QGIS Algorithms (version 3.12)

Execute QGIS algorithms outside of QGIS GUI

Requirements

• python 3.6+
• QGIS 3.12+

Installation

Ubuntu 18.04

• python3

sudo apt-get install python3

• QGIS 3.12

1. add the following to /etc/apt/sources.list

deb https://qgis.org/ubuntu bionic main

2. add qgis.org repository public key to your apt keyring

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-key 51F523511C7028C3

3. install QGIS - see QGIS official installation page

sudo apt-get update
sudo apt-get install qgis qgis-plugin-grass

4. add to your .bashrc or .bash_profile

export PYTHON_PATH=/usr/share/qgis/python

# for GPU-less machines
export QT_QPA_PLATFORM='offscreen'

Modules

Help

• display algorithm usage
• list algorithms

Algorithms

• add autoincremental field
• create grid
• join attributes by location
• polygon from layer extent
• simplify geometries
• split with lines

TODOs

• Use argparse.ArgumentParser