def test_get_geolocation_grids(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
lon, lat = d.get_geolocation_grids()
self.assertEqual(type(lon), np.ndarray)
self.assertEqual(type(lat), np.ndarray)
self.assertEqual(lat.shape, (500, 500))
def test_get_geolocation_grids(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
lon, lat = d.get_geolocation_grids()
self.assertEqual(type(lon), np.ndarray)
self.assertEqual(type(lat), np.ndarray)
self.assertEqual(lat.shape, (500, 500))
def test_reproject_domain_if_tps_is_given(self):
n = Nansat(self.test_file_gcps,
log_level=40,
mapper=self.default_mapper)
d = Domain(4326, "-te 27 70 30 72 -ts 500 500")
n.reproject(d, tps=False)
tmpfilename = os.path.join(self.tmp_data_path,
'nansat_reproject_domain.png')
n.write_figure(tmpfilename, 2, clim='hist')
self.assertEqual(n.shape(), (500, 500))
self.assertEqual(type(n[1]), np.ndarray)
self.assertTrue(n.has_band('swathmask'))
n = Nansat(self.test_file_gcps,
log_level=40,
mapper=self.default_mapper)
d = Domain(4326, "-te 27 70 30 72 -ts 500 500")
n.reproject(d, tps=True)
tmpfilename = os.path.join(self.tmp_data_path,
'nansat_reproject_domain.png')
n.write_figure(tmpfilename, 2, clim='hist')
self.assertEqual(n.shape(), (500, 500))
self.assertEqual(type(n[1]), np.ndarray)
self.assertTrue(n.has_band('swathmask'))
def get_drift_vectors(n1, x1, y1, n2, x2, y2, nsr=NSR(), **kwargs):
''' Find ice drift speed m/s
Parameters
----------
n1 : First Nansat object
x1 : 1D vector - X coordinates of keypoints on image 1
y1 : 1D vector - Y coordinates of keypoints on image 1
n2 : Second Nansat object
x1 : 1D vector - X coordinates of keypoints on image 2
y1 : 1D vector - Y coordinates of keypoints on image 2
nsr: Nansat.NSR(), projection that defines the grid
Returns
-------
u : 1D vector - eastward ice drift speed
v : 1D vector - northward ice drift speed
lon1 : 1D vector - longitudes of source points
lat1 : 1D vector - latitudes of source points
lon2 : 1D vector - longitudes of destination points
lat2 : 1D vector - latitudes of destination points
'''
# convert x,y to lon, lat
lon1, lat1 = n1.transform_points(x1, y1)
lon2, lat2 = n2.transform_points(x2, y2)
# create domain that converts lon/lat to units of the projection
d = Domain(nsr, '-te -10 -10 10 10 -tr 1 1')
# find displacement in needed units
x1, y1 = d.transform_points(lon1, lat1, 1)
x2, y2 = d.transform_points(lon2, lat2, 1)
return x2 - x1, y1 - y2, lon1, lat1, lon2, lat2
def test_reproject_GCPs(self):
ds = gdal.Open(self.test_file)
d = Domain(ds=ds)
d.reproject_GCPs('+proj=stere +datum=WGS84 +ellps=WGS84 +lat_0=75 +lon_0=10 +no_defs')
gcp = d.vrt.dataset.GetGCPs()[0]
self.assertTrue(gcp.GCPX > 636161)
self.assertTrue(gcp.GCPY < -288344)
def test_write_map(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
tmpfilename = os.path.join(ntd.tmp_data_path, 'domain_write_map.png')
d.write_map(tmpfilename)
self.assertTrue(os.path.exists(tmpfilename))
i = Image.open(tmpfilename)
i.verify()
self.assertEqual(i.info['dpi'], (50, 50))
def test_get_border(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
