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262 lines
12 KiB
Python
262 lines
12 KiB
Python
import unittest
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from unittest import skipUnless
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from django.contrib.gis.gdal import HAS_GDAL
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if HAS_GDAL:
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from django.contrib.gis.gdal import SpatialReference, CoordTransform, GDALException, SRSException
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class TestSRS:
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def __init__(self, wkt, **kwargs):
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self.wkt = wkt
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for key, value in kwargs.items():
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setattr(self, key, value)
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WGS84_proj = '+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs '
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# Some Spatial Reference examples
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srlist = (
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TestSRS(
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'GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS 84",6378137,298.257223563,'
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'AUTHORITY["EPSG","7030"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6326"]],'
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'PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",'
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'0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4326"]]',
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epsg=4326, projected=False, geographic=True, local=False,
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lin_name='unknown', ang_name='degree', lin_units=1.0, ang_units=0.0174532925199,
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auth={'GEOGCS': ('EPSG', '4326'), 'spheroid': ('EPSG', '7030')},
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attr=(('DATUM', 'WGS_1984'), (('SPHEROID', 1), '6378137'), ('primem|authority', 'EPSG'),),
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),
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TestSRS(
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'PROJCS["NAD83 / Texas South Central",GEOGCS["NAD83",DATUM["North_American_Datum_1983",'
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'SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],'
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'AUTHORITY["EPSG","6269"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],'
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'UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],'
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'AUTHORITY["EPSG","4269"]],PROJECTION["Lambert_Conformal_Conic_2SP"],'
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'PARAMETER["standard_parallel_1",30.28333333333333],'
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'PARAMETER["standard_parallel_2",28.38333333333333],'
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'PARAMETER["latitude_of_origin",27.83333333333333],'
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'PARAMETER["central_meridian",-99],PARAMETER["false_easting",600000],'
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'PARAMETER["false_northing",4000000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],'
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'AUTHORITY["EPSG","32140"]]',
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epsg=32140, projected=True, geographic=False, local=False,
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lin_name='metre', ang_name='degree', lin_units=1.0, ang_units=0.0174532925199,
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auth={'PROJCS': ('EPSG', '32140'), 'spheroid': ('EPSG', '7019'), 'unit': ('EPSG', '9001')},
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attr=(
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('DATUM', 'North_American_Datum_1983'),
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(('SPHEROID', 2), '298.257222101'),
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('PROJECTION', 'Lambert_Conformal_Conic_2SP'),
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),
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),
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TestSRS(
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'PROJCS["NAD_1983_StatePlane_Texas_South_Central_FIPS_4204_Feet",'
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'GEOGCS["GCS_North_American_1983",DATUM["North_American_Datum_1983",'
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'SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],'
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'UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic_2SP"],'
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'PARAMETER["False_Easting",1968500.0],PARAMETER["False_Northing",13123333.33333333],'
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'PARAMETER["Central_Meridian",-99.0],PARAMETER["Standard_Parallel_1",28.38333333333333],'
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'PARAMETER["Standard_Parallel_2",30.28333333333334],PARAMETER["Latitude_Of_Origin",27.83333333333333],'
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'UNIT["Foot_US",0.3048006096012192]]',
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epsg=None, projected=True, geographic=False, local=False,
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lin_name='Foot_US', ang_name='Degree', lin_units=0.3048006096012192, ang_units=0.0174532925199,
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auth={'PROJCS': (None, None)},
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attr=(('PROJCS|GeOgCs|spheroid', 'GRS_1980'), (('projcs', 9), 'UNIT'), (('projcs', 11), None),),
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),
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# This is really ESRI format, not WKT -- but the import should work the same
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TestSRS(
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'LOCAL_CS["Non-Earth (Meter)",LOCAL_DATUM["Local Datum",0],UNIT["Meter",1.0],AXIS["X",EAST],AXIS["Y",NORTH]]',
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esri=True, epsg=None, projected=False, geographic=False, local=True,
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lin_name='Meter', ang_name='degree', lin_units=1.0, ang_units=0.0174532925199,
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attr=(('LOCAL_DATUM', 'Local Datum'), ('unit', 'Meter')),
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),
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)
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# Well-Known Names
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well_known = (
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TestSRS(
