def test_point_in_polygon_latlon(self):
# test for point in polygon across dateline
x1 = -175.
y1 = 50.
poly1 = [(150., 60.), (-160., 60.), (-170., 45.), (170., 45.)]
P1 = Polygon(1, poly1)
self.assertTrue(P1.point_in_poly_latlon(x1, y1))
def test_point_in_polygon_latlon(self):
# test for point in polygon across dateline
x1 = -175.
y1 = 50.
poly1= [(150.,60.), (-160.,60.), (-170.,45.), (170.,45.)]
P1 = Polygon(1, poly1)
self.assertTrue(P1.point_in_poly_latlon(x1,y1))
def test_shift(self):
poly3 = [(150.,20.), (-160.,30.), (-170.,10.), (170.,10.)]
P3 = Polygon(3, poly3)
P3._shift_coordinates() # shift longitudes by 200 degree
self.assertEqual(P3.poly[0][0], 150.)
self.assertEqual(P3.poly[1][0], 200.)
self.assertEqual(P3.poly[2][0], 190.)
self.assertEqual(P3.poly[3][0], 170.)
def test_is_closed(self):
poly = [(150.,20.), (-160.,30.), (-170.,10.), (170.,10.)]
P = Polygon(3, poly)
self.assertFalse(P.is_closed())
poly1 = [(150.,20.), (-160.,30.), (-170.,10.), (170.,10.), (150.,20.)]
P1 = Polygon(3, poly1)
self.assertTrue(P1.is_closed())
def test_shift(self):
poly3 = [(150., 20.), (-160., 30.), (-170., 10.), (170., 10.)]
P3 = Polygon(3, poly3)
P3._shift_coordinates() # shift longitudes by 200 degree
self.assertEqual(P3.poly[0][0], 150.)
self.assertEqual(P3.poly[1][0], 200.)
self.assertEqual(P3.poly[2][0], 190.)
self.assertEqual(P3.poly[3][0], 170.)
def test_point_in_polygon(self):
x = 1
y = 1
poly = [(0,0), (2,0), (2,2), (0,2)]
P = Polygon(1, poly)
self.assertTrue(P.point_in_poly(x,y))
x = 4
y = 4
self.assertFalse(P.point_in_poly(x,y))
def test_point_in_polygon(self):
x = 1
y = 1
poly = [(0, 0), (2, 0), (2, 2), (0, 2)]
P = Polygon(1, poly)
self.assertTrue(P.point_in_poly(x, y))
x = 4
y = 4
self.assertFalse(P.point_in_poly(x, y))
def test_polygon_min_max(self):
x = 1
y = 1
poly = [(-5,0), (2,0), (2,2), (0,6)]
P = Polygon(1, poly)
bbox = P.bbox()
self.assertEqual(bbox[0], -5.)
self.assertEqual(bbox[1], 2.)
self.assertEqual(bbox[2], 0.)
self.assertEqual(bbox[3], 6.)
def test_polygon_min_max(self):
x = 1
y = 1
poly = [(-5, 0), (2, 0), (2, 2), (0, 6)]
P = Polygon(1, poly)
bbox = P.bbox()
self.assertEqual(bbox[0], -5.)
self.assertEqual(bbox[1], 2.)
self.assertEqual(bbox[2], 0.)
self.assertEqual(bbox[3], 6.)
def test_raster_multiple_polygon(self): # this is quite slow!
lon = np.linspace(-180., 180., 361)
lat = np.linspace(-90., 90., 181)
LON, LAT = np.meshgrid(lon, lat)
#~ #~
# test a single polygon
poly = []
poly1 = [(-10., -10.), (-10., 20), (15., 0.), (0., -15.)]
poly.append(Polygon(1, poly1))
#~ #~
poly2 = [(-50., -80.), (-50., -70.), (-40., -70.), (-40., -75.)]
poly.append(Polygon(2, poly2))
#~ #~
R = Raster(LON, LAT)
R.rasterize_polygons(poly)
#~ #~
u = np.unique(R.mask[~R.mask.mask])
self.assertTrue(len(u) == 2)
self.assertTrue(1 in u)
self.assertTrue(2 in u)
def test_is_closed(self):
poly = [(150., 20.), (-160., 30.), (-170., 10.), (170., 10.)]
P = Polygon(3, poly)
self.assertFalse(P.is_closed())
poly1 = [(150., 20.), (-160., 30.), (-170., 10.), (170., 10.),
(150., 20.)]
P1 = Polygon(3, poly1)
self.assertTrue(P1.is_closed())
def test_raster_single_polygon(self):
lon = np.linspace(-180., 180., 361)
lat = np.linspace(-90., 90., 181)
LON, LAT = np.meshgrid(lon, lat)
# test a single polygon
poly = [(-10., -10.), (-10., 20), (15., 0.), (0., -25.)]
P = Polygon(5, poly)
R = Raster(LON, LAT)
R.mask = np.zeros(LON.shape) * np.nan
R._rasterize_single_polygon(P)
print np.unique(R.mask)
R.mask = np.ma.array(R.mask, mask=np.isnan(R.mask))
u = np.unique(R.mask[~R.mask.mask])
print R.mask
print u
self.assertTrue(len(u) == 1)
self.assertTrue(5. in u)
def test_convertOGR(self):
poly = [(150.,20.), (-160.,30.), (-170.,10.), (170.,10.)]
P = Polygon(3, poly)
A = P.convertToOGRPolygon()
B = P.convertToOGRPolygon(ensure_positive=True)
def test_convertOGR(self):
poly = [(150., 20.), (-160., 30.), (-170., 10.), (170., 10.)]
P = Polygon(3, poly)
A = P.convertToOGRPolygon()
B = P.convertToOGRPolygon(ensure_positive=True)