# ExtrapolationType

engine/Source/Core/ExtrapolationType.js 9
Constants to determine how an interpolated value is extrapolated when querying outside the bounds of available data.

##### Properties:

Name | Type | Description
--- | --- | ---
`NONE` | number | No extrapolation occurs.
`HOLD` | number | The first or last value is used when outside the range of sample data.
`EXTRAPOLATE` | number | The value is extrapolated.

##### See:

- SampledProperty

### Members

#### static constant Cesium.ExtrapolationType.EXTRAPOLATE : number
engine/Source/Core/ExtrapolationType.js 32

The value is extrapolated.

Default Value: `2`

#### static constant Cesium.ExtrapolationType.HOLD : number
engine/Source/Core/ExtrapolationType.js 24

The first or last value is used when outside the range of sample data.

Default Value: `1`

#### static constant Cesium.ExtrapolationType.NONE : number
engine/Source/Core/ExtrapolationType.js 16

No extrapolation occurs.

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