How would you like to process the input DEM:
Choose the processing tool you want to use.

Smoothing is designed to reduce abrupt elevation changes in a DEM. It is meant to be used after the primary tools in a map without gaps.

Raster to be modified:
You need to choose a raster (DEM) where you want to perform the smoothing.

Check the option Smooth inside polygon(s) only to smooth only parts of the raster layer that are marked by the mask polygons.

Mask layer:
Select a layer that contains mask polygons for smoothing.

Smoothing type:
Select which filter will be used for the smoothing. Please refer to the manual for details about the different filters.

Smoothing factor:
Enter the smoothing factor this text field or, if it is in the attribute table (e.g.: it’s different for each mask), please select the corresponding attribute field by pressing the override button on the right.
This factor represents the radius around a given pixel that will be taken into consideration. The greater the number, the smoother will the resulting raster be.

The smoothing factor specified in the text field will be used as default for the polygons that do not have an individual smoothing factor in the attribute table.
More information in the User's Manual

Advanced parameters:
Set Paleoshorelines fixed can be checked to keep paleoshorelines fixed during smoothing.
Rotated paleoshorelines:
You need to select a vector layer containing paleoshoreline polygons.

Output file path:
If there is no path specified here, the file will be created in the temporary folder. The full path will be shown in the Log tab and the result will be loaded to the map canvas.

Warning: Please avoid using these characters in the file name, as they might cause processing errors: ( ) / - % $ @ #
Note: If this tool is used repetitively with no path specified, previous results will be overwritten. To avoid this, specify a different path (or filename) each time.