def testImportIntoGpkg(self):
# init target file
test_gpkg = tempfile.mktemp(suffix='.gpkg', dir=self.testDataDir)
gdal.GetDriverByName('GPKG').Create(test_gpkg, 1, 1, 1)
source = QgsRasterLayer(os.path.join(self.testDataDir, 'raster', 'band3_byte_noct_epsg4326.tif'), 'my', 'gdal')
self.assertTrue(source.isValid())
provider = source.dataProvider()
fw = QgsRasterFileWriter(test_gpkg)
fw.setOutputFormat('gpkg')
fw.setCreateOptions(['RASTER_TABLE=imported_table', 'APPEND_SUBDATASET=YES'])
pipe = QgsRasterPipe()
self.assertTrue(pipe.set(provider.clone()))
projector = QgsRasterProjector()
projector.setCrs(provider.crs(), provider.crs())
self.assertTrue(pipe.insert(2, projector))
self.assertEqual(fw.writeRaster(pipe,
provider.xSize(),
provider.ySize(),
provider.extent(),
provider.crs()), 0)
# Check that the test geopackage contains the raster layer and compare
rlayer = QgsRasterLayer('GPKG:%s:imported_table' % test_gpkg)
self.assertTrue(rlayer.isValid())
out_provider = rlayer.dataProvider()
self.assertEqual(provider.block(1, provider.extent(), source.width(), source.height()).data(),
out_provider.block(1, out_provider.extent(), rlayer.width(), rlayer.height()).data())
# remove result file
os.unlink(test_gpkg)
def exportRasterLayer(self, layer, destinationFile, options=None):
outputFormat = self.settings['rasterFormat'] if 'rasterFormat' in self.settings else 'GTiff'
if os.path.splitext(destinationFile)[1] == '':
formats = QgsRasterFileWriter.extensionsForFormat(outputFormat)
if len(formats) > 0:
destinationFile = '{}.{}'.format(destinationFile, formats[0])
provider = layer.dataProvider()
cols = provider.xSize()
rows = provider.ySize()
if not provider.capabilities() & QgsRasterDataProvider.Size:
k = float(provider.extent().width()) / float(provider.extent().height())
cols = RASTER_SIZE * k
rows = RASTER_SIZE
pipe = QgsRasterPipe()
if not pipe.set(provider.clone()):
QgsMessageLog.logMessage(self.tr('Failed to export layer "{layer}": Cannot set pipe provider.'.format(layer=layer.name())), 'QConsolidate', Qgis.Warning)
return False, None
nodata = {}
for i in range(1, provider.bandCount() + 1):
if provider.sourceHasNoDataValue(i):
value = provider.sourceNoDataValue(i)
nodata[i] = QgsRasterRange(value, value)
nuller = QgsRasterNuller()
for band, value in nodata.items():
nuller.setNoData(band, [value])
if not pipe.insert(1, nuller):
QgsMessageLog.logMessage(self.tr('Failed to export layer "{layer}": Cannot set pipe nuller.'.format(layer=layer.name())), 'QConsolidate', Qgis.Warning)
return False, None
writer = QgsRasterFileWriter(destinationFile)
writer.setOutputFormat(outputFormat)
if options is not None:
writer.setCreateOptions(options)
success = True
error = writer.writeRaster(pipe, cols, rows, provider.extent(), provider.crs())
if error != QgsRasterFileWriter.NoError:
QgsMessageLog.logMessage(self.tr('Failed to export layer "{layer}": {message}.'.format(layer=layer.name(), message=error)), 'QConsolidate', Qgis.Warning)
success = False
return success, destinationFile
def write(self, theRasterName):
print theRasterName
path = "%s/%s" % (self.testDataDir, theRasterName)
# myFileInfo = QFileInfo( path )
# myBaseName = myFileInfo.baseName()
rasterLayer = QgsRasterLayer(path, "test")
if not rasterLayer.isValid():
return False
provider = rasterLayer.dataProvider()
tmpFile = QTemporaryFile()
tmpFile.open() # fileName is no avialable until open
tmpName = tmpFile.fileName()
tmpFile.close()
# do not remove when class is destroyd so that we can read the file and see difference
tmpFile.setAutoRemove(False)
fileWriter = QgsRasterFileWriter(tmpName)
pipe = QgsRasterPipe()
if not pipe.set(provider.clone()):
print "Cannot set pipe provider"
return False
# nuller = QgsRasterNuller()
# nuller.setNoData( ... )
# if not pipe.insert( 1, nuller ):
# print "Cannot set pipe nuller"
# return False
projector = QgsRasterProjector()
projector.setCRS(provider.crs(), provider.crs())
if not pipe.insert(2, projector):
print "Cannot set pipe projector"
return False
fileWriter.writeRaster(pipe, provider.xSize(), provider.ySize(), provider.extent(), provider.crs())
checker = QgsRasterChecker()
ok = checker.runTest("gdal", tmpName, "gdal", path)
self.report += checker.report()
# All OK, we can delete the file
tmpFile.setAutoRemove(ok)
return ok
def write(self, theRasterName):
print(theRasterName)
path = "%s/%s" % (self.testDataDir, theRasterName)
rasterLayer = QgsRasterLayer(path, "test")
if not rasterLayer.isValid():
return False
provider = rasterLayer.dataProvider()
tmpFile = QTemporaryFile()
tmpFile.open() # fileName is no avialable until open
tmpName = tmpFile.fileName()
tmpFile.close()
# do not remove when class is destroyed so that we can read
# the file and see difference
tmpFile.setAutoRemove(False)
fileWriter = QgsRasterFileWriter(tmpName)
pipe = QgsRasterPipe()
if not pipe.set(provider.clone()):
print("Cannot set pipe provider")
return False
projector = QgsRasterProjector()
projector.setCrs(provider.crs(), provider.crs())
if not pipe.insert(2, projector):
print("Cannot set pipe projector")
return False
fileWriter.writeRaster(
pipe,
provider.xSize(),
provider.ySize(),
provider.extent(),
provider.crs())
checker = QgsRasterChecker()
ok = checker.runTest("gdal", tmpName, "gdal", path)
self.report += checker.report()
# All OK, we can delete the file
tmpFile.setAutoRemove(ok)
return ok
def _exportRaster(self, filePath, rawMode=True):
provider = self.data.dataProvider()
cols = provider.xSize()
rows = provider.ySize()
pipe = None
if rawMode:
pipe = QgsRasterPipe()
if not pipe.set(provider.clone()):
self.error = self.tr(
'Failed to export layer "{layer}": Cannot set pipe provider.'
