Changes SAGA io_gdal RESAMPLING method to B-Spline Interpolation, as …

…SAGA default, and add the Resampling Method parameter to SAGA Raster Calculator, as explained in https://issues.qgis.org/issues/16646
qgis · Jun 16, 2017 · b49f53b · b49f53b
1 parent cb1f98f
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diff --git a/python/plugins/processing/algs/saga/SagaAlgorithm.py b/python/plugins/processing/algs/saga/SagaAlgorithm.py
@@ -345,7 +345,7 @@ def exportRasterLayer(self, source):
         destFilename = getTempFilenameInTempFolder(filename + '.sgrd')
         self.exportedLayers[source] = destFilename
         sessionExportedLayers[source] = destFilename
-        return 'io_gdal 0 -TRANSFORM 1 -RESAMPLING 0 -GRIDS "' + destFilename + '" -FILES "' + source + '"'
+        return 'io_gdal 0 -TRANSFORM 1 -RESAMPLING 3 -GRIDS "' + destFilename + '" -FILES "' + source + '"'
 
     def checkParameterValues(self, parameters, context):
         """

diff --git a/python/plugins/processing/algs/saga/description/GridCalculator.txt b/python/plugins/processing/algs/saga/description/GridCalculator.txt
@@ -4,6 +4,7 @@ AllowUnmatching
 ParameterRaster|GRIDS|Main input layer|False
 ParameterMultipleInput|XGRIDS|Additional layers|3|True
 ParameterString|FORMULA|Formula|
+ParameterSelection|RESAMPLING|Resampling Method|[0] Nearest Neighbour;[1] Bilinear Interpolation;[2] Bicubic Spline Interpolation;[3] B-Spline Interpolation|3
 ParameterBoolean|USE_NODATA|Use NoData|False
 ParameterSelection|TYPE|Output Data Type|[0] bit;[1] unsigned 1 byte integer;[2] signed 1 byte integer;[3] unsigned 2 byte integer;[4] signed 2 byte integer;[5] unsigned 4 byte integer;[6] signed 4 byte integer;[7] 4 byte floating point number;[8] 8 byte floating point number|7
 OutputRaster|RESULT|Calculated