SAGA (System for Automated Geoscientific Analyses) is an open source hybrid Geographic Information System (GIS) software for the analysis of spatial data.
It includes a large number of modules for the analysis of vector (point, line and polygon), table, grid and image data. Among others the package includes modules for geostatistics, image classification, projections, simulation of dynamic processes (hydrology, landscape development) and terrain analysis. The functionality can be accessed through a GUI, the command line or
by using the C++ API.
It features an ‘Application Programming Interface’ (API) for geographic data processing. This API makes it easy to implement new algorithms. The SAGA API supports grid data, vector data, and tables.
It has a fast growing set of geoscientifc methods, bundled in exchangeable Module Libraries.
- File access: interfaces to various table, vector, image and grid file formats.
- Filter for grids: gaussian, laplacian, multi direction lee filter.
- Gridding: interpolation from vector data using triangulation, nearest neighbour, inverse distance.
- Geostatistics: residual analysis, ordinary and universal kriging, single and multiple regression analysis, variance analysis.
- Grid calculator: combine grids through user defined functions.
- Grid discretisation: skeletonisation, segmentation.
- Grid tools: merging, resampling, gaps filling.
- Image classification:cluster analysis, box classification, maximum likelihood, pattern recognition, region growing.
- Projections:various coordinate transformations for vector and grid data (using Proj4 and GeoTrans libraries), georeferencing of grids.
- Simulation of dynamic processes: TOPMODEL, nitrogen distributions, erosion, landscape development.
- Terrain analysis:slope, aspect, curvatures, curvature classification, analytical hillshading, sink eliminition, flow path analysis, catchment delineation, solar radiation, channel lines, relative altitudes.
|New to Linux? Read our Linux for Starters series.|
|The largest compilation of the best free and open source software in the universe. Supplied with our legendary ratings charts.|
|Hundreds of in-depth reviews offering our unbiased and expert opinion on software.|
|Alternatives to Google's Products and Services examines your options to migrate from the Google ecosystem with open source Linux alternatives.|
|Alternatives to Microsoft's Products and Services recommends open source Linux software.|
|Essential Linux system tools looks at small, indispensable utilities, useful for system administrators as well as regular users.|
|Linux utilities to maximise your productivity. Small, indispensable tools, useful for anyone running a Linux machine.|
|Home computers became commonplace in the 1980s. Emulate home computers including the Commodore 64, Amiga, Atari ST, ZX81, Amstrad CPC, and ZX Spectrum.|
|Now and Then examines how promising open source software fared over the years.|
|Linux at Home looks at a range of home activities where Linux can play its part, making the most of our time at home, keeping active and engaged.|
|Linux Candy opens up to the lighter side of Linux. Have some fun!|
|Best Free Android Apps. There's a strict eligibility criteria for inclusion in this series|
|These best free books accelerate your learning of every programming language|
|These free tutorials offer the perfect tonic to the free programming books series|
|Stars and Stripes is an occasional series looking at the impact of Linux in the USA|