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GdalAlgorithmsTest.py
2424 lines (2193 loc) · 117 KB
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GdalAlgorithmsTest.py
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# -*- coding: utf-8 -*-
"""
***************************************************************************
GdalAlgorithmTests.py
---------------------
Date : January 2016
Copyright : (C) 2016 by Matthias Kuhn
Email : matthias@opengis.ch
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************
"""
__author__ = 'Matthias Kuhn'
__date__ = 'January 2016'
__copyright__ = '(C) 2016, Matthias Kuhn'
# This will get replaced with a git SHA1 when you do a git archive
__revision__ = ':%H$'
import AlgorithmsTestBase
from processing.algs.gdal.OgrToPostGis import OgrToPostGis
from processing.algs.gdal.GdalUtils import GdalUtils
from processing.algs.gdal.AssignProjection import AssignProjection
from processing.algs.gdal.Buffer import Buffer
from processing.algs.gdal.ClipRasterByExtent import ClipRasterByExtent
from processing.algs.gdal.ClipRasterByMask import ClipRasterByMask
from processing.algs.gdal.Dissolve import Dissolve
from processing.algs.gdal.gdal2tiles import gdal2tiles
from processing.algs.gdal.gdalcalc import gdalcalc
from processing.algs.gdal.gdaltindex import gdaltindex
from processing.algs.gdal.contour import contour
from processing.algs.gdal.gdalinfo import gdalinfo
from processing.algs.gdal.GridAverage import GridAverage
from processing.algs.gdal.GridDataMetrics import GridDataMetrics
from processing.algs.gdal.GridInverseDistance import GridInverseDistance
from processing.algs.gdal.GridInverseDistanceNearestNeighbor import GridInverseDistanceNearestNeighbor
from processing.algs.gdal.GridLinear import GridLinear
from processing.algs.gdal.GridNearestNeighbor import GridNearestNeighbor
from processing.algs.gdal.buildvrt import buildvrt
from processing.algs.gdal.hillshade import hillshade
from processing.algs.gdal.ogr2ogr import ogr2ogr
from processing.algs.gdal.ogrinfo import ogrinfo
from processing.algs.gdal.OffsetCurve import OffsetCurve
from processing.algs.gdal.OgrToPostGis import OgrToPostGis
from processing.algs.gdal.OneSideBuffer import OneSideBuffer
from processing.algs.gdal.PointsAlongLines import PointsAlongLines
from processing.algs.gdal.proximity import proximity
from processing.algs.gdal.rasterize import rasterize
from processing.algs.gdal.retile import retile
from processing.algs.gdal.translate import translate
from processing.algs.gdal.warp import warp
from processing.algs.gdal.fillnodata import fillnodata
from processing.algs.gdal.rearrange_bands import rearrange_bands
from processing.tools.system import isWindows
from qgis.core import (QgsProcessingContext,
QgsProcessingFeedback,
QgsCoordinateReferenceSystem,
QgsApplication,
QgsFeature,
QgsGeometry,
QgsPointXY,
QgsProject,
QgsVectorLayer,
QgsRectangle,
QgsProcessingException,
QgsProcessingFeatureSourceDefinition)
import nose2
import os
import shutil
import tempfile
from qgis.testing import (
start_app,
unittest
)
testDataPath = os.path.join(os.path.dirname(__file__), 'testdata')
class TestGdalAlgorithms(unittest.TestCase, AlgorithmsTestBase.AlgorithmsTest):
@classmethod
def setUpClass(cls):
start_app()
from processing.core.Processing import Processing
Processing.initialize()
cls.cleanup_paths = []
@classmethod
def tearDownClass(cls):
for path in cls.cleanup_paths:
shutil.rmtree(path)
def test_definition_file(self):
return 'gdal_algorithm_tests.yaml'
def testCommandName(self):
# Test that algorithms report a valid commandName
p = QgsApplication.processingRegistry().providerById('gdal')
for a in p.algorithms():
self.assertTrue(a.commandName(), 'Algorithm {} has no commandName!'.format(a.id()))
def testCommandNameInTags(self):
# Test that algorithms commandName is present in provided tags
p = QgsApplication.processingRegistry().providerById('gdal')
for a in p.algorithms():
self.assertTrue(a.commandName() in a.tags(), 'Algorithm {} commandName not found in tags!'.format(a.id()))
def testNoParameters(self):