lon, lat = d.get_border()
self.assertEqual(type(lon), np.ndarray)
self.assertEqual(type(lat), np.ndarray)
self.assertEqual(len(lat), 44)
self.assertEqual(lat[0], lat[-1])
self.assertEqual(lon[0], lon[-1])
def test_write_map(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
tmpfilename = os.path.join(ntd.tmp_data_path, 'domain_write_map.png')
d.write_map(tmpfilename)
self.assertTrue(os.path.exists(tmpfilename))
i = Image.open(tmpfilename)
i.verify()
self.assertEqual(i.info['dpi'], (50, 50))
def test_get_border(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
lon, lat = d.get_border()
self.assertEqual(type(lon), np.ndarray)
self.assertEqual(type(lat), np.ndarray)
self.assertEqual(len(lat), 44)
self.assertEqual(lat[0], lat[-1])
self.assertEqual(lon[0], lon[-1])
def test_reproject_GCPs(self):
ds = gdal.Open(self.test_file)
d = Domain(ds=ds)
d.reproject_GCPs(
'+proj=stere +datum=WGS84 +ellps=WGS84 +lat_0=75 +lon_0=10 +no_defs'
)
gcp = d.vrt.dataset.GetGCPs()[0]
self.assertTrue(gcp.GCPX > 636161)
self.assertTrue(gcp.GCPY < -288344)
def test_integrated(self):
''' Shall use all developed functions for feature tracking'''
lon1pm, lat1pm = np.meshgrid(np.linspace(-3, 2, 50),
np.linspace(86.4, 86.8, 50))
sid = SeaIceDrift(self.testFiles[0], self.testFiles[1])
uft, vft, lon1ft, lat1ft, lon2ft, lat2ft = sid.get_drift_FT()
upm, vpm, apm, rpm, hpm, lon2pm, lat2pm = sid.get_drift_PM(
lon1pm, lat1pm, lon1ft, lat1ft, lon2ft, lat2ft)
lon1, lat1 = sid.n1.get_border()
lon2, lat2 = sid.n2.get_border()
sid.n1.reproject(Domain(NSR().wkt, '-te -3 86.4 2 86.8 -ts 500 500'))
s01 = sid.n1['sigma0_HV']
sid.n2.reproject(Domain(NSR().wkt, '-te -3 86.4 2 86.8 -ts 500 500'))
s02 = sid.n2['sigma0_HV']
plt.imshow(s01, extent=[-3, 2, 86.4, 86.8], cmap='gray', aspect=12)
plt.quiver(lon1ft,
lat1ft,
uft,
vft,
color='r',
angles='xy',
scale_units='xy',
scale=0.5)
plt.plot(lon2, lat2, '.-r')
plt.xlim([-3, 2])
plt.ylim([86.4, 86.8])
plt.savefig('sea_ice_drift_tests_%s_img1_ft.png' %
inspect.currentframe().f_code.co_name,
dpi=150,
bbox_inches='tight',
pad_inches=0)
plt.close('all')
plt.imshow(s02, extent=[-3, 2, 86.4, 86.8], cmap='gray', aspect=12)
gpi = rpm > 0.4
plt.quiver(lon1pm[gpi],
lat1pm[gpi],
upm[gpi],
vpm[gpi],
rpm[gpi] * hpm[gpi],
angles='xy',
scale_units='xy',
scale=0.5)
plt.plot(lon1, lat1, '.-r')
plt.xlim([-3, 2])
plt.ylim([86.4, 86.8])
plt.savefig('sea_ice_drift_tests_%s_img2_pm.png' %
inspect.currentframe().f_code.co_name,
dpi=150,
bbox_inches='tight',
pad_inches=0)
plt.close('all')
def test_write_map_labels(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
tmpfilename = os.path.join(ntd.tmp_data_path,
'domain_write_map_labels.png')
d.write_map(tmpfilename,
merLabels=[False, False, False, True],
parLabels=[True, False, False, False])
self.assertTrue(os.path.exists(tmpfilename))
i = Image.open(tmpfilename)
i.verify()
def test_write_map_labels(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
tmpfilename = os.path.join(ntd.tmp_data_path,
'domain_write_map_labels.png')
d.write_map(tmpfilename,
merLabels=[False, False, False, True],
