# Heightmap

> Indicates a change to the heightmap data.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine](/engine/6000.0/script-reference/unityengine.md)
* **Assembly:** UnityEngine.TerrainModule

```csharp
Heightmap = 1
```

### Remarks

This flag is set when heightmap data has been changed, for instance after [TerrainData.SetHeights](/engine/6000.0/script-reference/unityengine/terraindata/setheights.md) calls. Note that [TerrainData.SetHeightsDelayLOD](/engine/6000.0/script-reference/unityengine/terraindata/setheightsdelaylod.md) doesn't set this flag, even though the heightmap data is updated. See [TerrainChangedFlags.DelayedHeightmapUpdate](/engine/6000.0/script-reference/unityengine/terrainchangedflags/delayedheightmapupdate.md).