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'GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS 84",6378137,298.257223563,'
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'AUTHORITY["EPSG","7030"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6326"]],'
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'PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,'
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'AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4326"]]',
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wk='WGS84', name='WGS 84',
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attrs=(('GEOGCS|AUTHORITY', 1, '4326'), ('SPHEROID', 'WGS 84')),
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),
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TestSRS(
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'GEOGCS["WGS 72",DATUM["WGS_1972",SPHEROID["WGS 72",6378135,298.26,'
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'AUTHORITY["EPSG","7043"]],AUTHORITY["EPSG","6322"]],'
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'PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],'
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'UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],'
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'AUTHORITY["EPSG","4322"]]',
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wk='WGS72', name='WGS 72',
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attrs=(('GEOGCS|AUTHORITY', 1, '4322'), ('SPHEROID', 'WGS 72')),
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),
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TestSRS(
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'GEOGCS["NAD27",DATUM["North_American_Datum_1927",'
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'SPHEROID["Clarke 1866",6378206.4,294.9786982138982,'
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'AUTHORITY["EPSG","7008"]],AUTHORITY["EPSG","6267"]],'
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'PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],'
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'UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],'
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'AUTHORITY["EPSG","4267"]]',
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wk='NAD27', name='NAD27',
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attrs=(('GEOGCS|AUTHORITY', 1, '4267'), ('SPHEROID', 'Clarke 1866'))
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),
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TestSRS(
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'GEOGCS["NAD83",DATUM["North_American_Datum_1983",'
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'SPHEROID["GRS 1980",6378137,298.257222101,'
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'AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","6269"]],'
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'PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],'
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'UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],'
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'AUTHORITY["EPSG","4269"]]',
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wk='NAD83', name='NAD83',
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attrs=(('GEOGCS|AUTHORITY', 1, '4269'), ('SPHEROID', 'GRS 1980')),
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),
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TestSRS(
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'PROJCS["NZGD49 / Karamea Circuit",GEOGCS["NZGD49",'
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'DATUM["New_Zealand_Geodetic_Datum_1949",'
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'SPHEROID["International 1924",6378388,297,'
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'AUTHORITY["EPSG","7022"]],'
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'TOWGS84[59.47,-5.04,187.44,0.47,-0.1,1.024,-4.5993],'
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'AUTHORITY["EPSG","6272"]],PRIMEM["Greenwich",0,'
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'AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,'
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'AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4272"]],'
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'PROJECTION["Transverse_Mercator"],'
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'PARAMETER["latitude_of_origin",-41.28991152777778],'
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'PARAMETER["central_meridian",172.1090281944444],'
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'PARAMETER["scale_factor",1],PARAMETER["false_easting",300000],'
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'PARAMETER["false_northing",700000],'
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'UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","27216"]]',
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wk='EPSG:27216', name='NZGD49 / Karamea Circuit',
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attrs=(('PROJECTION', 'Transverse_Mercator'), ('SPHEROID', 'International 1924')),
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),
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)
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bad_srlist = (
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'Foobar',
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'OOJCS["NAD83 / Texas South Central",GEOGCS["NAD83",'
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'DATUM["North_American_Datum_1983",'
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'SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],'
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'AUTHORITY["EPSG","6269"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],'
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'UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],'
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'AUTHORITY["EPSG","4269"]],PROJECTION["Lambert_Conformal_Conic_2SP"],'
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'PARAMETER["standard_parallel_1",30.28333333333333],'
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'PARAMETER["standard_parallel_2",28.38333333333333],'
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'PARAMETER["latitude_of_origin",27.83333333333333],'
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'PARAMETER["central_meridian",-99],PARAMETER["false_easting",600000],'
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'PARAMETER["false_northing",4000000],UNIT["metre",1,'
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'AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","32140"]]',
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)
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@skipUnless(HAS_GDAL, "GDAL is required")
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class SpatialRefTest(unittest.TestCase):
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def test01_wkt(self):
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"Testing initialization on valid OGC WKT."
