---
title: topLeft
framework: vision
role: symbol
role_heading: Instance Property
path: vision/vnrectangleobservation/topleft
---

# topLeft

The coordinates of the upper-left corner of the observation bounding box.

## Declaration

```swift
var topLeft: CGPoint { get }
```

## See Also

### Accessing the Coordinates

- [bottomLeft](vision/vnrectangleobservation/bottomleft.md)
- [bottomRight](vision/vnrectangleobservation/bottomright.md)
- [topRight](vision/vnrectangleobservation/topright.md)