129 строки
3.8 KiB
Python
Исполняемый файл
129 строки
3.8 KiB
Python
Исполняемый файл
#!/usr/bin/env pytest
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###############################################################################
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# $Id$
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#
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# Project: GDAL/OGR Test Suite
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# Purpose: Test ComputeProximity() algorithm.
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# Author: Frank Warmerdam <warmerdam@pobox.com>
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#
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###############################################################################
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# Copyright (c) 2008, Frank Warmerdam <warmerdam@pobox.com>
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the "Software"),
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# to deal in the Software without restriction, including without limitation
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# the rights to use, copy, modify, merge, publish, distribute, sublicense,
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# and/or sell copies of the Software, and to permit persons to whom the
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# Software is furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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# DEALINGS IN THE SOFTWARE.
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###############################################################################
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import pytest
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from osgeo import gdal
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###############################################################################
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# Test a fairly default case.
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def test_proximity_1():
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drv = gdal.GetDriverByName("GTiff")
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src_ds = gdal.Open("data/pat.tif")
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src_band = src_ds.GetRasterBand(1)
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dst_ds = drv.Create("tmp/proximity_1.tif", 25, 25, 1, gdal.GDT_Byte)
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dst_band = dst_ds.GetRasterBand(1)
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gdal.ComputeProximity(src_band, dst_band)
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cs_expected = 1941
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cs = dst_band.Checksum()
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dst_band = None
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dst_ds = None
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if cs == cs_expected or gdal.GetConfigOption("CPL_DEBUG", "OFF") != "ON":
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drv.Delete("tmp/proximity_1.tif")
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if cs != cs_expected:
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print("Got: ", cs)
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pytest.fail("got wrong checksum")
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###############################################################################
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# Try several options
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def test_proximity_2():
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drv = gdal.GetDriverByName("GTiff")
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src_ds = gdal.Open("data/pat.tif")
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src_band = src_ds.GetRasterBand(1)
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dst_ds = drv.Create("tmp/proximity_2.tif", 25, 25, 1, gdal.GDT_Float32)
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dst_band = dst_ds.GetRasterBand(1)
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gdal.ComputeProximity(
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src_band,
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dst_band,
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options=["VALUES=65,64", "MAXDIST=12", "NODATA=-1", "FIXED_BUF_VAL=255"],
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)
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cs_expected = 3256
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cs = dst_band.Checksum()
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dst_band = None
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dst_ds = None
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if cs == cs_expected or gdal.GetConfigOption("CPL_DEBUG", "OFF") != "ON":
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drv.Delete("tmp/proximity_2.tif")
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if cs != cs_expected:
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print("Got: ", cs)
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pytest.fail("got wrong checksum")
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###############################################################################
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# Try input nodata option
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def test_proximity_3():
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drv = gdal.GetDriverByName("GTiff")
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src_ds = gdal.Open("data/pat.tif")
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src_band = src_ds.GetRasterBand(1)
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dst_ds = drv.Create("tmp/proximity_3.tif", 25, 25, 1, gdal.GDT_Byte)
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dst_band = dst_ds.GetRasterBand(1)
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gdal.ComputeProximity(
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src_band,
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dst_band,
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options=["VALUES=65,64", "MAXDIST=12", "USE_INPUT_NODATA=YES", "NODATA=0"],
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)
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cs_expected = 1465
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cs = dst_band.Checksum()
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dst_band = None
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dst_ds = None
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if cs == cs_expected or gdal.GetConfigOption("CPL_DEBUG", "OFF") != "ON":
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drv.Delete("tmp/proximity_3.tif")
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if cs != cs_expected:
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print("Got: ", cs)
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pytest.fail("got wrong checksum")
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