parLabels=[True, False, False, False])
self.assertTrue(os.path.exists(tmpfilename))
i = Image.open(tmpfilename)
i.verify()
def test_overlaps_contains(self):
Bergen = Domain(4326, "-te 5 60 6 61 -ts 500 500")
WestCoast = Domain(4326, "-te 1 58 6 64 -ts 500 500")
Norway = Domain(4326, "-te 3 55 30 72 -ts 500 500")
Paris = Domain(4326, "-te 2 48 3 49 -ts 500 500")
self.assertTrue(Bergen.overlaps(Norway))
self.assertTrue(Norway.contains(Bergen))
self.assertFalse(Bergen.contains(Norway))
self.assertTrue(Norway.overlaps(WestCoast))
self.assertFalse(Norway.contains(WestCoast))
self.assertFalse(Paris.overlaps(Norway))
self.assertFalse(Paris.contains(Norway))
def test_export2thredds_longlat_list(self):
d = Domain("+proj=latlong +datum=WGS84 +ellps=WGS84 +no_defs",
"-te 27 70 31 72 -ts 200 200")
n = Nansat(domain=d)
n.add_band(np.ones(d.shape(), np.float32),
parameters={'name': 'L_469'})
n.set_metadata('time_coverage_start', '2016-01-19')
tmpfilename = os.path.join(ntd.tmp_data_path,
'nansat_export2thredds_longlat.nc')
n.export2thredds(tmpfilename, ['L_469'])
ncI = netcdf_file(tmpfilename, 'r')
ncIVar = ncI.variables['L_469']
self.assertTrue(ncIVar.grid_mapping in ncI.variables.keys())
def test_export2thredds_longlat_list(self):
d = Domain("+proj=latlong +datum=WGS84 +ellps=WGS84 +no_defs",
"-te 27 70 31 72 -ts 200 200")
n = Nansat(domain=d)
n.add_band(np.ones(d.shape(), np.float32),
parameters={'name': 'L_469'})
n.set_metadata('time_coverage_start', '2016-01-19')
tmpfilename = os.path.join(ntd.tmp_data_path,
'nansat_export2thredds_longlat.nc')
n.export2thredds(tmpfilename, ['L_469'])
ncI = netcdf_file(tmpfilename, 'r')
ncIVar = ncI.variables['L_469']
self.assertTrue(ncIVar.grid_mapping in ncI.variables.keys())
def get_displacement_km(n1, x1, y1, n2, x2, y2, ll2km='domain'):
''' Find displacement in kilometers using Domain'''
lon1, lat1 = n1.transform_points(x1, y1)
lon2, lat2 = n2.transform_points(x2, y2)
d = Domain(
'+proj=stere +lon_0=%f +lat_0=%f +no_defs' %
(lon1.mean(), lat1.mean()),
'-te -100000 -100000 100000 100000 -tr 1000 1000')
x1d, y1d = d.transform_points(lon1, lat1, 1)
x2d, y2d = d.transform_points(lon2, lat2, 1)
return x2d - x1d, y1d - y2d
def test_export2thredds_longlat_dict(self):
d = Domain("+proj=latlong +datum=WGS84 +ellps=WGS84 +no_defs",
"-te 27 70 31 72 -ts 200 200")
n = Nansat.from_domain(d)
n.add_band(np.ones(d.shape(), np.float32),
parameters={'name': 'L_469'})
n.set_metadata('time_coverage_start', '2016-01-19')
tmpfilename = os.path.join(self.tmp_data_path,
'nansat_export2thredds_longlat.nc')
n.export2thredds(tmpfilename, {'L_469': {'type': '>i1'}})
ncI = Dataset(tmpfilename, 'r')
ncIVar = ncI.variables['L_469']
self.assertTrue(ncIVar.grid_mapping in ncI.variables.keys())
self.assertEqual(ncIVar[:].dtype, np.int8)
def test_export2thredds_longlat_dict(self):
d = Domain("+proj=latlong +datum=WGS84 +ellps=WGS84 +no_defs",
"-te 27 70 31 72 -ts 200 200")
n = Nansat.from_domain(d)
n.add_band(np.ones(d.shape(), np.float32),
parameters={'name': 'L_469'})
n.set_metadata('time_coverage_start', '2016-01-19')
tmpfilename = os.path.join(self.tmp_data_path,
