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119 lines
4.3 KiB
Python
119 lines
4.3 KiB
Python
"""
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gdalinfo django/contrib/gis/gdal/tests/data/raster.tif:
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Driver: GTiff/GeoTIFF
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Files: django/contrib/gis/gdal/tests/data/raster.tif
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Size is 163, 174
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Coordinate System is:
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PROJCS["NAD83 / Florida GDL Albers",
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GEOGCS["NAD83",
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DATUM["North_American_Datum_1983",
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SPHEROID["GRS 1980",6378137,298.2572221010002,
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AUTHORITY["EPSG","7019"]],
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TOWGS84[0,0,0,0,0,0,0],
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AUTHORITY["EPSG","6269"]],
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PRIMEM["Greenwich",0],
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UNIT["degree",0.0174532925199433],
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AUTHORITY["EPSG","4269"]],
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PROJECTION["Albers_Conic_Equal_Area"],
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PARAMETER["standard_parallel_1",24],
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PARAMETER["standard_parallel_2",31.5],
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PARAMETER["latitude_of_center",24],
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PARAMETER["longitude_of_center",-84],
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PARAMETER["false_easting",400000],
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PARAMETER["false_northing",0],
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UNIT["metre",1,
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AUTHORITY["EPSG","9001"]],
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AUTHORITY["EPSG","3086"]]
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Origin = (511700.468070655711927,435103.377123198588379)
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Pixel Size = (100.000000000000000,-100.000000000000000)
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Metadata:
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AREA_OR_POINT=Area
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Image Structure Metadata:
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INTERLEAVE=BAND
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Corner Coordinates:
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Upper Left ( 511700.468, 435103.377) ( 82d51'46.16"W, 27d55' 1.53"N)
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Lower Left ( 511700.468, 417703.377) ( 82d51'52.04"W, 27d45'37.50"N)
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Upper Right ( 528000.468, 435103.377) ( 82d41'48.81"W, 27d54'56.30"N)
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Lower Right ( 528000.468, 417703.377) ( 82d41'55.54"W, 27d45'32.28"N)
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Center ( 519850.468, 426403.377) ( 82d46'50.64"W, 27d50'16.99"N)
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Band 1 Block=163x50 Type=Byte, ColorInterp=Gray
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NoData Value=15
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"""
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import os
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import unittest
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from django.contrib.gis.gdal import HAS_GDAL
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from django.utils import six
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from django.utils._os import upath
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if HAS_GDAL:
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from django.contrib.gis.gdal import GDALRaster
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from django.contrib.gis.gdal.raster.band import GDALBand
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@unittest.skipUnless(HAS_GDAL, "GDAL is required")
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class GDALRasterTests(unittest.TestCase):
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"""
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Test a GDALRaster instance created from a file (GeoTiff).
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"""
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def setUp(self):
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self.rs_path = os.path.join(os.path.dirname(upath(__file__)),
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'data/raster.tif')
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self.rs = GDALRaster(self.rs_path)
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def test_rs_name_repr(self):
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self.assertEqual(self.rs_path, self.rs.name)
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six.assertRegex(self, repr(self.rs), "<Raster object at 0x\w+>")
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def test_rs_driver(self):
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self.assertEqual(self.rs.driver.name, 'GTiff')
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def test_rs_size(self):
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self.assertEqual(self.rs.width, 163)
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self.assertEqual(self.rs.height, 174)
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def test_rs_srs(self):
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self.assertEqual(self.rs.srs.srid, 3086)
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self.assertEqual(self.rs.srs.units, (1.0, 'metre'))
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def test_geotransform_and_friends(self):
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self.assertEqual(self.rs.geotransform,
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(511700.4680706557, 100.0, 0.0, 435103.3771231986, 0.0, -100.0))
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self.assertEqual(self.rs.origin, [511700.4680706557, 435103.3771231986])
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self.assertEqual(self.rs.origin.x, 511700.4680706557)
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self.assertEqual(self.rs.origin.y, 435103.3771231986)
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self.assertEqual(self.rs.scale, [100.0, -100.0])
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self.assertEqual(self.rs.scale.x, 100.0)
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self.assertEqual(self.rs.scale.y, -100.0)
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self.assertEqual(self.rs.skew, [0, 0])
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self.assertEqual(self.rs.skew.x, 0)
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self.assertEqual(self.rs.skew.y, 0)
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def test_rs_extent(self):
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self.assertEqual(self.rs.extent,
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(511700.4680706557, 417703.3771231986, 528000.4680706557, 435103.3771231986))
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def test_rs_bands(self):
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self.assertEqual(len(self.rs.bands), 1)
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self.assertIsInstance(self.rs.bands[0], GDALBand)
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@unittest.skipUnless(HAS_GDAL, "GDAL is required")
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class GDALBandTests(unittest.TestCase):
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def setUp(self):
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rs_path = os.path.join(os.path.dirname(upath(__file__)),
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'data/raster.tif')
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rs = GDALRaster(rs_path)
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self.band = rs.bands[0]
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def test_band_data(self):
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self.assertEqual(self.band.width, 163)
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self.assertEqual(self.band.height, 174)
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self.assertEqual(self.band.description, '')
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self.assertEqual(self.band.datatype(), 1)
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self.assertEqual(self.band.datatype(as_string=True), 'GDT_Byte')
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self.assertEqual(self.band.min, 0)
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self.assertEqual(self.band.max, 255)
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self.assertEqual(self.band.nodata_value, 15)
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