QGIS

Ein freies Open-Source-Geographisches-Informationssystem. Erstellen, bearbeiten, anzeigen, analysieren räumlicher Information unter Windows, Mac, Linux, BSD (bald auch Android). Für Ihren Desktop, Server, im Webbrowser und als Bibliothek zur Entwicklung (www.qgis.org).

https://www.fossgis.de
https://www.fossgis.de/taxonomy/term/1

GIS lernen

http://gisgeography.com/what-gis-geographic-information-systems/

Fortbildung

http://www.gis-trainer.de/
http://www.worldcampus.psu.edu/degrees-and-certificates/geographic-information-systems-gis-masters/courses
http://www.worldcampus.psu.edu/gep?cm_mmc=GEOSPATIAL+EDUCATION+PORTFOLIO+11-12-_-Geocommunity+Online-_-Email:Paid-_-Email-Learn-More+(MIN40682)

Atlas

http://gisgeography.com/how-to-create-qgis-atlas-mapbooks/

Nice Maps

http://cargocollective.com/somethingaboutmaps/The-Driftless

http://www.spinunit.eu/portfolio/a-sense-of-place/

Shaded Reliefs

http://www.shadedrelief.com/texture_shading/

http://www.shadedrelief.com/


http://www.digital-geography.com/gis-with-javascript-tutorial-part-1/
http://www.digital-geography.com/gpx-overview-r-function-create-overview-gpx-files-using-leaflet-rgooglemaps/

Code Schnipsel

QGIS: List of Field Calculator Functions
Python: Regular expression operations

"Finden und Ersetzen" -> regexp_replace

Beispiel:

regexp_replace("filename", '.JPG','.jpg')

select features with NULL attributes in QGIS

is NULL

statt

= NULL

„extract“ z-values 

geometry: z ($geometry)

Quelle: http://isticktoit.net/?p=1359

Georeferencing vector data using QGIS and ogr2ogr

http://gisforthought.com/georeferencing-vector-data-using-qgis-and-ogr2ogr/

Labelling

CASE WHEN      $id%5    =0 THEN    "yourfield"    END

http://gis.stackexchange.com/questions/133875/how-to-label-values-every-5th-number

Expressions

http://docs.qgis.org/2.8/de/docs/user_manual/working_with_vector/expression.html