# Test that algorithms throw QgsProcessingExceptions and not base Python
# exceptions when no parameters specified
p = QgsApplication.processingRegistry().providerById('gdal')
context = QgsProcessingContext()
feedback = QgsProcessingFeedback()
for a in p.algorithms():
try:
a.getConsoleCommands({}, context, feedback)
except QgsProcessingException:
pass
def testGetOgrCompatibleSourceFromMemoryLayer(self):
# create a memory layer and add to project and context
layer = QgsVectorLayer("Point?field=fldtxt:string&field=fldint:integer",
"testmem", "memory")
self.assertTrue(layer.isValid())
pr = layer.dataProvider()
f = QgsFeature()
f.setAttributes(["test", 123])
f.setGeometry(QgsGeometry.fromPointXY(QgsPointXY(100, 200)))
f2 = QgsFeature()
f2.setAttributes(["test2", 457])
f2.setGeometry(QgsGeometry.fromPointXY(QgsPointXY(100, 200)))
self.assertTrue(pr.addFeatures([f, f2]))
self.assertEqual(layer.featureCount(), 2)
QgsProject.instance().addMapLayer(layer)
context = QgsProcessingContext()
context.setProject(QgsProject.instance())
alg = QgsApplication.processingRegistry().createAlgorithmById('gdal:buffervectors')
self.assertIsNotNone(alg)
parameters = {'INPUT': 'testmem'}
feedback = QgsProcessingFeedback()
# check that memory layer is automatically saved out to shape when required by GDAL algorithms
ogr_data_path, ogr_layer_name = alg.getOgrCompatibleSource('INPUT', parameters, context, feedback,
executing=True)
self.assertTrue(ogr_data_path)
self.assertTrue(ogr_data_path.endswith('.shp'))
self.assertTrue(os.path.exists(ogr_data_path))
self.assertTrue(ogr_layer_name)
# make sure that layer has correct features
res = QgsVectorLayer(ogr_data_path, 'res')
self.assertTrue(res.isValid())
self.assertEqual(res.featureCount(), 2)
# with memory layers - if not executing layer source should be ignored and replaced
# with a dummy path, because:
# - it has no meaning for the gdal command outside of QGIS, memory layers don't exist!
# - we don't want to force an export of the whole memory layer to a temp file just to show the command preview
# this might be very slow!
ogr_data_path, ogr_layer_name = alg.getOgrCompatibleSource('INPUT', parameters, context, feedback,
executing=False)
self.assertEqual(ogr_data_path, 'path_to_data_file')
self.assertEqual(ogr_layer_name, 'layer_name')
QgsProject.instance().removeMapLayer(layer)
def testGetOgrCompatibleSourceFromOgrLayer(self):
p = QgsProject()
source = os.path.join(testDataPath, 'points.gml')
vl = QgsVectorLayer(source)
self.assertTrue(vl.isValid())
p.addMapLayer(vl)
context = QgsProcessingContext()
context.setProject(p)
feedback = QgsProcessingFeedback()
alg = ogr2ogr()
alg.initAlgorithm()
path, layer = alg.getOgrCompatibleSource('INPUT', {'INPUT': vl.id()}, context, feedback, True)
self.assertEqual(path, source)
path, layer = alg.getOgrCompatibleSource('INPUT', {'INPUT': vl.id()}, context, feedback, False)
self.assertEqual(path, source)
# with selected features only - if not executing, the 'selected features only' setting
# should be ignored (because it has no meaning for the gdal command outside of QGIS!)
parameters = {'INPUT': QgsProcessingFeatureSourceDefinition(vl.id(), True)}
path, layer = alg.getOgrCompatibleSource('INPUT', parameters, context, feedback, False)
self.assertEqual(path, source)
# geopackage with layer
source = os.path.join(testDataPath, 'custom', 'circular_strings.gpkg')
vl2 = QgsVectorLayer(source + '|layername=circular_strings')
self.assertTrue(vl2.isValid())
p.addMapLayer(vl2)
path, layer = alg.getOgrCompatibleSource('INPUT', {'INPUT': vl2.id()}, context, feedback, True)
self.assertEqual(path, source)
self.assertEqual(layer, 'circular_strings')
vl3 = QgsVectorLayer(source + '|layername=circular_strings_with_line')
self.assertTrue(vl3.isValid())
p.addMapLayer(vl3)
path, layer = alg.getOgrCompatibleSource('INPUT', {'INPUT': vl3.id()}, context, feedback, True)
self.assertEqual(path, source)
self.assertEqual(layer, 'circular_strings_with_line')
def testGetOgrCompatibleSourceFromFeatureSource(self):
