Published: Jun 19, 2024 by C.H. Grohmann
The GRASS GIS 8.4.0RC1 release provides more than 515 improvements and fixes with respect to the release 8.3.2.
Check the full announcement at https://github.com/OSGeo/grass/releases/tag/8.4.0RC1.
Please support in testing this release candidate.
Highlights
- location becomes project: The Python API, command line, and graphical user interface are now using project instead of location for the main component of the data hiearchy while maintaining backward compatibility.
- v.fill.holes: New tool to remove inner isles and to keep outer boundary only
- i.svm: New support vector machine image classification (SVM)
- r.horizon: Output for multiple points, distances, and many other improvements
- r.univar: Parallelization computation extended statistics
- JSON output format support (format=”json”) in multiple tools (e.g., r.report, r.info, v.db.select, t.rast.list, etc.)
- New grass.jupyter.SeriesMap class for animating series of vectors or rasters
- ipyleaflet integration for grass.jupyter to create a map in ipyleaflet and add GRASS data in a single line
- Greatly simplified the creation of new projects in Python (no more chicken and egg problems) - also in Jupyter notebooks
- GUI: New easy command history navigation through the History browser panel browser panel
- GUI: Further improvements of new single-window GUI with undockable map display window, for a smoother user experience
- New GRASS GIS Programming Style Guide
https://github.com/OSGeo/grass/blob/main/doc/development/style_guide.md
New Addon Tools
- i.eodag https://grass.osgeo.org/grass-stable/manuals/addons/i.eodag.html: Downloads imagery datasets from various providers through the EODAG API.
- r.flowaccumulation https://grass.osgeo.org/grass-stable/manuals/addons/r.flowaccumulation.html: Calculates flow accumulation from a flow direction raster map using the Memory-Efficient Flow Accumulation (MEFA) parallel algorithm by Cho (2023).
- r.fusion https://grass.osgeo.org/grass-stable/manuals/addons/r.fusion.html: image fusion, generalized pan-sharpening.
- r.windfetch: addon for computing wind fetch.
- r.maxent.train https://grass.osgeo.org/grass-stable/manuals/addons/r.maxent.train.html
- r.maxent.predict https://grass.osgeo.org/grass-stable/manuals/addons/r.maxent.predict.html: train, and predict a Maxent model to create a suitability distribution layer.
