Etienne Trimaille

I'm an active contributor in the OpenStreetMap community, mainly with QuickOSM, a QGIS plugin to extract OSM data within QGIS.

For work, I'm working as a GIS developer at 3Liz, mainly focused on QGIS Desktop/Server plugins and the Lizmap opensource project.


Sessions

09-09
11:00
90min
Publish your QGIS project (layers, forms, print layout...) on the internet using Lizmap
Etienne Trimaille

Lizmap is an opensource server application to publish QGIS project (layers, symbology, PDF layouts, forms and dataviz) on the web without any coding skills needed.
It's using QGIS Server in the backend so users have the same rendering between their
QGIS Desktop and the web version of their project.

Some additional Lizmap configuration can be added to have dataviz capabilities, decide or not to publish the attribute table or to configure the feature filter form. All the configuration is done using QGIS Desktop user interface.

For this workshop, we will provide you the online instance of Lizmap. You only need to have QGIS 3.34 (LTR version recommended).

We will create a web mapping application from scratch, with layers, editing capabilities. We will display some plots and enable exporting the map as PDF with a custom layout/logo.

Workshop
B310
09-09
16:00
30min
PgMetadata - A QGIS plugin to store the metadata of PostgreSQL layers inside the database, and use them inside QGIS
Etienne Trimaille

PgMetadata is made for people using QGIS as their main GIS application, and PostgreSQL as their main vector data storage.

The layers metadata are stored inside your PostgreSQL database, in a dedicated schema. Classical fields are supported, such as the title, description, categories, themes, links, and the spatial properties of your data.

PgMetadata is not designed as a catalog application which lets you search among datasets and then download the data. It is designed to ease the use of the metadata inside QGIS, allowing to search for a data and open the corresponding layer, or to view the metadata of the already loaded PostgreSQL layers.

By storing the metadata of the vector and raster tables inside the database:

QGIS can read the metadata easily by using the layer PostgreSQL connection: a dock panel shows the metadata for the active layer when the plugin detects metadata exists for this QGIS layer.
QGIS can run SQL queries: you can use the QGIS locator search bar to search for a layer, and load it easily in your project.

The administrator in charge of editing the metadata will also benefit from the PostgreSQL storage:

PostgreSQL/PostGIS functions are used to automatically update some fields based on the table data (the layer extent, geometry type, feature count, projection, etc.).
The metadata is saved with your data anytime you backup the database
You do not need to share XML files across the network or install a new catalog application to manage your metadata and allow the users to get it.

And the plugin contains some processing algorithms to help the administrator.

B320
09-10
14:00
30min
State of Lizmap - Past / Present / Future
Etienne Trimaille

Lizmap is an opensource server application to publish QGIS project on the web without any coding skills needed.
It's using QGIS Server in the backend so users have the same rendering between their QGIS Desktop and the web version of their project.

QGIS Server and Lizmap are reading QGIS project to publish layers with their legend, forms, print layout, layer relationships... Some additional Lizmap configuration can be added to have dataviz capabilities, decide or not to publish the attribute table or to configure the feature filter form. No coding skills are required, all the configuration is done using QGIS Desktop user interface.
The QGIS project is adapted for web browsers and have a responsive UI. Lizmap include some Access Control List at different levels such as project, layer or even features.

The goal of this presentation is to show the state of this opensource project hosted on GitHub and to explain the roadmap.

B316 (BAT)