# create a memory layer and add to project and context
layer = QgsVectorLayer("Point?field=fldtxt:string&field=fldint:integer",
"testmem", "memory")
self.assertTrue(layer.isValid())
pr = layer.dataProvider()
f = QgsFeature()
f.setAttributes(["test", 123])
f.setGeometry(QgsGeometry.fromPointXY(QgsPointXY(100, 200)))
f2 = QgsFeature()
f2.setAttributes(["test2", 457])
f2.setGeometry(QgsGeometry.fromPointXY(QgsPointXY(100, 200)))
self.assertTrue(pr.addFeatures([f, f2]))
self.assertEqual(layer.featureCount(), 2)
# select first feature
layer.selectByIds([next(layer.getFeatures()).id()])
self.assertEqual(len(layer.selectedFeatureIds()), 1)
QgsProject.instance().addMapLayer(layer)
context = QgsProcessingContext()
context.setProject(QgsProject.instance())
alg = QgsApplication.processingRegistry().createAlgorithmById('gdal:buffervectors')
self.assertIsNotNone(alg)
parameters = {'INPUT': QgsProcessingFeatureSourceDefinition('testmem', True)}
feedback = QgsProcessingFeedback()
# check that memory layer is automatically saved out to shape when required by GDAL algorithms
ogr_data_path, ogr_layer_name = alg.getOgrCompatibleSource('INPUT', parameters, context, feedback,
executing=True)
self.assertTrue(ogr_data_path)
self.assertTrue(ogr_data_path.endswith('.shp'))
self.assertTrue(os.path.exists(ogr_data_path))
self.assertTrue(ogr_layer_name)
# make sure that layer has only selected feature
res = QgsVectorLayer(ogr_data_path, 'res')
self.assertTrue(res.isValid())
self.assertEqual(res.featureCount(), 1)
QgsProject.instance().removeMapLayer(layer)
def testOgrLayerNameExtraction(self):
with tempfile.TemporaryDirectory() as outdir:
def _copyFile(dst):
shutil.copyfile(os.path.join(testDataPath, 'custom', 'grass7', 'weighted.csv'), dst)
# OGR provider - single layer
_copyFile(os.path.join(outdir, 'a.csv'))
name = GdalUtils.ogrLayerName(outdir)
self.assertEqual(name, 'a')
# OGR provider - multiple layers
_copyFile(os.path.join(outdir, 'b.csv'))
name1 = GdalUtils.ogrLayerName(outdir + '|layerid=0')
name2 = GdalUtils.ogrLayerName(outdir + '|layerid=1')
self.assertEqual(sorted([name1, name2]), ['a', 'b'])
name = GdalUtils.ogrLayerName(outdir + '|layerid=2')
self.assertIsNone(name)
# OGR provider - layername takes precedence
name = GdalUtils.ogrLayerName(outdir + '|layername=f')
self.assertEqual(name, 'f')
name = GdalUtils.ogrLayerName(outdir + '|layerid=0|layername=f')
self.assertEqual(name, 'f')
name = GdalUtils.ogrLayerName(outdir + '|layername=f|layerid=0')
self.assertEqual(name, 'f')
# SQLite provider
name = GdalUtils.ogrLayerName('dbname=\'/tmp/x.sqlite\' table="t" (geometry) sql=')
self.assertEqual(name, 't')
# PostgreSQL provider
name = GdalUtils.ogrLayerName(
'port=5493 sslmode=disable key=\'edge_id\' srid=0 type=LineString table="city_data"."edge" (geom) sql=')
self.assertEqual(name, 'city_data.edge')
def testOgrConnectionStringAndFormat(self):
context = QgsProcessingContext()
output, outputFormat = GdalUtils.ogrConnectionStringAndFormat('d:/test/test.shp', context)
self.assertEqual(output, 'd:/test/test.shp')
self.assertEqual(outputFormat, '"ESRI Shapefile"')
output, outputFormat = GdalUtils.ogrConnectionStringAndFormat('d:/test/test.mif', context)
self.assertEqual(output, 'd:/test/test.mif')
self.assertEqual(outputFormat, '"MapInfo File"')
def testCrsConversion(self):
self.assertFalse(GdalUtils.gdal_crs_string(QgsCoordinateReferenceSystem()))
self.assertEqual(GdalUtils.gdal_crs_string(QgsCoordinateReferenceSystem('EPSG:3111')), 'EPSG:3111')
self.assertEqual(GdalUtils.gdal_crs_string(QgsCoordinateReferenceSystem('POSTGIS:3111')), 'EPSG:3111')
self.assertEqual(GdalUtils.gdal_crs_string(QgsCoordinateReferenceSystem(
'proj4: +proj=utm +zone=36 +south +a=6378249.145 +b=6356514.966398753 +towgs84=-143,-90,-294,0,0,0,0 +units=m +no_defs')),
'EPSG:20936')
crs = QgsCoordinateReferenceSystem()
crs.createFromProj4(
'+proj=utm +zone=36 +south +a=600000 +b=70000 +towgs84=-143,-90,-294,0,0,0,0 +units=m +no_defs')
self.assertTrue(crs.isValid())
self.assertEqual(GdalUtils.gdal_crs_string(crs),
'+proj=utm +zone=36 +south +a=600000 +b=70000 +towgs84=-143,-90,-294,0,0,0,0 +units=m +no_defs')