'nansat_export2thredds_longlat.nc')
n.export2thredds(tmpfilename, {'L_469': {'type': '>i1'}})
ncI = Dataset(tmpfilename, 'r')
ncIVar = ncI.variables['L_469']
self.assertTrue(ncIVar.grid_mapping in ncI.variables.keys())
self.assertEqual(ncIVar[:].dtype, np.int8)
def test_get_item_inf_expressions(self):
''' inf should be replaced with nan '''
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
n = Nansat(domain=d, logLevel=40)
arr = np.empty((500, 500))
n.add_band(arr, {'expression': 'np.array([0,1,2,3,np.inf,5,6,7])'})
self.assertIsInstance(n[1], np.ndarray)
self.assertTrue(np.isnan(n[1][4]))
def test_integrated(self, mock_get_invalid_mask):
''' Shall use all developed functions for feature tracking'''
invalid_mask = np.zeros((500,500)).astype(bool)
invalid_mask[:100,:100] = True
mock_get_invalid_mask.return_value = invalid_mask
sid = SeaIceDrift(self.testFiles[0], self.testFiles[1])
lon1b, lat1b = sid.n1.get_border()
lon1pm, lat1pm = np.meshgrid(np.linspace(lon1b.min(), lon1b.max(), 50),
np.linspace(lat1b.min(), lat1b.max(), 50))
uft, vft, lon1ft, lat1ft, lon2ft, lat2ft = sid.get_drift_FT()
upm, vpm, apm, rpm, hpm, lon2pm, lat2pm = sid.get_drift_PM(
lon1pm, lat1pm,
lon1ft, lat1ft,
lon2ft, lat2ft)
lon1, lat1 = sid.n1.get_border()
lon2, lat2 = sid.n2.get_border()
ext_str = '-te %s %s %s %s -ts 500 500' % (lon1b.min(), lat1b.min(), lon1b.max(), lat1b.max())
sid.n1.reproject(Domain(NSR().wkt, ext_str))
s01 = sid.n1['sigma0_HV']
sid.n2.reproject(Domain(NSR().wkt, ext_str))
s02 = sid.n2['sigma0_HV']
extent=[lon1b.min(), lon1b.max(), lat1b.min(), lat1b.max()]
plt.imshow(s01, extent=extent, cmap='gray', aspect=10)
plt.quiver(lon1ft, lat1ft, uft, vft, color='r',
angles='xy', scale_units='xy', scale=0.2)
plt.plot(lon2, lat2, '.-r')
plt.xlim([lon1b.min(), lon1b.max()])
plt.ylim([lat1b.min(), lat1b.max()])
plt.savefig('sea_ice_drift_tests_%s_img1_ft.png' % inspect.currentframe().f_code.co_name,
dpi=150, bbox_inches='tight', pad_inches=0)
plt.close('all')
plt.imshow(s02, extent=extent, cmap='gray', aspect=10)
gpi = hpm*rpm > 4
plt.quiver(lon1pm[gpi], lat1pm[gpi], upm[gpi], vpm[gpi], rpm[gpi]*hpm[gpi],
angles='xy', scale_units='xy', scale=0.2)
plt.plot(lon1, lat1, '.-r')
plt.xlim([lon1b.min(), lon1b.max()])
plt.ylim([lat1b.min(), lat1b.max()])
plt.savefig('sea_ice_drift_tests_%s_img2_pm.png' % inspect.currentframe().f_code.co_name,
dpi=150, bbox_inches='tight', pad_inches=0)
plt.close('all')
def test_reproject_pure_geolocation(self):
n0 = Nansat(self.test_file_gcps)
b0 = n0[1]
lon0, lat0 = n0.get_geolocation_grids()
d1 = Domain.from_lonlat(lon=lon0, lat=lat0)
d2 = Domain.from_lonlat(lon=lon0, lat=lat0, add_gcps=False)
d3 = Domain(NSR().wkt, '-te 27 70 31 72 -ts 500 500')
n1 = Nansat.from_domain(d1, b0)
n2 = Nansat.from_domain(d2, b0)
n1.reproject(d3)
n2.reproject(d3)
b1 = n1[1]
b2 = n2[1]
self.assertTrue(np.allclose(b1, b2))
def setUp(self):
self.test_file_gcps = os.path.join(ntd.test_data_path, 'gcps.tif')
self.test_file_stere = os.path.join(ntd.test_data_path, 'stere.tif')
self.test_file_complex = os.path.join(ntd.test_data_path, 'complex.nc')
