QGIS --- Create and move point using external python in an offline environment

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I'm pretty new to QGIS and GIS.I have an python application that get periodically position [lat,long,height] updates of several moving objects.

The idea is that the existing application sends the data to QGIs and QGIS prints the objects as a plain circle on the map. In the next loop, QGIS receives a updated set of the objects and moves/reprints them at the given location. My Questions are:

  • How do I access the API from an external python script?
  • Do I have to create a layer for the objects?
  • How do I create a layer from an external script?
  • How do I send an object to QGIS or print it?
  • How do I move/update these obejcts or is it faster to delete and reprint all objects?
  • Could QGIS get the object information from a SQLite-DB?
Best Regards,Sven



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