# check that newlines are stripped
crs = QgsCoordinateReferenceSystem()
crs.createFromProj4(
'+proj=utm +zone=36 +south\n +a=600000 +b=70000 \r\n +towgs84=-143,-90,-294,0,0,0,0 +units=m\n+no_defs')
self.assertTrue(crs.isValid())
self.assertEqual(GdalUtils.gdal_crs_string(crs),
'+proj=utm +zone=36 +south +a=600000 +b=70000 +towgs84=-143,-90,-294,0,0,0,0 +units=m +no_defs')
def testAssignProjection(self):
context = QgsProcessingContext()
feedback = QgsProcessingFeedback()
source = os.path.join(testDataPath, 'dem.tif')
alg = AssignProjection()
alg.initAlgorithm()
# with target srs
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'CRS': 'EPSG:3111'}, context, feedback),
['gdal_edit.py',
'-a_srs EPSG:3111 ' +
source])
# with target using proj string
custom_crs = 'proj4: +proj=utm +zone=36 +south +a=6378249.145 +b=6356514.966398753 +towgs84=-143,-90,-294,0,0,0,0 +units=m +no_defs'
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'CRS': custom_crs}, context, feedback),
['gdal_edit.py',
'-a_srs EPSG:20936 ' +
source])
# with target using custom projection
custom_crs = 'proj4: +proj=utm +zone=36 +south +a=63785 +b=6357 +towgs84=-143,-90,-294,0,0,0,0 +units=m +no_defs'
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'CRS': custom_crs}, context, feedback),
['gdal_edit.py',
'-a_srs "+proj=utm +zone=36 +south +a=63785 +b=6357 +towgs84=-143,-90,-294,0,0,0,0 +units=m +no_defs" ' +
source])
# with non-EPSG crs code
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'CRS': 'POSTGIS:3111'}, context, feedback),
['gdal_edit.py',
'-a_srs EPSG:3111 ' +
source])
def testBuffer(self):
context = QgsProcessingContext()
feedback = QgsProcessingFeedback()
source = os.path.join(testDataPath, 'polys.gml')
source_with_space = os.path.join(testDataPath, 'filename with spaces.gml')
alg = Buffer()
alg.initAlgorithm()
with tempfile.TemporaryDirectory() as outdir:
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'DISTANCE': 5,
'OUTPUT': outdir + '/check.shp'}, context, feedback),
['ogr2ogr',
outdir + '/check.shp ' +
source + ' ' +
'-dialect sqlite -sql "SELECT ST_Buffer(geometry, 5.0) AS geometry,* FROM \'polys2\'" ' +
'-f "ESRI Shapefile"'])
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'DISTANCE': 5,
'DISSOLVE': True,
'OUTPUT': outdir + '/check.shp'}, context, feedback),
['ogr2ogr',
outdir + '/check.shp ' +
source + ' ' +
'-dialect sqlite -sql "SELECT ST_Union(ST_Buffer(geometry, 5.0)) AS geometry,* FROM \'polys2\'" ' +
'-f "ESRI Shapefile"'])
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'DISTANCE': 5,
'EXPLODE_COLLECTIONS': True,
'OUTPUT': outdir + '/check.shp'}, context, feedback),
['ogr2ogr',
outdir + '/check.shp ' +
source + ' ' +
'-dialect sqlite -sql "SELECT ST_Buffer(geometry, 5.0) AS geometry,* FROM \'polys2\'" ' +
'-explodecollections -f "ESRI Shapefile"'])
def testGdalTranslate(self):
context = QgsProcessingContext()
feedback = QgsProcessingFeedback()
source = os.path.join(testDataPath, 'dem.tif')
translate_alg = translate()
translate_alg.initAlgorithm()
with tempfile.TemporaryDirectory() as outdir:
# with no NODATA value
self.assertEqual(
translate_alg.getConsoleCommands({'INPUT': source,
'OUTPUT': outdir + '/check.jpg'}, context, feedback),
['gdal_translate',
'-of JPEG ' +
source + ' ' +
outdir + '/check.jpg'])
# with None NODATA value
self.assertEqual(
translate_alg.getConsoleCommands({'INPUT': source,
'NODATA': None,
'OUTPUT': outdir + '/check.jpg'}, context, feedback),
['gdal_translate',
'-of JPEG ' +
source + ' ' +
outdir + '/check.jpg'])
# with NODATA value
self.assertEqual(
translate_alg.getConsoleCommands({'INPUT': source,
'NODATA': 9999,
'OUTPUT': outdir + '/check.jpg'}, context, feedback),
['gdal_translate',
'-a_nodata 9999.0 ' +
'-of JPEG ' +
source + ' ' +
outdir + '/check.jpg'])
# with "0" NODATA value
self.assertEqual(
translate_alg.getConsoleCommands({'INPUT': source,
'NODATA': 0,
'OUTPUT': outdir + '/check.jpg'}, context, feedback),
['gdal_translate',
'-a_nodata 0.0 ' +
'-of JPEG ' +
source + ' ' +
outdir + '/check.jpg'])
# with "0" NODATA value and custom data type
self.assertEqual(