.format(layer=self.data.name()))
return False
nodata = {}
for i in range(1, provider.bandCount() + 1):
if provider.sourceHasNoDataValue(i):
value = provider.sourceNoDataValue(i)
nodata[i] = QgsRasterRange(value, value)
nuller = QgsRasterNuller()
for band, value in nodata.items():
nuller.setNoData(band, [value])
if not pipe.insert(1, nuller):
self.error = self.tr(
'Failed to export layer "{layer}": Cannot set pipe nuller.'
.format(layer=self.data.name()))
return False
else:
pipe = self.data.pipe()
writer = QgsRasterFileWriter(filePath)
writer.setOutputFormat('GTiff')
error = writer.writeRaster(pipe, cols, rows, provider.extent(),
provider.crs())
if error != QgsRasterFileWriter.NoError:
self.error = self.tr(
'Failed to export layer "{layer}": {message}.'.format(
layer=self.data.name(), message=error))
return False
return True
def testImportIntoGpkg(self):
# init target file
test_gpkg = tempfile.mktemp(suffix='.gpkg', dir=self.testDataDir)
gdal.GetDriverByName('GPKG').Create(test_gpkg, 1, 1, 1)
source = QgsRasterLayer(
os.path.join(self.testDataDir, 'raster',
'band3_byte_noct_epsg4326.tif'), 'my', 'gdal')
self.assertTrue(source.isValid())
provider = source.dataProvider()
fw = QgsRasterFileWriter(test_gpkg)
fw.setOutputFormat('gpkg')
fw.setCreateOptions(
['RASTER_TABLE=imported_table', 'APPEND_SUBDATASET=YES'])
pipe = QgsRasterPipe()
self.assertTrue(pipe.set(provider.clone()))
projector = QgsRasterProjector()
projector.setCrs(provider.crs(), provider.crs())
self.assertTrue(pipe.insert(2, projector))
self.assertEqual(
fw.writeRaster(pipe, provider.xSize(), provider.ySize(),
provider.extent(), provider.crs()), 0)
# Check that the test geopackage contains the raster layer and compare
rlayer = QgsRasterLayer('GPKG:%s:imported_table' % test_gpkg)
self.assertTrue(rlayer.isValid())
out_provider = rlayer.dataProvider()
self.assertEqual(
provider.block(1, provider.extent(), source.width(),
source.height()).data(),
out_provider.block(1, out_provider.extent(), rlayer.width(),
rlayer.height()).data())
# remove result file
os.unlink(test_gpkg)
def _testGeneratePyramids(self, pyramidFormat):
tmpName = tempfile.mktemp(suffix='.tif')
source = QgsRasterLayer(os.path.join(self.testDataDir, 'raster', 'byte.tif'), 'my', 'gdal')
self.assertTrue(source.isValid())
provider = source.dataProvider()
fw = QgsRasterFileWriter(tmpName)
fw.setBuildPyramidsFlag(QgsRaster.PyramidsFlagYes)
fw.setPyramidsFormat(pyramidFormat)
fw.setPyramidsList([2])
pipe = QgsRasterPipe()
self.assertTrue(pipe.set(provider.clone()))
projector = QgsRasterProjector()
projector.setCrs(provider.crs(), provider.crs())
self.assertTrue(pipe.insert(2, projector))
self.assertEqual(fw.writeRaster(pipe,
provider.xSize(),
provider.ySize(),
provider.extent(),
provider.crs()), 0)
del fw
ds = gdal.Open(tmpName)
self.assertEqual(ds.GetRasterBand(1).GetOverviewCount(), 1)
fl = ds.GetFileList()
if pyramidFormat == QgsRaster.PyramidsGTiff:
self.assertEqual(len(fl), 2, fl)
self.assertIn('.ovr', fl[1])
elif pyramidFormat == QgsRaster.PyramidsInternal:
self.assertEqual(len(fl), 1, fl)
elif pyramidFormat == QgsRaster.PyramidsErdas:
self.assertEqual(len(fl), 2, fl)
self.assertIn('.aux', fl[1])
os.unlink(tmpName)
def _testGeneratePyramids(self, pyramidFormat):
tmpName = tempfile.mktemp(suffix='.tif')
source = QgsRasterLayer(os.path.join(self.testDataDir, 'raster', 'byte.tif'), 'my', 'gdal')
self.assertTrue(source.isValid())
provider = source.dataProvider()
fw = QgsRasterFileWriter(tmpName)
fw.setBuildPyramidsFlag(QgsRaster.PyramidsFlagYes)
