---
title: ARGeoAnchor.AltitudeSource.coarse
framework: arkit
role: symbol
role_heading: Case
path: arkit/argeoanchor/altitudesource-swift.enum/coarse
---

# ARGeoAnchor.AltitudeSource.coarse

The framework sets the altitude using a coarse digital-elevation model.

## Declaration

```swift
case coarse
```

## Discussion

Discussion The accuracy of this altitude is noticeably imprecise at close range, but it’s sufficient from far away. Use this option to save computational resources for anchors that are far off in the distance.

## See Also

### Sources

- [ARGeoAnchor.AltitudeSource.precise](arkit/argeoanchor/altitudesource-swift.enum/precise.md)
- [ARGeoAnchor.AltitudeSource.userDefined](arkit/argeoanchor/altitudesource-swift.enum/userdefined.md)
- [ARGeoAnchor.AltitudeSource.unknown](arkit/argeoanchor/altitudesource-swift.enum/unknown.md)