This is documentation of an archived release.
For documentation on the current version, please check Knowledge Base.

Orbit Annotation File

OAF stands for Orbit Annotation File and is a file format (filename extension .oaf) developed by Orbit Geospatial Technologies for saving annotations in a file. Annotations (or Redlining) are tools to complement the map data with temporary notes or sketches.


An Annotation consists out of some Annotation Objects. An Annotation Object is a rectangle, a line, a text (See annotation types).

Reasons to use

  • An Annotation can be temporary, can be stored in a file, or can be stored as attribute to a spatial object (See Dataset Structure - Naming).
  • Since Orbit annotations are georeferenced, they remember exact positions and can be exchanged with other Orbit users.

Create and Update

  • create a new annotation file from : Map 2D > Tools > Anno > File Access > New. Don't forget to save your anotation objects as an AOF file
  • update an anotation file from : Map 2D > Tools > Anno > File Access > Open. Don't forget to save your updates.
Last modified:: 2019/03/25 11:36