self.domain = Domain(4326, '-lle 27 70 31 72 -ts 700 650')
plt.switch_backend('Agg')
if not os.path.exists(self.test_file_gcps):
raise ValueError('No test data available')
def test_get_item_inf_expressions(self):
""" inf should be replaced with nan """
self.mock_pti['get_wkv_variable'].return_value=dict(short_name='newband')
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
n = Nansat.from_domain(d, log_level=40)
arr = np.empty((500, 500))
n.add_band(arr, {'expression': 'np.array([0,1,2,3,np.inf,5,6,7])'})
self.assertIsInstance(n[1], np.ndarray)
self.assertTrue(np.isnan(n[1][4]))
def test_get_item_basic_expressions(self):
""" Testing get_item with some basic expressions """
self.mock_pti['get_wkv_variable'].return_value=dict(short_name='newband')
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
n = Nansat.from_domain(d, np.zeros((500, 500)), {'expression': 'np.ones((500, 500))'})
self.assertIsInstance(n[1], np.ndarray)
self.assertEqual(n[1].shape, (500, 500))
band1 = n[1]
self.assertTrue(np.allclose(band1, np.ones((500, 500))))
def test_reproject_domain(self):
n = Nansat(self.test_file_gcps, logLevel=40)
d = Domain(4326, "-te 27 70 30 72 -ts 500 500")
n.reproject(d)
tmpfilename = os.path.join(ntd.tmp_data_path,
'nansat_reproject_domain.png')
n.write_figure(tmpfilename, 2, clim='hist')
self.assertEqual(n.shape(), (500, 500))
self.assertEqual(type(n[1]), np.ndarray)
def test_reproject_no_addmask(self):
''' Should not add swath mask and return 0 in areas out of swath '''
n = Nansat(self.test_file_complex, logLevel=40)
d = Domain(4326, '-te -92.08 26.85 -92.00 26.91 -ts 200 200')
n.reproject(d, addmask=False)
b = n[1]
self.assertTrue(not n.has_band('swathmask'))
self.assertTrue(np.isfinite(b[0, 0]))
self.assertTrue(np.isfinite(b[100, 100]))
def test_reproject_domain_if_source_and_destination_domain_span_entire_lons(self, mock_Nansat):
n = Nansat(self.test_file_arctic, log_level=40, mapper=self.default_mapper)
d = Domain(4326, "-te -180 180 60 90 -ts 500 500")
n.reproject(d)
tmpfilename = os.path.join(self.tmp_data_path, 'nansat_reproject_domain.png')
n.write_figure(tmpfilename, 2, clim='hist')
self.assertEqual(n.shape(), (500, 500))
self.assertEqual(type(n[1]), np.ndarray)
self.assertTrue(n.has_band('swathmask'))
def test_add_band(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
arr = np.random.randn(500, 500)
n = Nansat.from_domain(d, log_level=40)
n.add_band(arr, {'name': 'band1'})
self.assertEqual(type(n), Nansat)
self.assertEqual(type(n[1]), np.ndarray)
self.assertEqual(n.get_metadata('name', 1), 'band1')
self.assertEqual(n[1].shape, (500, 500))
def test_add_bands_no_parameter(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
arr = np.random.randn(500, 500)
n = Nansat.from_domain(d, log_level=40)
n.add_bands([arr, arr])
self.assertEqual(type(n), Nansat)
self.assertEqual(type(n[1]), np.ndarray)
self.assertEqual(type(n[2]), np.ndarray)
def test_reproject_of_complex(self):
""" Should return np.nan in areas out of swath """
n = Nansat(self.test_file_complex, log_level=40, mapper=self.default_mapper)
