This node smooths a terrain by replacing the height of a vertex by the average of the height of its neighbors. This average value and the initial value are blended.
To add a Smooth node, right click in the Graph Editor and select Create Node > Terrain Transformation > Smooth.
Double click on the node to open its parameters:
To edit a Smooth node use the sliders:
|Neighborhood||The size of the neighborhood to be taken into account|
|Strength||The blend coefficient between the original value and the average of the neighbors|
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