translate_alg.getConsoleCommands({'INPUT': source,
'NODATA': 0,
'DATA_TYPE': 6,
'OUTPUT': outdir + '/check.jpg'}, context, feedback),
['gdal_translate',
'-a_nodata 0.0 ' +
'-ot Float32 -of JPEG ' +
source + ' ' +
outdir + '/check.jpg'])
# with target srs
self.assertEqual(
translate_alg.getConsoleCommands({'INPUT': source,
'TARGET_CRS': 'EPSG:3111',
'OUTPUT': outdir + '/check.jpg'}, context, feedback),
['gdal_translate',
'-a_srs EPSG:3111 ' +
'-of JPEG ' +
source + ' ' +
outdir + '/check.jpg'])
# with target using proj string
custom_crs = 'proj4: +proj=utm +zone=36 +south +a=6378249.145 +b=6356514.966398753 +towgs84=-143,-90,-294,0,0,0,0 +units=m +no_defs'
self.assertEqual(
translate_alg.getConsoleCommands({'INPUT': source,
'TARGET_CRS': custom_crs,
'OUTPUT': outdir + '/check.jpg'}, context, feedback),
['gdal_translate',
'-a_srs EPSG:20936 ' +
'-of JPEG ' +
source + ' ' +
outdir + '/check.jpg'])
# with target using custom projection
custom_crs = 'proj4: +proj=utm +zone=36 +south +a=63785 +b=6357 +towgs84=-143,-90,-294,0,0,0,0 +units=m +no_defs'
self.assertEqual(
translate_alg.getConsoleCommands({'INPUT': source,
'TARGET_CRS': custom_crs,
'OUTPUT': outdir + '/check.jpg'}, context, feedback),
['gdal_translate',
'-a_srs "+proj=utm +zone=36 +south +a=63785 +b=6357 +towgs84=-143,-90,-294,0,0,0,0 +units=m +no_defs" ' +
'-of JPEG ' +
source + ' ' +
outdir + '/check.jpg'])
# with non-EPSG crs code
self.assertEqual(
translate_alg.getConsoleCommands({'INPUT': source,
'TARGET_CRS': 'POSTGIS:3111',
'OUTPUT': outdir + '/check.jpg'}, context, feedback),
['gdal_translate',
'-a_srs EPSG:3111 ' +
'-of JPEG ' +
source + ' ' +
outdir + '/check.jpg'])
# with copy subdatasets
self.assertEqual(
translate_alg.getConsoleCommands({'INPUT': source,
'COPY_SUBDATASETS': True,
'OUTPUT': outdir + '/check.tif'}, context, feedback),
['gdal_translate',
'-sds ' +
'-of GTiff ' +
source + ' ' +
outdir + '/check.tif'])
def testClipRasterByExtent(self):
context = QgsProcessingContext()
feedback = QgsProcessingFeedback()
source = os.path.join(testDataPath, 'dem.tif')
alg = ClipRasterByExtent()
alg.initAlgorithm()
extent = QgsRectangle(1, 2, 3, 4)
with tempfile.TemporaryDirectory() as outdir:
# with no NODATA value
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'EXTENT': extent,
'OUTPUT': outdir + '/check.jpg'}, context, feedback),
['gdal_translate',
'-projwin 0.0 0.0 0.0 0.0 -of JPEG ' +
source + ' ' +
outdir + '/check.jpg'])
# with NODATA value
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'EXTENT': extent,
'NODATA': 9999,
'OUTPUT': outdir + '/check.jpg'}, context, feedback),
['gdal_translate',
'-projwin 0.0 0.0 0.0 0.0 -a_nodata 9999.0 -of JPEG ' +
source + ' ' +
outdir + '/check.jpg'])
# with "0" NODATA value
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'EXTENT': extent,
'NODATA': 0,
'OUTPUT': outdir + '/check.jpg'}, context, feedback),
['gdal_translate',
'-projwin 0.0 0.0 0.0 0.0 -a_nodata 0.0 -of JPEG ' +
source + ' ' +
outdir + '/check.jpg'])
# with "0" NODATA value and custom data type
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'EXTENT': extent,
'NODATA': 0,
'DATA_TYPE': 6,
'OUTPUT': outdir + '/check.jpg'}, context, feedback),
['gdal_translate',
'-projwin 0.0 0.0 0.0 0.0 -a_nodata 0.0 -ot Float32 -of JPEG ' +
source + ' ' +
outdir + '/check.jpg'])
def testClipRasterByMask(self):
context = QgsProcessingContext()
feedback = QgsProcessingFeedback()
source = os.path.join(testDataPath, 'dem.tif')
mask = os.path.join(testDataPath, 'polys.gml')
alg = ClipRasterByMask()
alg.initAlgorithm()
with tempfile.TemporaryDirectory() as outdir:
# with no NODATA value
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'MASK': mask,
'OUTPUT': outdir + '/check.jpg'}, context, feedback),
['gdalwarp',
'-of JPEG -cutline ' +
mask + ' -crop_to_cutline ' + source + ' ' +
outdir + '/check.jpg'])
# with NODATA value
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'MASK': mask,
'NODATA': 9999,
'OUTPUT': outdir + '/check.jpg'}, context, feedback),
['gdalwarp',
'-of JPEG -cutline ' +