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for s in srlist:
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SpatialReference(s.wkt)
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def test02_bad_wkt(self):
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"Testing initialization on invalid WKT."
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for bad in bad_srlist:
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try:
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srs = SpatialReference(bad)
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srs.validate()
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except (SRSException, GDALException):
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pass
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else:
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self.fail('Should not have initialized on bad WKT "%s"!')
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def test03_get_wkt(self):
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"Testing getting the WKT."
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for s in srlist:
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srs = SpatialReference(s.wkt)
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self.assertEqual(s.wkt, srs.wkt)
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def test04_proj(self):
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"Test PROJ.4 import and export."
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proj_parts = [
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'+proj=longlat', '+ellps=WGS84', '+towgs84=0,0,0,0,0,0,0', '+datum=WGS84', '+no_defs'
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]
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srs1 = SpatialReference(srlist[0].wkt)
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srs2 = SpatialReference(WGS84_proj)
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self.assertTrue(all([part in proj_parts for part in srs1.proj.split()]))
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self.assertTrue(all([part in proj_parts for part in srs2.proj.split()]))
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def test05_epsg(self):
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"Test EPSG import."
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for s in srlist:
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if s.epsg:
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srs1 = SpatialReference(s.wkt)
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srs2 = SpatialReference(s.epsg)
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srs3 = SpatialReference(str(s.epsg))
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srs4 = SpatialReference('EPSG:%d' % s.epsg)
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for srs in (srs1, srs2, srs3, srs4):
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for attr, expected in s.attr:
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self.assertEqual(expected, srs[attr])
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def test07_boolean_props(self):
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"Testing the boolean properties."
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for s in srlist:
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srs = SpatialReference(s.wkt)
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self.assertEqual(s.projected, srs.projected)
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self.assertEqual(s.geographic, srs.geographic)
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def test08_angular_linear(self):
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"Testing the linear and angular units routines."
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for s in srlist:
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srs = SpatialReference(s.wkt)
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self.assertEqual(s.ang_name, srs.angular_name)
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self.assertEqual(s.lin_name, srs.linear_name)
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self.assertAlmostEqual(s.ang_units, srs.angular_units, 9)
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self.assertAlmostEqual(s.lin_units, srs.linear_units, 9)
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def test09_authority(self):
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"Testing the authority name & code routines."
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for s in srlist:
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if hasattr(s, 'auth'):
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srs = SpatialReference(s.wkt)
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for target, tup in s.auth.items():
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self.assertEqual(tup[0], srs.auth_name(target))
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self.assertEqual(tup[1], srs.auth_code(target))
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def test10_attributes(self):
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"Testing the attribute retrieval routines."
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for s in srlist:
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srs = SpatialReference(s.wkt)
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for tup in s.attr:
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att = tup[0] # Attribute to test
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exp = tup[1] # Expected result
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self.assertEqual(exp, srs[att])
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def test11_wellknown(self):
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"Testing Well Known Names of Spatial References."
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for s in well_known:
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srs = SpatialReference(s.wk)
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self.assertEqual(s.name, srs.name)
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for tup in s.attrs:
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if len(tup) == 2:
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key = tup[0]
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exp = tup[1]
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elif len(tup) == 3:
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key = tup[:2]
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exp = tup[2]
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self.assertEqual(srs[key], exp)
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def test12_coordtransform(self):
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"Testing initialization of a CoordTransform."
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target = SpatialReference('WGS84')
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CoordTransform(SpatialReference(srlist[0].wkt), target)
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def test13_attr_value(self):
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"Testing the attr_value() method."
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s1 = SpatialReference('WGS84')
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with self.assertRaises(TypeError):
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s1.__getitem__(0)
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with self.assertRaises(TypeError):
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s1.__getitem__(('GEOGCS', 'foo'))
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self.assertEqual('WGS 84', s1['GEOGCS'])
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self.assertEqual('WGS_1984', s1['DATUM'])
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self.assertEqual('EPSG', s1['AUTHORITY'])
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self.assertEqual(4326, int(s1['AUTHORITY', 1]))
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self.assertIsNone(s1['FOOBAR'])
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