Michaël DOUCHIN

QGIS and PostgreSQL lover for 20 years
Co-inventor of Lizmap Web Client.

I live in Montpellier, France and love tennis 🎾 and hiking 🥾
I work for 3Liz company


Session

10-06
09:00
90min
🦎 Lizmap Web Client - 📊 Creating interactive data visualization (charts)
René-Luc Dhont, Michaël DOUCHIN

Lizmap Web Client is an open-source software allowing to publish web map applications based on QGIS projects.
All layers managed in QGIS can be visualized in Lizmap, and vector layers can also contain information that is worth displaying using charts: bar charts, line graphs, pie charts and tables.

The aim of this workshop is to demonstrate how to create and display plots in the Lizmap interface using vector data (PostgreSQL, FGB, CSV, etc.).

A project with ready-made data will be provided to the participants. We will use weather data from the website https://open-meteo.com/ (Free and open-source weather API).

You can view an example of how Lizmap can display graphs at this address:
https://demo.lizmap.com/lizmap/index.php/view/map?repository=features&project=land_use
In this demo, you can for example select another layer in the left panel (such as "
Postes clés") to see other charts, or choose a municipality in the combo box "Localisation" (top right of the map) to filter the visible charts for a specific municipality.

Workshop schedule:

  • Get the QGIS project and publish the first map
  • Presentation of the data (municipalities, weather)
  • The main principles of data visualisation in Lizmap
  • The different types of charts available (bar, pie, polar, histogram, HTML, etc.)
  • Creating and publishing charts on the web map
  • Filtering charts dynamically
  • Viewing filtered charts for the queried feature
  • Organizing charts with tabs and groups
  • HTML charts for greater flexibility
  • Printing using the server-side Dataplotly plugin
Short Workshop (90min)
Bridge 1-Short Workshops