---
title: extrapolate
framework: coreimage
role: symbol
role_heading: Instance Property
path: coreimage/citonecurve/extrapolate
---

# extrapolate

If true, then the color effect will be extrapolated if the input image contains RGB component values outside the range 0.0 to 1.0.

## Declaration

```swift
var extrapolate: Bool { get set }
```