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QGIS Anwendergruppe Schweiz - Groupe d'utilisateurs QGIS Suisse - Swiss QGIS User Group
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QGIS-CH Mini-Workshop Visualize LTOP data with Python and Geometry Generators

Insight into LTOP data with the help of Python-scripts and geometry generators. LTOP is the pre-analysis and adjustment software for geodetic networks from Swisstopo and will be made available as Open Source software in the course of the year 2021.
When Dec 30, 2020
from 11:00 PM to 11:00 PM
Where Online
Contact Name Adrian Weber
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Input and Output in LTOP works with specific formatted text files, a graphical output is still missing though. QGIS to the rescue: In this workshop we will learn the following:

  1. Import the LTOP coordinate files (.koo) and visualize them as point layer
  2. Import the LTOP survey files (.mes) and visualize the geodetic network with adequate symbology (orientation, distances)
  3. Import of the LTOP result files (.prn) and visualization of the error ellipses and improvement vectors.

To reach this goal, we will use Python, PyQGIS and clever symbology rules by utilizing geometry generators.

No LTOP knowledge is necessary, no LTOP installation is necessary, knowledge of adjustment software is useful.

Language: german/english. Questions can also be raised in french.

Workshop-Instructor: Adrian Weber

Meeting Link (Google Meet)

Link to Presentation (Google Docs)

Exercise Data on Google Drive (geodata, QGIS styles, Python scripts, LTOP files)

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