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Take a Control Point on a Map

Learn how to add control points using a known cartographic position as reference.

Work in progress


The entry point: when creating a control point, click Set position button to enter cartographic coordinates:

Control point

Extract from reference documentation:

Set Reference from a Map​

Click Set position button to define the reference position.

Set control point position

Enter the reference properties:

  • Name (optional)
  • Cartographic position with latitude, longitude, and altitude.
  • Precision (optional): estimated reference precision. Default is 10 m (suited for 1:25000 map).

The following actions are available from menu:

  • Export GPX point: export current position to a GPX file
  • Copy point: copy current position to clipboard
  • Import GPX point: import position from a GPX file
  • Paste point: copy position from clipboard
  • Current position (GPS): set position from GPS
warning

When importing a 2D position from GPX or from clipboard, do not forget to specify the missing altitude.

Supported clipboard formats:

  • 2 fields lat,lon: 44.699631, 7.129146
  • 3 fields lat,lon,alt: 44.699631,7.129146,157.2
  • 5 fields name,lat,lon,alt,prec: my control point,44.699631,7.129146,157.2,10