d = Domain(4326, '-te -92.08 26.85 -92.00 26.91 -ts 200 200')
n.reproject(d)
b = n[1]
self.assertTrue(n.has_band('swathmask'))
self.assertTrue(np.isnan(b[0, 0]))
self.assertTrue(np.isfinite(b[100, 100]))
def test_reproject_no_addmask(self):
""" Should not add swath mask and return 0 in areas out of swath """
n = Nansat(self.test_file_gcps, log_level=40, mapper=self.default_mapper)
d = Domain(4326, '-te -92.08 26.85 -92.00 26.91 -ts 200 200')
n.reproject(d, addmask=False)
b = n[1]
self.assertTrue(not n.has_band('swathmask'))
self.assertTrue(np.isfinite(b[0, 0]))
self.assertTrue(np.isfinite(b[100, 100]))
def test_add_subvrts_only_to_one_nansat(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
arr = np.random.randn(500, 500)
n1 = Nansat.from_domain(d, log_level=40)
n2 = Nansat.from_domain(d, log_level=40)
n1.add_band(arr, {'name': 'band1'})
self.assertEqual(type(n1.vrt.band_vrts), dict)
self.assertTrue(len(n1.vrt.band_vrts) > 0)
self.assertEqual(n2.vrt.band_vrts, {})
def test_init_domain_array(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
n = Nansat(domain=d,
array=np.random.randn(500, 500),
parameters={'name': 'band1'},
logLevel=40)
self.assertEqual(type(n), Nansat)
self.assertEqual(type(n[1]), np.ndarray)
self.assertEqual(n.get_metadata('name', 1), 'band1')
self.assertEqual(n[1].shape, (500, 500))
def test_add_bands(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
arr = np.random.randn(500, 500)
n = Nansat(domain=d, logLevel=40)
n.add_bands([arr, arr], [{'name': 'band1'}, {'name': 'band2'}])
self.assertEqual(type(n), Nansat)
self.assertEqual(type(n[1]), np.ndarray)
self.assertEqual(type(n[2]), np.ndarray)
self.assertEqual(n.get_metadata('name', 1), 'band1')
self.assertEqual(n.get_metadata('name', 2), 'band2')
def test_from_domain_array(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
n = Nansat.from_domain(d, np.random.randn(500, 500), {'name': 'band1'})
self.assertEqual(type(n), Nansat)
self.assertEqual(type(n[1]), np.ndarray)
self.assertEqual(n.get_metadata('name', 1), 'band1')
self.assertEqual(n[1].shape, (500, 500))
self.assertEqual(n.filename, '')
self.assertIsInstance(n.logger, logging.Logger)
self.assertEqual(n.name, '')
self.assertEqual(n.path, '')
def test_get_item_basic_expressions(self):
''' Testing get_item with some basic expressions '''
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
n = Nansat(domain=d, logLevel=40)
arr = np.empty((500, 500))
n.add_band(arr, {'expression': '1+1'})
n.add_band(arr, {'expression': 'np.random.randn(500, 500)'})
self.assertIsInstance(n[1], int)
self.assertIsInstance(n[2], np.ndarray)
self.assertEqual(n[1], 2)
self.assertEqual(len(n[2]), 500)
self.assertEqual(len(n[2][0]), 500)
def test_add_bands(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
arr = np.random.randn(500, 500)
n = Nansat.from_domain(d, log_level=40)
n.add_bands([arr, arr], [{'name': 'band1'}, {'name': 'band2'}])
self.assertIsInstance(n, Nansat)
self.assertEqual(n.vrt.vrt.vrt, None)
self.assertIsInstance(n[1], np.ndarray)
self.assertIsInstance(n[2], np.ndarray)