mask + ' -crop_to_cutline -dstnodata 9999.0 ' + source + ' ' +
outdir + '/check.jpg'])
# with "0" NODATA value
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'MASK': mask,
'NODATA': 0,
'OUTPUT': outdir + '/check.jpg'}, context, feedback),
['gdalwarp',
'-of JPEG -cutline ' +
mask + ' -crop_to_cutline -dstnodata 0.0 ' + source + ' ' +
outdir + '/check.jpg'])
# with "0" NODATA value and custom data type
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'MASK': mask,
'NODATA': 0,
'DATA_TYPE': 6,
'OUTPUT': outdir + '/check.jpg'}, context, feedback),
['gdalwarp',
'-ot Float32 -of JPEG -cutline ' +
mask + ' -crop_to_cutline -dstnodata 0.0 ' + source + ' ' +
outdir + '/check.jpg'])
def testContour(self):
context = QgsProcessingContext()
feedback = QgsProcessingFeedback()
source = os.path.join(testDataPath, 'dem.tif')
alg = contour()
alg.initAlgorithm()
with tempfile.TemporaryDirectory() as outdir:
# with no NODATA value
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'BAND': 1,
'FIELD_NAME': 'elev',
'INTERVAL': 5,
'OUTPUT': outdir + '/check.shp'}, context, feedback),
['gdal_contour',
'-b 1 -a elev -i 5.0 -f "ESRI Shapefile" ' +
source + ' ' +
outdir + '/check.shp'])
# with NODATA value
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'BAND': 1,
'FIELD_NAME': 'elev',
'INTERVAL': 5,
'NODATA': 9999,
'OUTPUT': outdir + '/check.shp'}, context, feedback),
['gdal_contour',
'-b 1 -a elev -i 5.0 -snodata 9999.0 -f "ESRI Shapefile" ' +
source + ' ' +
outdir + '/check.shp'])
# with "0" NODATA value
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'BAND': 1,
'FIELD_NAME': 'elev',
'INTERVAL': 5,
'NODATA': 0,
'OUTPUT': outdir + '/check.gpkg'}, context, feedback),
['gdal_contour',
'-b 1 -a elev -i 5.0 -snodata 0.0 -f "GPKG" ' +
source + ' ' +
outdir + '/check.gpkg'])
# fixed level contours
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'BAND': 1,
'FIELD_NAME': 'elev',
'INTERVAL': 0,
'OPTIONS': '-fl 100 125 150 200',
'OUTPUT': outdir + '/check.shp'}, context, feedback),
['gdal_contour',
'-b 1 -a elev -i 0.0 -fl 100 125 150 200 -f "ESRI Shapefile" ' +
source + ' ' +
outdir + '/check.shp'])
def testDissolve(self):
context = QgsProcessingContext()
feedback = QgsProcessingFeedback()
source = os.path.join(testDataPath, 'polys.gml')
source_with_space = os.path.join(testDataPath, 'filename with spaces.gml')
alg = Dissolve()
alg.initAlgorithm()
with tempfile.TemporaryDirectory() as outdir:
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'OUTPUT': outdir + '/check.shp'}, context, feedback),
['ogr2ogr',
outdir + '/check.shp ' +
source + ' ' +
'-dialect sqlite -sql "SELECT ST_Union(geometry) AS geometry FROM \'polys2\'" ' +
'-f "ESRI Shapefile"'])
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'FIELD': 'my_field',
'OUTPUT': outdir + '/check.shp'}, context, feedback),
['ogr2ogr',
outdir + '/check.shp ' +
source + ' ' +
'-dialect sqlite -sql "SELECT ST_Union(geometry) AS geometry, my_field FROM \'polys2\' ' +
'GROUP BY my_field" -f "ESRI Shapefile"'])
self.assertEqual(
alg.getConsoleCommands({'INPUT': source_with_space,
'FIELD': 'my_field',
'OUTPUT': outdir + '/check.shp'}, context, feedback),
['ogr2ogr',
outdir + '/check.shp ' +
'"' + source_with_space + '" ' +
'-dialect sqlite -sql "SELECT ST_Union(geometry) AS geometry, my_field FROM \'filename_with_spaces\' ' +
'GROUP BY my_field" -f "ESRI Shapefile"'])
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'FIELD': 'my_field',
'GEOMETRY': 'the_geom',
'OUTPUT': outdir + '/check.shp'}, context, feedback),
['ogr2ogr',
outdir + '/check.shp ' +
source + ' ' +
'-dialect sqlite -sql "SELECT ST_Union(the_geom) AS the_geom, my_field FROM \'polys2\' ' +
'GROUP BY my_field" -f "ESRI Shapefile"'])
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'FIELD': 'my_field',
'KEEP_ATTRIBUTES': False,
'OUTPUT': outdir + '/check.shp'}, context, feedback),
['ogr2ogr',
outdir + '/check.shp ' +
source + ' ' +
'-dialect sqlite -sql "SELECT ST_Union(geometry) AS geometry, my_field FROM \'polys2\' ' +
'GROUP BY my_field" -f "ESRI Shapefile"'])
