alti3D

Technical Details

Structure

The data is delivered as a grid with an aperture width of 2 m, 5 m or 10 m. swissALTI3D is available in the following file formats:

  • Geotiff
  • ESRI ASCII Grid
  • ESRI File Geodatabase 10.1
  • ASCII X,Y,Z single space

Coordinate system

swissALTI3D is available in the following Swiss coordinate systems:

  • LV03 LN02
  • LV95 LN02

Quality

The information provided corresponds to the accuracies of all three dimensions

Laser points (less than 2000 metres above sea level): ±0.5 m 1σ

Stereo correlation  (more than 2000 metres above sea level): 1 - 3 m average error

Manual updates (individual points, breaklines and areas): 25 cm - 1 m average error 

Documents

Almost every publication concerning the swissALTI3D is available only in German and French. Please select your preferred language in the navigation bar, to view the desired document.

Sample Data

The sample data show their type and format. They are free of charge and can be used for test purposes only. It is not allowed to include them in a product.