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**: Sets the size of the neighborhood to be taken into account in meters.- For a size of 1, the 8 neighbors are taken into account.
- For a size of 2, the 8 immediate neighbors as well as the 16
second-rank neighbors are taken into account.

The selected size is half the length of the square of the neighbors around the vertex.

**Strength**: Sets the strength of the smoothing between 0 and 1.- A value of 0 produces no effect.
- A value of 1 produces maximum smoothing.

Parameter | Use |
---|---|

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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