fw.setPyramidsFormat(pyramidFormat)
fw.setPyramidsList([2])
pipe = QgsRasterPipe()
self.assertTrue(pipe.set(provider.clone()))
projector = QgsRasterProjector()
projector.setCrs(provider.crs(), provider.crs())
self.assertTrue(pipe.insert(2, projector))
self.assertEqual(fw.writeRaster(pipe,
provider.xSize(),
provider.ySize(),
provider.extent(),
provider.crs()), 0)
del fw
ds = gdal.Open(tmpName)
self.assertEqual(ds.GetRasterBand(1).GetOverviewCount(), 1)
fl = ds.GetFileList()
if pyramidFormat == QgsRaster.PyramidsGTiff:
self.assertEqual(len(fl), 2, fl)
self.assertIn('.ovr', fl[1])
elif pyramidFormat == QgsRaster.PyramidsInternal:
self.assertEqual(len(fl), 1, fl)
elif pyramidFormat == QgsRaster.PyramidsErdas:
self.assertEqual(len(fl), 2, fl)
self.assertIn('.aux', fl[1])
os.unlink(tmpName)
def write_raster(raster_layer, raster_writer, write_path):
"""Write raster to specified file and update the layer's data source."""
dp = raster_layer.dataProvider()
pipe = QgsRasterPipe()
if not pipe.set(dp.clone()):
raise PackagingError(
f"Couldn't set raster pipe projector for layer {write_path}")
projector = QgsRasterProjector()
projector.setCrs(raster_layer.crs(), raster_layer.crs())
if not pipe.insert(2, projector):
raise PackagingError(
f"Couldn't set raster pipe provider for layer {write_path}")
res = raster_writer.writeRaster(pipe, dp.xSize(), dp.ySize(), dp.extent(),
raster_layer.crs())
if not res == QgsRasterFileWriter.NoError:
raise PackagingError(
f"Couldn't save raster {write_path} - write error: {res}")
provider_opts = QgsDataProvider.ProviderOptions()
provider_opts.layerName = raster_layer.name()
raster_layer.setDataSource(write_path, raster_layer.name(), "gdal",
provider_opts)
def exportRasterLayer(self, layer, destinationFile, options=None):
outputFormat = self.settings[
'rasterFormat'] if 'rasterFormat' in self.settings else 'GTiff'
if os.path.splitext(destinationFile)[1] == '':
formats = QgsRasterFileWriter.extensionsForFormat(outputFormat)
if len(formats) > 0:
destinationFile = '{}.{}'.format(destinationFile, formats[0])
provider = layer.dataProvider()
cols = provider.xSize()
rows = provider.ySize()
if not provider.capabilities() & QgsRasterDataProvider.Size:
k = float(provider.extent().width()) / float(
provider.extent().height())
cols = RASTER_SIZE * k
rows = RASTER_SIZE
pipe = QgsRasterPipe()
if not pipe.set(provider.clone()):
QgsMessageLog.logMessage(
self.
tr('Failed to export layer "{layer}": Cannot set pipe provider.'
).format(layer=layer.name()), 'QConsolidate', Qgis.Warning)
return False, None
nodata = {}
for i in range(1, provider.bandCount() + 1):
if provider.sourceHasNoDataValue(i):
value = provider.sourceNoDataValue(i)
nodata[i] = QgsRasterRange(value, value)
nuller = QgsRasterNuller()
for band, value in nodata.items():
nuller.setNoData(band, [value])
if not pipe.insert(1, nuller):
QgsMessageLog.logMessage(
self.tr(
'Failed to export layer "{layer}": Cannot set pipe nuller.'
).format(layer=layer.name()), 'QConsolidate', Qgis.Warning)
return False, None
writer = QgsRasterFileWriter(destinationFile)
writer.setOutputFormat(outputFormat)
if options is not None:
writer.setCreateOptions(options)
success = True
error = writer.writeRaster(pipe, cols, rows, provider.extent(),
provider.crs())
if error != QgsRasterFileWriter.NoError:
QgsMessageLog.logMessage(
self.tr('Failed to export layer "{layer}": {message}.').format(
layer=layer.name(), message=error), 'QConsolidate',
Qgis.Warning)
success = False
return success, destinationFile
