---
title: referenceRasterWidth
framework: corevideo
role: symbol
role_heading: Instance Property
path: corevideo/cvimagedisplaymaskrectangle/referencerasterwidth
---

# referenceRasterWidth

The width in pixels of the 2D coordinate system to define the rectangle.

## Declaration

```swift
var referenceRasterWidth: UInt16
```

## Discussion

Discussion Usually matches the width of the video or the output device.