06-03, 10:00–10:30 (Europe/Stockholm), Huvudrollen
This presentation aims to show many of the more recent improvements in the area of QGIS symbology and automatic labeling using real-world map examples. Furthermore, some older, probably little-known options that have been in QGIS for quite some time will be demonstrated: selective masking of labels and symbols, overridable symbol layers, complex line types, and tips and tricks for expressions and data-defined properties.
The following techniques will be demonstrated based on data used in the National Atlas of Switzerland:
- Stacked diagrams (new in QGIS 3.40)
- Partial pie charts (new in QGIS 3.40)
- More complex HTML labels with images (new in QGIS 3.40)
- Automated labeling (available for quite some time but continuously improved)
- Linear referencing labels (new in QGIS 3.40)
- Selective masking (available for quite some time but with recent improvements)
- Cartographically pleasing dashed lines (always full dashes at line ends, no gaps at sharp angles)
- Tricks with symbol levels and layer drawing order
- Representation of LiDAR data with eye dome lighting and blend modes
- Multiple Styles per layer and map themes (layer/style combinations)
- Potentially some time-manager tricks (if there is still time ...)
The techniques are shown based on examples in the domains of topography, LiDAR, bathymetry, railway, renewable energy and LiDAR.
- Bathymetry map of Lake Lucerne. Example demonstrates use of hillshading, blend modes, automated labeling and selective masking of labels and symbols. (2.5 MB)
- Map of hydropower expansion projects demonstrating the use of stacked bar charts. (1.5 MB)
- A railway map of the Albula railway section of RhB in Grison. Demonstrates the use of data-defined symbology, line-offsets, dashing, marker lines and automated labeling. (2.1 MB)
Andreas is the project manager of the Atlas of Switzerland at the Institute of Cartography and Geoinformation at ETH Zurich. Together with a team of developers and editors, he is working on the future web version of the Swiss National Atlas. In addition to his work on the “Atlas of Switzerland”, he also teaches cartography and geoinformatics at ETH Zurich. He is also involved in the QGIS steering committee (PSC) as treasurer. In addition to QGIS, other FOSSGIS tools such as PostgreSQL/Postgis, GDAL/OGR, PDAL, Python, etc. are used.