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'KEEP_ATTRIBUTES': False,
'OUTPUT': outdir + '/check.shp'}, context, feedback),
['ogr2ogr',
outdir + '/check.shp ' +
source + ' ' +
'-dialect sqlite -sql "SELECT ST_Union(geometry) AS geometry FROM \'polys2\'" ' +
'-f "ESRI Shapefile"'])
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'FIELD': 'my_field',
'EXPLODE_COLLECTIONS': True,
'OUTPUT': outdir + '/check.shp'}, context, feedback),
['ogr2ogr',
outdir + '/check.shp ' +
source + ' ' +
'-dialect sqlite -sql "SELECT ST_Union(geometry) AS geometry, my_field FROM \'polys2\' ' +
'GROUP BY my_field" -explodecollections -f "ESRI Shapefile"'])
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'FIELD': 'my_field',
'COUNT_FEATURES': True,
'OUTPUT': outdir + '/check.shp'}, context, feedback),
['ogr2ogr',
outdir + '/check.shp ' +
source + ' ' +
'-dialect sqlite -sql "SELECT ST_Union(geometry) AS geometry, my_field, COUNT(geometry) AS count FROM \'polys2\' ' +
'GROUP BY my_field" -f "ESRI Shapefile"'])
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'FIELD': 'my_field',
'COUNT_FEATURES': True,
'GEOMETRY': 'the_geom',
'OUTPUT': outdir + '/check.shp'}, context, feedback),
['ogr2ogr',
outdir + '/check.shp ' +
source + ' ' +
'-dialect sqlite -sql "SELECT ST_Union(the_geom) AS the_geom, my_field, COUNT(the_geom) AS count FROM \'polys2\' ' +
'GROUP BY my_field" -f "ESRI Shapefile"'])
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'FIELD': 'my_field',
'COMPUTE_AREA': True,
'OUTPUT': outdir + '/check.shp'}, context, feedback),
['ogr2ogr',
outdir + '/check.shp ' +
source + ' ' +
'-dialect sqlite -sql "SELECT ST_Union(geometry) AS geometry, my_field, SUM(ST_Area(geometry)) AS area, ' +
'ST_Perimeter(ST_Union(geometry)) AS perimeter FROM \'polys2\' ' +
'GROUP BY my_field" -f "ESRI Shapefile"'])
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'FIELD': 'my_field',
'COMPUTE_AREA': True,
'GEOMETRY': 'the_geom',
'OUTPUT': outdir + '/check.shp'}, context, feedback),
['ogr2ogr',
outdir + '/check.shp ' +
source + ' ' +
'-dialect sqlite -sql "SELECT ST_Union(the_geom) AS the_geom, my_field, SUM(ST_Area(the_geom)) AS area, ' +
'ST_Perimeter(ST_Union(the_geom)) AS perimeter FROM \'polys2\' ' +
'GROUP BY my_field" -f "ESRI Shapefile"'])
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'FIELD': 'my_field',
'COMPUTE_STATISTICS': True,
'STATISTICS_ATTRIBUTE': 'my_val',
'OUTPUT': outdir + '/check.shp'}, context, feedback),
['ogr2ogr',
outdir + '/check.shp ' +
source + ' ' +
'-dialect sqlite -sql "SELECT ST_Union(geometry) AS geometry, my_field, ' +
'SUM(my_val) AS sum, MIN(my_val) AS min, MAX(my_val) AS max, AVG(my_val) AS avg FROM \'polys2\' ' +
'GROUP BY my_field" -f "ESRI Shapefile"'])
# compute stats without stats attribute, and vice versa (should be ignored)
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'FIELD': 'my_field',
'COMPUTE_STATISTICS': True,
'OUTPUT': outdir + '/check.shp'}, context, feedback),
['ogr2ogr',
outdir + '/check.shp ' +
source + ' ' +
'-dialect sqlite -sql "SELECT ST_Union(geometry) AS geometry, my_field FROM \'polys2\' ' +
'GROUP BY my_field" -f "ESRI Shapefile"'])
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'FIELD': 'my_field',
'STATISTICS_ATTRIBUTE': 'my_val',
'OUTPUT': outdir + '/check.shp'}, context, feedback),
['ogr2ogr',
outdir + '/check.shp ' +
source + ' ' +
'-dialect sqlite -sql "SELECT ST_Union(geometry) AS geometry, my_field FROM \'polys2\' ' +
'GROUP BY my_field" -f "ESRI Shapefile"'])
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'FIELD': 'my_field',
'OPTIONS': 'my opts',
'OUTPUT': outdir + '/check.shp'}, context, feedback),
['ogr2ogr',
outdir + '/check.shp ' +
source + ' ' +
'-dialect sqlite -sql "SELECT ST_Union(geometry) AS geometry, my_field FROM \'polys2\' ' +
'GROUP BY my_field" "my opts" -f "ESRI Shapefile"'])
def testGdal2Tiles(self):
context = QgsProcessingContext()
feedback = QgsProcessingFeedback()
source = os.path.join(testDataPath, 'dem.tif')
alg = gdal2tiles()
alg.initAlgorithm()
with tempfile.TemporaryDirectory() as outdir:
