---
title: hasPrecisionRecallCurve
framework: vision
role: symbol
role_heading: Instance Property
path: vision/classificationobservation/hasprecisionrecallcurve
---

# hasPrecisionRecallCurve

A Boolean value that indicates whether the observation contains precision and recall curves.

## Declaration

```swift
var hasPrecisionRecallCurve: Bool { get }
```

## Discussion

Discussion If this property is true, then you can call precision and recall-related methods in this observation. If this property is false, then the precision and recall-related methods don’t return meaningful data.

## See Also

### Inspecting an observation

- [RequestDescriptor](vision/requestdescriptor.md)
- [identifier](vision/classificationobservation/identifier.md)