195d98f43a
The SAGA version of this algorithm is of limited use in QGIS, because the volume calculated is embedded only in the SAGA terminal output. This prevents it being saved to a file, or reused within a model as an input to a later model step. It's also very user-unfriendly, because users must know to manually scan the algorithm log to find the SAGA output. Given that the maths here is trivial, this commit ports the algorithm across to be a native QGIS c++ algorithm. The algorithm duplicates the SAGA alg 1:1, but outputs the volume (and area) to either a HTML report, or a vector table. Additionally, the outputs are exported as numeric outputs from the algorithm, allowing them to be re-used within models. (It's also considerably faster, because it avoids the forced conversion to SAGA raster format) Fixes #8607 (properly, even though that report is closed)
About QGIS
QGIS is an Open Source Geographic Information System. The project was born in May of 2002 and was established as a project on SourceForge in June of the same year. We've worked hard to make GIS software (which is traditionally expensive commercial software) a viable prospect for anyone with basic access to a Personal Computer. QGIS currently runs on most Unix platforms (macOS/OS X included) and Windows. QGIS is developed using the Qt toolkit and C++. This means that QGIS feels snappy to use and has a pleasing, easy to use graphical user interface.
QGIS aims to be an easy to use GIS, providing common functions and features. The initial goal was to provide a GIS data viewer. QGIS has reached that point in its evolution and is being used by many for their daily GIS data viewing and editing needs. QGIS supports a number of raster , vector and mesh data formats, with new support easily added using the plugin architecture.
QGIS is released under the GNU Public License (GPL) Version 2 or above. Developing QGIS under this license means that you can (if you want to) inspect and modify the source code and guarantees that you, our happy user will always have access to a GIS program that is free of cost and can be freely modified.
Supported raster formats include:
- GRASS
- USGS DEM
- ArcInfo binary grid
- ArcInfo ASCII grid
- ERDAS Imagine
- SDTS
- GeoTiff
- Tiff with world file
- WMS, WCS
Supported vector formats include:
- ESRI Shapefiles
- PostgreSQL/PostGIS
- GRASS
- GeoPackage
- SpatiaLite
- Other OGR supported formats
- MSSQL
- Oracle
- WFS
Supported mesh formats include:
- NetCDF
- GRIB
- 2DM
- Other MDAL supported formats
Note
Please follow the installation instructions carefully.
After extracting the distribution, you can find the HTML version of the
installation document in qgis/doc/index.html. The installation document is
also available as PDF in the same directory.
Help us
Please submit bug reports using the QGIS bug tracker. When reporting a bug, either login or, if you don't have a qgis trac, provide an email address where we can request additional information.
Support
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- Using the QGIS community site at https://qgis.org
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Please wait around for a response to your question as many folks
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Contribute
QGIS is on GitHub at https://github.com/qgis/QGIS. If you wish to contribute patches you can fork the project, make your changes, commit to your repository, and then create a pull request. The development team can then review your contribution and commit it upstream as appropriate. If you commit a new feature, add [FEATURE] to your commit message AND give a clear description of the new feature. A webhook will automatically create an issue on the QGIS-Documentation repo to tell people to write documentation about it.
If you are not a developer, there are many other possibilities which do not require programming skills to help QGIS to evolve. Check our project homepage for more information.