bool QgsReclassifyAlgorithmBase::prepareAlgorithm( const QVariantMap ¶meters, QgsProcessingContext &context, QgsProcessingFeedback *feedback )
{
mDataType = QgsRasterAnalysisUtils::rasterTypeChoiceToDataType( parameterAsEnum( parameters, QStringLiteral( "DATA_TYPE" ), context ) );
QgsRasterLayer *layer = parameterAsRasterLayer( parameters, QStringLiteral( "INPUT_RASTER" ), context );
if ( !layer )
throw QgsProcessingException( invalidRasterError( parameters, QStringLiteral( "INPUT_RASTER" ) ) );
mBand = parameterAsInt( parameters, QStringLiteral( "RASTER_BAND" ), context );
if ( mBand < 1 || mBand > layer->bandCount() )
throw QgsProcessingException( QObject::tr( "Invalid band number for RASTER_BAND (%1): Valid values for input raster are 1 to %2" ).arg( mBand )
.arg( layer->bandCount() ) );
mInterface.reset( layer->dataProvider()->clone() );
mExtent = layer->extent();
mCrs = layer->crs();
mRasterUnitsPerPixelX = std::abs( layer->rasterUnitsPerPixelX() );
mRasterUnitsPerPixelY = std::abs( layer->rasterUnitsPerPixelY() );
mNbCellsXProvider = mInterface->xSize();
mNbCellsYProvider = mInterface->ySize();
mNoDataValue = parameterAsDouble( parameters, QStringLiteral( "NO_DATA" ), context );
mUseNoDataForMissingValues = parameterAsBool( parameters, QStringLiteral( "NODATA_FOR_MISSING" ), context );
int boundsType = parameterAsEnum( parameters, QStringLiteral( "RANGE_BOUNDARIES" ), context );
switch ( boundsType )
{
case 0:
mBoundsType = QgsReclassifyUtils::RasterClass::IncludeMax;
break;
case 1:
mBoundsType = QgsReclassifyUtils::RasterClass::IncludeMin;
break;
case 2:
mBoundsType = QgsReclassifyUtils::RasterClass::IncludeMinAndMax;
break;
case 3:
mBoundsType = QgsReclassifyUtils::RasterClass::Exclusive;
break;
}
return _prepareAlgorithm( parameters, context, feedback );
}
QVariantMap QgsSelectByLocationAlgorithm::processAlgorithm( const QVariantMap ¶meters, QgsProcessingContext &context, QgsProcessingFeedback *feedback )
{
QgsVectorLayer *selectLayer = parameterAsVectorLayer( parameters, QStringLiteral( "INPUT" ), context );
QgsVectorLayer::SelectBehavior method = static_cast< QgsVectorLayer::SelectBehavior >( parameterAsEnum( parameters, QStringLiteral( "METHOD" ), context ) );
std::unique_ptr< QgsFeatureSource > intersectSource( parameterAsSource( parameters, QStringLiteral( "INTERSECT" ), context ) );
const QList< int > selectedPredicates = parameterAsEnums( parameters, QStringLiteral( "PREDICATE" ), context );
QgsFeatureIds selectedIds;
auto addToSelection = [&]( const QgsFeature & feature )
{
selectedIds.insert( feature.id() );
};
process( selectLayer, intersectSource.get(), selectedPredicates, addToSelection, true, feedback );
selectLayer->selectByIds( selectedIds, method );
QVariantMap results;
results.insert( QStringLiteral( "OUTPUT" ), parameters.value( QStringLiteral( "INPUT" ) ) );
return results;
}
