---
title: ar_plane_classification_status_unknown
framework: arkit
role: symbol
role_heading: Enumeration Case
path: arkit/ar_plane_classification_t/ar_plane_classification_status_unknown
---

# ar_plane_classification_status_unknown

A plane classification isn’t one of the known classes.

## Declaration

```occ
ar_plane_classification_status_unknown
```

## See Also

### Plane detection

- [ar_plane_alignment_t](arkit/ar_plane_alignment_t.md)
- [ar_plane_classification_t](arkit/ar_plane_classification_t.md)
- [ar_plane_classification_ceiling](arkit/ar_plane_classification_t/ar_plane_classification_ceiling.md)
- [ar_plane_classification_door](arkit/ar_plane_classification_t/ar_plane_classification_door.md)
- [ar_plane_classification_floor](arkit/ar_plane_classification_t/ar_plane_classification_floor.md)
- [ar_plane_classification_seat](arkit/ar_plane_classification_t/ar_plane_classification_seat.md)
- [ar_plane_classification_status_not_available](arkit/ar_plane_classification_t/ar_plane_classification_status_not_available.md)
- [ar_plane_classification_status_undetermined](arkit/ar_plane_classification_t/ar_plane_classification_status_undetermined.md)
- [ar_plane_classification_table](arkit/ar_plane_classification_t/ar_plane_classification_table.md)
- [ar_plane_classification_wall](arkit/ar_plane_classification_t/ar_plane_classification_wall.md)
- [ar_plane_classification_window](arkit/ar_plane_classification_t/ar_plane_classification_window.md)
- [ar_plane_anchor_get_alignment](arkit/ar_plane_anchor_get_alignment.md)
- [ar_plane_anchor_get_geometry](arkit/ar_plane_anchor_get_geometry.md)
- [ar_plane_anchor_get_plane_classification](arkit/ar_plane_anchor_get_plane_classification.md)
- [ar_plane_anchors_enumerate_anchors](arkit/ar_plane_anchors_enumerate_anchors.md)