self.assertEqual(n.get_metadata('name', 1), 'band1')
self.assertEqual(n.get_metadata('name', 2), 'band2')
def test_get_pixelsize_meters(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
x, y = d.get_pixelsize_meters()
self.assertTrue(x - 444 < 1)
self.assertTrue(y - 723 < 1)
def test_transform_points(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
lon, lat = d.transform_points([1, 2, 3], [1, 2, 3])
self.assertEqual(type(lon), np.ndarray)
self.assertEqual(type(lat), np.ndarray)
def test_write_kml(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
tmpfilename = os.path.join(ntd.tmp_data_path, 'domain_write_kml.kml')
d.write_kml(kmlFileName=tmpfilename)
self.assertTrue(os.path.exists(tmpfilename))
def test_init_from_lonlat(self):
lat, lon = np.mgrid[-90:90:0.5, -180:180:0.5]
d = Domain(lon=lon, lat=lat)
self.assertEqual(type(d), Domain)
self.assertEqual(d.shape(), lat.shape)
def test_shape(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
shape = d.shape()
self.assertEqual(shape, (500, 500))
print 'Output file:', oFileName, '\n'
''' Domain class is a container for geographical reference of a raster
A Domain object describes all attributes of geographical
reference of a raster:
width and height, pixel size,
relation between pixel/line coordinates and geographical coordinates,
type of data projection (e.g. geographical or stereographic)
'''
# Create Domain object. It describes the desired grid of reprojected image:
# projection, resolution, size, etc. In this case it is geographic projection;
# -10 - 30 E, 50 - 70 W; 2000 x 2000 pixels
d = Domain("+proj=latlong +datum=WGS84 +ellps=WGS84 +no_defs",
"-te 25 70 35 72 -ts 2000 2000")
d = Domain(4326, "-te 25 70 35 72 -ts 2000 2000")
d.write_map(oFileName + '01_latlong_map.png')
print 'Latlong Domain:', d, '\n'
# get shape
print 'shape:', d.shape(), '\n'
# Generate two vectors with values of lat/lon for the border of domain
lonVec, latVec = d.get_border()
print 'lonVec :', lonVec, '\n'
print 'latVec :', latVec, '\n'
# Get upwards azimuth direction of domain.
bearing_center = d.upwards_azimuth_direction()
print 'bearing_center :', bearing_center, '\n'
def test_azimuth_y(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
au = d.azimuth_y()
self.assertEqual(np.round(au[0, 0]), 0)
self.assertEqual(np.round(au[10, 10]), 0)
def test_transform_points_inverse(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
x, y = d.transform_points([25, 26, 27], [70, 71, 72], 1)
self.assertTrue(all(np.round(x) == [0, 50, 100]))
self.assertTrue(all(np.round(y) == [500, 250, 0]))
def test_get_border_wkt(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
bwkt = d.get_border_wkt()
self.assertEqual(type(bwkt), str)
self.assertTrue('POLYGON' in bwkt)
def test_get_border_geometry(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
geom = d.get_border_geometry()
self.assertEqual(type(geom), ogr.Geometry)
def test_get_corners(self):
d = Domain(4326, "-te 25 70 35 72 -ts 500 500")
lon, lat = d.get_corners()
self.assertTrue(all(lon - [25., 25., 35., 35.] < 0.01))
self.assertTrue(all(lat - [72., 70., 72., 70.] < 0.01))