# with no NODATA value
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'OUTPUT': outdir + '/'}, context, feedback),
['gdal2tiles.py',
'-p mercator -w all -r average ' +
source + ' ' +
outdir + '/'])
# with NODATA value
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'NODATA': -9999,
'OUTPUT': outdir + '/'}, context, feedback),
['gdal2tiles.py',
'-p mercator -w all -r average -a -9999.0 ' +
source + ' ' +
outdir + '/'])
# with "0" NODATA value
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'NODATA': 0,
'OUTPUT': outdir + '/'}, context, feedback),
['gdal2tiles.py',
'-p mercator -w all -r average -a 0.0 ' +
source + ' ' +
outdir + '/'])
# with input srs
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'SOURCE_CRS': 'EPSG:3111',
'OUTPUT': outdir + '/'}, context, feedback),
['gdal2tiles.py',
'-p mercator -w all -r average -s EPSG:3111 ' +
source + ' ' +
outdir + '/'])
# with target using proj string
custom_crs = 'proj4: +proj=utm +zone=36 +south +a=6378249.145 +b=6356514.966398753 +towgs84=-143,-90,-294,0,0,0,0 +units=m +no_defs'
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'SOURCE_CRS': custom_crs,
'OUTPUT': outdir + '/'}, context, feedback),
['gdal2tiles.py',
'-p mercator -w all -r average -s EPSG:20936 ' +
source + ' ' +
outdir + '/'])
# with target using custom projection
custom_crs = 'proj4: +proj=utm +zone=36 +south +a=63785 +b=6357 +towgs84=-143,-90,-294,0,0,0,0 +units=m +no_defs'
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'SOURCE_CRS': custom_crs,
'OUTPUT': outdir + '/'}, context, feedback),
['gdal2tiles.py',
'-p mercator -w all -r average -s "+proj=utm +zone=36 +south +a=63785 +b=6357 +towgs84=-143,-90,-294,0,0,0,0 +units=m +no_defs" ' +
source + ' ' +
outdir + '/'])
# with non-EPSG crs code
self.assertEqual(
alg.getConsoleCommands({'INPUT': source,
'SOURCE_CRS': 'POSTGIS:3111',
'OUTPUT': outdir + '/'}, context, feedback),
['gdal2tiles.py',
'-p mercator -w all -r average -s EPSG:3111 ' +
source + ' ' +
outdir + '/'])
def testGdalCalc(self):
context = QgsProcessingContext()
feedback = QgsProcessingFeedback()
source = os.path.join(testDataPath, 'dem.tif')
alg = gdalcalc()
alg.initAlgorithm()
with tempfile.TemporaryDirectory() as outdir:
output = outdir + '/check.jpg'
# default execution
formula = 'A*2' # default formula
self.assertEqual(
alg.getConsoleCommands({
'INPUT_A': source,
'BAND_A': 1,
'FORMULA': formula,
'BAND_D': -1,
'NO_DATA': None,
'BAND_F': -1,
'BAND_B': -1,
'RTYPE': 5,
'INPUT_F': None,
'BAND_E': -1,
'INPUT_D': None,
'INPUT_B': None,
'BAND_C': -1,
'INPUT_E': None,
'INPUT_C': None,
'OUTPUT': output}, context, feedback),
['gdal_calc' if isWindows() else 'gdal_calc.py', '--calc "{}" --format JPEG --type Float32 -A {} --A_band 1 --outfile {}'.format(formula, source, output)])
# check that formula is not escaped and formula is returned as it is
formula = 'A * 2' # <--- add spaces in the formula
self.assertEqual(
alg.getConsoleCommands({
'INPUT_A': source,
'BAND_A': 1,
'FORMULA': formula,
'BAND_D': -1,
'NO_DATA': None,
'BAND_F': -1,
'BAND_B': -1,
'RTYPE': 5,
'INPUT_F': None,
'BAND_E': -1,
'INPUT_D': None,
'INPUT_B': None,
'BAND_C': -1,
'INPUT_E': None,
'INPUT_C': None,
'OUTPUT': output}, context, feedback),
['gdal_calc' if isWindows() else 'gdal_calc.py', '--calc "{}" --format JPEG --type Float32 -A {} --A_band 1 --outfile {}'.format(formula, source, output)])
def testBuildVrt(self):
context = QgsProcessingContext()
feedback = QgsProcessingFeedback()
source = os.path.join(testDataPath, 'dem.tif')
alg = buildvrt()
alg.initAlgorithm()
with tempfile.TemporaryDirectory() as outdir:
commands = alg.getConsoleCommands({'LAYERS': [source],
'OUTPUT': outdir + '/test.vrt'}, context, feedback)
self.assertEqual(len(commands), 2)
self.assertEqual(commands[0], 'gdalbuildvrt')
self.assertIn('-resolution average', commands[1])
self.assertIn('-separate', commands[1])
self.assertNotIn('-allow_projection_difference', commands[1])
self.assertNotIn('-add_alpha', commands[1])
self.assertNotIn('-a_srs', commands[1])
self.assertIn('-r nearest', commands[1])
self.assertIn('-input_file_list', commands[1])