NZ Topo - object class blowhole_pnt
This page describe the blowhole_pnt object class used to represent objects in the NZTopo topographic database.
Description
A hole in a coastal rock formation through which sea water is forced violently up by tide or a wave.
Topo50 description
Blowholes have become a legacy feature. This means that they will remain in the data until a sheet undergoes revision. During this process the features will be re-classified as a geographic_name_pnt
Class attributes
| Attribute | Value |
|---|---|
| Object class | blowhole_pnt |
| Entity class | BLOWHOLE |
| Additional entity class | Not applicable |
| Object inheritance | graphic_point |
| Entity source | Proposed NZ Entity |
| Map series | Topo50 |
| LSLIFF object class | 198 |
Object attributes
This object class does not have attributes.
Change log
| Feature version | Revised | Description |
|---|---|---|
| 4 | 2012-08-28 | Updated map image and aerial view; added representation specification and example feature photographs |
| 3 | 2012-08-27 | Now defined as a legacy feature |
| 2 | 2001-11-23 | Unspecified update |
| 1 | 1999-03-01 | intial status |