SAGA 2.0.0 - Release Notes
System for Automated Geoscientific Analyses
Dear SAGA user community,
after long years of development the SAGA team is now presenting the official release of SAGA version 2.0. Those of you, who used the last stable release 1.2, will first notice the different graphical user interface (GUI). Others will know it already from the previously published release candidates. Also the underlying system architecture changed quite a bit and many modules have been added or could be improved. But all in all the basic concepts of SAGA, like its modular structure, remain untouched and you should be able to use it straight forward.
Like many other software projects, the SAGA development is mainly driven by a small number of core developers with their own specific needs. These needs reflect first of all the demands of a few research projects, in which SAGA is involved. For instance a major influence on the SAGA development during the last year came from a project called GEOSTEP (see http://www.geostep.de for more information), which resulted in a scripting interface for the SAGA-API. Nevertheless, SAGA seems to supply a useful functionality for a wide range of users world wide, who in return submit contributions in form of bug reports, documentation and new modules. We want to thank all these supporters in the world. But due to our very compact developer team structure we also have to apologize, that we cannot always respond immediately to each of your feature requests.
Thanks to the use of the cross platform GUI library wxWidgets (http://wxwidgets.org) SAGA 2.0 now runs under Linux and MS-Windows environments. Thomas Schorr provided an automake-system based source code tarball, which allows an easy compilation under Linux. We expect that this tarball becomes the starting point for regular packages for several Linux distributions in future. Thomas Schorr was also the driving force behind establishing a SAGA-API scripting interface for Python via SWIG (http://www.swig.org). Examples as well as a compiled version for Python v2.3.5 Win32 have been prepared for download.
If you want to compile SAGA 2.0 by yourself you might need to install additional libraries:
- wxWidgets 2.8 (http://wxwidgets.org) absolutely essential for compilation!
- Haru Free PDF Library (http://libharu.sourceforge.net/)
- GDAL (http://www.gdal.org)
- PROJ.4 (http://www.remotesensing.org/proj/)
'saga_2.0.0_bin_mswvc.zip': Windows binaries compiled with MS Visual C++ 6.0. This Windows version is a portable software. Just unzip it and start without any further installation process.
'saga_2.0.0_bin_linux.tar.gz': Linux binaries with the wxGTK libraries statically linked. Except that you have at least the GTK 2 and the png (as reported) libraries to be installed, this version is almost portable too (see the 'install.txt' on how to run the executables).
'saga_2.0.0_src.zip': complete SAGA 2.0 source codes, including project and make files for gcc, MinGW, MSVC6/8.
'saga_2.0.0_src_linux.tar.gz': source code distribution for Linux, created with automake. For compilation call './configure', 'make' and as super user 'make install'.
'saga_2.0.0_python_mswvc.zip': scripting interface to the SAGA-API for Python 2.3.5 (Win32), including example scripts.
A very important contribution related to this release comes from Vern Cimmery, who wrote the 'User Guide for SAGA 2.0'. You find it under the SAGA related documents in this download section. Additionally Vern Cimmery provided us with all data sets he used in his book, so that you can immediately start exploring the capabilities of SAGA 2.0. Although this guide outdates to a certain extent Victor Olaya's previous work, his 'Gentle Introduction to SAGA GIS 1.2' with its comprehensive module descriptions provides particularly for analytical questions still very helpful information.
Though we decided for several reasons to publish the version 2.0 right now, we are aware of a number of still existing bugs and immature features. Hence look out for future releases. And now I wish that you enjoy the world of spatial anlysis with SAGA.
Hamburg, June 5, 2007
e-mail: oconrad AT saga-gis DOT org