Use default raster iterator tile size

src/analysis/processing/qgsalgorithmrasterlayeruniquevalues.cpp

@@ -123,15 +123,13 @@ QVariantMap QgsRasterLayerUniqueValuesReportAlgorithm::processAlgorithm( const Q
   qgssize noDataCount = 0;
 
   qgssize layerSize = static_cast< qgssize >( mLayerWidth ) * static_cast< qgssize >( mLayerHeight );
-  int maxWidth = 4000;
-  int maxHeight = 4000;
+  int maxWidth = QgsRasterIterator::DEFAULT_MAXIMUM_TILE_WIDTH;
+  int maxHeight = QgsRasterIterator::DEFAULT_MAXIMUM_TILE_HEIGHT;
   int nbBlocksWidth = std::ceil( 1.0 * mLayerWidth / maxWidth );
   int nbBlocksHeight = std::ceil( 1.0 * mLayerHeight / maxHeight );
   int nbBlocks = nbBlocksWidth * nbBlocksHeight;
 
   QgsRasterIterator iter( mInterface.get() );
-  iter.setMaximumTileWidth( maxWidth );
-  iter.setMaximumTileHeight( maxHeight );
   iter.startRasterRead( mBand, mLayerWidth, mLayerHeight, mExtent );
 
   int iterLeft = 0;

src/analysis/processing/qgsrasteranalysisutils.cpp

@@ -65,12 +65,7 @@ void QgsRasterAnalysisUtils::statisticsFromMiddlePointTest( QgsRasterInterface *
   }
   polyEngine->prepareGeometry();
 
-  const int maxWidth = 4000;
-  const int maxHeight = 4000;
-
   QgsRasterIterator iter( rasterInterface );
-  iter.setMaximumTileWidth( maxWidth );
-  iter.setMaximumTileHeight( maxHeight );
   iter.startRasterRead( rasterBand, nCellsX, nCellsY, rasterBBox );
 
   std::unique_ptr< QgsRasterBlock > block;
@@ -118,12 +113,7 @@ void QgsRasterAnalysisUtils::statisticsFromPreciseIntersection( QgsRasterInterfa
   }
   polyEngine->prepareGeometry();
 
-  const int maxWidth = 4000;
-  const int maxHeight = 4000;
-
   QgsRasterIterator iter( rasterInterface );
-  iter.setMaximumTileWidth( maxWidth );
-  iter.setMaximumTileHeight( maxHeight );
   iter.startRasterRead( rasterBand, nCellsX, nCellsY, rasterBBox );
 
   std::unique_ptr< QgsRasterBlock > block;

src/analysis/processing/qgsreclassifyutils.cpp

@@ -31,12 +31,10 @@ void QgsReclassifyUtils::reclassify( const QVector<QgsReclassifyUtils::RasterCla
                                      QgsRasterDataProvider *destinationRaster, double destNoDataValue, bool useNoDataForMissingValues,
                                      QgsProcessingFeedback *feedback )
 {
-  int maxWidth = 4000;
-  int maxHeight = 4000;
+  int maxWidth = QgsRasterIterator::DEFAULT_MAXIMUM_TILE_WIDTH;
+  int maxHeight = QgsRasterIterator::DEFAULT_MAXIMUM_TILE_HEIGHT;
 
   QgsRasterIterator iter( sourceRaster );
-  iter.setMaximumTileWidth( maxWidth );
-  iter.setMaximumTileHeight( maxHeight );
   iter.startRasterRead( band, sourceWidthPixels, sourceHeightPixels, extent );
 
   int nbBlocksWidth = static_cast< int >( std::ceil( 1.0 * sourceWidthPixels / maxWidth ) );