QGIS

QGIS is a professional GIS application that is built on top of and proud to be itself Free and Open Source Software (FOSS)

🌐 qgis.org, docs

Documentation

• Demo
• The graphical modeler

Plugins

Visit QGIS plugins web portal.

Name	Details
OGR2Layers	github
QuickMapServices	github
Qgis2threejs	qgis2threejs.readthedocs.io, examples
mmqgis	plugins.qgis.org, github
Plugin reloader	github
Plugin builder	github

How-to create a QGIS plugin

• Reference

  • QGIS Coding Standards
  • Developing Python Plugins
  • Building a Python Plugin

• Steps

  • Download osgeo4w (doesn't work... seems not needed), QtCreator (offline-installer)
  • Install QGIS plugins (extensions): Plugin Builder, Plugin Reloader (experimental)
  • Look at C:\Users\username\.qgis2\python\plugins, this is where plugins are loaded
  • Edit the file C:\Program Files\QGIS 2.18\bin\o4w_env.bat and add C:\Qt\Qt5.10.1\Tools\mingw530_32\bin to SET PATH commmand line, then open a dos window.
  • Install MinGW

  cd C:\Qt\Qt5.10.1\Tools\mingw530_32\bin
  copy mingw32-make.exe make.exe

  • In Windows, search for "OSGeo4W Shell", open the application.

  cd C:\Users\bertrand.thomas\.qgis2\python\plugins\MyPluginName
  make
  REM pyrcc4 -o resources.py  resources.qrc

  • Think about reload the plugin repository when the plugin directory is directly updated!

QGIS in Docker

How-to run QGIS container on Windows 10

• First you need to install an X server, XMingin our case (download from sourceforge.net.

• Create a docker-compose.yml file:

  db:
    image: kartoza/postgis:latest
    environment:
      - USERNAME=docker
      - PASS=docker
  
  qgisdesktop:
    image: kartoza/qgis-desktop:latest
    hostname: qgis-server
    volumes:
      # Wherever you want to mount your data from
      # TODO
      # Unix socket for X11
      - C:\Users\bertrand.thomas\.X11-unix:/tmp/.X11-unix
    links:
      - db:db
    environment:
      - DISPLAY=192.168.1.48:0
    command: qgis

• Edit C:\Program Files (x86)\Xming\X0.hosts to add the IP address (192.168.1.48)

• Execute from the command line (in the directory where the docker-compose file has been created):

  docker-compose up

• From QGIS you can add PostgreSQL DB access, you'll need to get the DB IP address

  docker inspect kartoza_db_1

It works!

References:

• github kartoza/docker-qgis-desktop
• wiki osgeo DockerImages

TODO:

• Update docker compose file to
  • Fix QGIS version 2.18.17
  • Fix PostgreSQL version 9.6.7
  • Install Python (2.7)
  • Fix file errors in the console (missing mapping)