.get_min_min(), 2) # 1 - 1
self.assertEqual(D.metadata.get_max_max(), 6) # 5 + 1
start, end = D.get_absolute_time()
self.assertEqual(start, datetime.datetime(2001, 1, 1))
self.assertEqual(end, datetime.datetime(2001, 5, 6))
self.assertEqual( D.check_temporal_topology(), True)
self.assertEqual(D.get_granularity(), u'1 day')
def test_simple_arith_if_1(self):
"""Simple arithmetic test with if condition"""
tra = tgis.TemporalRasterAlgebraParser(run = True, debug = True)
expr = 'R = if(start_date(A) >= "2001-02-01", A + A)'
ret = tra.setup_common_granularity(expression=expr, lexer = tgis.TemporalRasterAlgebraLexer())
self.assertEqual(ret, True)
tra.parse(expression=expr, basename="r", overwrite=True)
D = tgis.open_old_stds("R", type="strds")
self.assertEqual(D.metadata.get_number_of_maps(), 5)
self.assertEqual(D.metadata.get_min_min(), 4)
self.assertEqual(D.metadata.get_max_max(), 12)
start, end = D.get_absolute_time()
self.assertEqual(start, datetime.datetime(2001, 2, 1))
self.assertEqual(end, datetime.datetime(2001, 7, 1))
def test_simple_arith_if_2(self):
"""Simple arithmetic test with if condition"""
tra = tgis.TemporalRasterAlgebraParser(run = True, debug = True)
expr = 'R = if(A#A == 1, A - A)'
ret = tra.setup_common_granularity(expression=expr, lexer = tgis.TemporalRasterAlgebraLexer())
self.assertEqual(ret, True)
tra.parse(expression=expr, basename="r", overwrite=True)
D = tgis.open_old_stds("R", type="strds")
self.assertEqual(D.metadata.get_number_of_maps(), 6)
self.assertEqual(D.metadata.get_min_min(), 0)
self.assertEqual(D.metadata.get_max_max(), 0)
start, end = D.get_absolute_time()
self.assertEqual(start, datetime.datetime(2001, 1, 1))
self.assertEqual(end, datetime.datetime(2001, 7, 1))
def test_complex_arith_if_1(self):
"""Complex arithmetic test with if condition"""
tra = tgis.TemporalRasterAlgebraParser(run = True, debug = True)
expr = 'R = if(start_date(A) < "2001-03-01" && A#A == 1, A+C, A-C)'
ret = tra.setup_common_granularity(expression=expr, lexer = tgis.TemporalRasterAlgebraLexer())
self.assertEqual(ret, True)
tra.parse(expression=expr, basename="r", overwrite=True)
D = tgis.open_old_stds("R", type="strds")
self.assertEqual(D.metadata.get_number_of_maps(), 6)
self.assertEqual(D.metadata.get_min_min(), -6) # 3 - 9
self.assertEqual(D.metadata.get_max_max(), 11) # 2 + 2
start, end = D.get_absolute_time()
self.assertEqual(start, datetime.datetime(2001, 1, 1))
self.assertEqual(end, datetime.datetime(2001, 7, 1))
def test_temporal_neighbors(self):
"""Simple temporal neighborhood computation test"""
tra = tgis.TemporalRasterAlgebraParser(run = True, debug = True)
expr ='R = (A[0,0,-1] : D) + (A[0,0,1] : D)'
ret = tra.setup_common_granularity(expression=expr, lexer = tgis.TemporalRasterAlgebraLexer())
self.assertEqual(ret, True)
tra.parse(expression=expr, basename="r", overwrite=True)
D = tgis.open_old_stds("R", type="strds")
self.assertEqual(D.metadata.get_number_of_maps(), 14)
self.assertEqual(D.metadata.get_min_min(), 2) # 1 + 1
self.assertEqual(D.metadata.get_max_max(), 10) # 5 + 5
start, end = D.get_absolute_time()
self.assertEqual(start, datetime.datetime(2001, 1, 2))
self.assertEqual(end, datetime.datetime(2001, 5, 6))
def test_map(self):
"""Test STDS + single map without timestamp"""
tra = tgis.TemporalRasterAlgebraParser(run = True, debug = True)
expr = "R = A + map(singletmap)"
ret = tra.setup_common_granularity(expression=expr, lexer = tgis.TemporalRasterAlgebraLexer())
self.assertEqual(ret, True)
tra.parse(expression=expr, basename="r", overwrite=True)
D = tgis.open_old_stds("R", type="strds")
self.assertEqual(D.metadata.get_number_of_maps(), 6)
self.assertEqual(D.metadata.get_min_min(), 100) # 1 + 99
self.assertEqual(D.metadata.get_max_max(), 105) # 6 + 99
start, end = D.get_absolute_time()
self.assertEqual(start, datetime.datetime(2001, 1, 1))
self.assertEqual(end, datetime.datetime(2001, 7, 1))
def test_tmap_map(self):
"""Test STDS + single map with and without timestamp"""
tra = tgis.TemporalRasterAlgebraParser(run = True, debug = True)
expr = "R = tmap(singletmap) + A + map(singletmap)"
ret = tra.setup_common_granularity(expression=expr, lexer = tgis.TemporalRasterAlgebraLexer())
self.assertEqual(ret, True)
tra.parse(expression=expr, basename="r", overwrite=True)
D = tgis.open_old_stds("R", type="strds")
self.assertEqual(D.metadata.get_number_of_maps(),1)
self.assertEqual(D.metadata.get_min_min(), 201)
self.assertEqual(D.metadata.get_max_max(), 201)
start, end = D.get_absolute_time()
self.assertEqual(start, datetime.datetime(2001, 3, 1))
self.assertEqual(end, datetime.datetime(2001, 4, 1))
self.assertEqual( D.check_temporal_topology(), True)
self.assertEqual(D.get_granularity(), u'1 month')
if __name__ == '__main__':
gunittest.test()