<center><b>Press Release<br>The GRASS Development Team announces</b>
<h2>GRASS GIS 6.4.0 released</h2>
</center>
<br>
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We are pleased to announce the release of
<a href="http://grass.osgeo.org/">GRASS GIS 6.4.0</a>, the first in the
new line of 6.4 stable releases. As a stable release 6.4 will enjoy
long-term support. The next release (6.4.1) will introduce a few new
features which are still undergoing final testing, but after that all
further 6.4 releases will be bugfix-only. Due to our highly conservative
stabilization policy this is the first official version of GRASS to
introduce new features since October 2006 and supersedes the previous
stable line of GRASS 6.2. As such the floodgates are open and there are
many new features to explore and many new structural improvements to be
found in the software.
<p>
GRASS 6.4 brings a number of exciting enhancements to the GIS. Our new
<em>wxPython graphical user interface</em> (wxGUI) is debuted, Python
is now a fully supported scripting language, and for the first time
since its inception with a port from the VAX 11/780 in 1983, GRASS
will now run natively on a non-UNIX based platform: MS-Windows!
In addition to bringing the software to a host of new users, the ability
to run GRASS on any common computer platform furthers our goal of open
access to the software. We hope you will enjoy the ability to use this
program on the systems that are most convenient to you and your work.
</p><p>
Due to the freshness of <em>WinGrass</em> there may still be a few rough
edges yet to discover, but after more than a year of dedicated testing
and quality-assurance review we are very pleased with the results.
Users can be confident to use this version for their day to day work,
indeed due to the open development model many already do. Existing UNIX
and Mac users will be happy to know that these new features do not disrupt
the base GIS which remains as solid as ever and fully backwards compatible
with earlier GRASS 6.0 and 6.2 releases. The venerable Tcl/Tk
GUIs are also still available if you prefer to use them.
</p><p>
The GRASS software including over 400 built-in analysis modules and 100 community
supplied add-on modules and toolboxes can be downloaded for free from the
main GRASS website at
<a href="http://grass.osgeo.org/">http://grass.osgeo.org</a>, or from many
local mirrors worldwide. In addition to the extensive documentation which
comes with the software, our
<a href="http://grass.osgeo.org/wiki">Wiki help system</a>
contains a wealth of user supplied tips and tricks, tutorials, and guides.
</p><p>
Since 6.4 entered the testing phase work has begun on GRASS 7 and is
progressing rapidly, including many new wxGUI improvements and tools
which we hope to bring over for the upcoming 6.4.1 release.
</p><h3>About GRASS GIS</h3>
The <i>Geographic Resources Analysis Support System</i>, commonly referred to
as GRASS, is a Geographic Information System (GIS) providing powerful raster,
vector, and geospatial processing engines in a single integrated software
suite. GRASS includes tools for spatial modeling, visualization of raster and
vector data, management and analysis of geospatial data, and the processing of
satellite and aerial imagery. It also provides the capability to produce
sophisticated presentation graphics and hardcopy maps. GRASS has now been
translated into twenty languages and supports a huge array of data formats.
<p>
GRASS is a founding member of <a href="http://www.osgeo.org/">The Open
Source Geospatial Foundation</a> (OSGeo), a non-profit legal entity which
has enjoyed extraordinary growth. We expect that this formal infrastructure
will guarantee that the GRASS community will be well supported and vibrant
far into the future.
</p><p>
GRASS is currently used around the world in academic and commercial settings
as well as by many governmental agencies and environmental consulting companies.
It runs on a variety of popular hardware platforms and is Free open-source
software released under the terms of the
<a href="http://www.gnu.org/licenses/gpl-2.0.html">GNU General Public License</a>.
</p><p>
Users are encouraged to study, customize, extend, improve, and (if
necessary) diagnose and repair the inner workings of any part of the program.
We believe that scientific progress depends on the reproducibility of results,
which in turn depends on the unhindered ability of the user to know, evaluate,
double-check, and learn from all algorithms and methodologies used in the process
of their work.
</p><h3>Screenshots</h3>
<ul><li><a href="http://grass.osgeo.org/screenshots/index.php">Screenshots</a>
of GRASS in action
</li></ul>
<h3>Platforms supported by GRASS</h3>
<p>GNU/Linux, Mac OS X/Darwin, Microsoft Windows (native using MinGW or with
full UNIX support via Cygwin), Sun Solaris (SPARC/Intel), Silicon Graphics
Irix, HP-UX, DEC-Alpha, AIX, the BSD family, iPAQ/Linux and other UNIX
compliant platforms. GRASS runs on both 32 and 64 bit systems with large
data file (>2GB) support for most key modules.
</p><h3>Software download/CDROM</h3>
<ul><li><a href="http://grass.osgeo.org/download/index.php">http://grass.osgeo.org</a></li><li><a href="http://grass.ibiblio.org/download/index.php">http://grass.ibiblio.org</a></li><li>numerous <a href="http://grass.osgeo.org/mirrors.php">mirror sites</a></li>
<li><a href="http://grass.osgeo.org/download/cdrom.php">GRASS on CDROM/DVD</a></li></ul>
<p>
The new source code is available now and binary packages for major operating
systems will be published shortly.</p>
<p>
For details on GRASS software capabilities please refer to:
<a href="http://grass.osgeo.org/intro/general.php">http://grass.osgeo.org/intro/general.php</a>,
and the <a href="http://grass.osgeo.org/wiki">Wiki
collaborative help system</a>.
</p><h3>What's new in GRASS 6.4.0</h3>
(selected improvements from the nearly 9,000 updates to the source code)
<ul><li>Source code quality/libraries:
<ul><li> Many internal adjustments needed for native MS-Windows support,
for example safely handling spaces in file names.
</li><li> <a href="http://grass.osgeo.org/programming6/">Programmer's Manual</a>:
continued Doxygen integration and automated generation into PDF and HTML
formats. Publicly available for download and perusal.
</li><li> Improved policies for code submission specified in the
SUBMITTING files for documentation, Python, Tcl/Tk, and shell scripts
</li><li> New Python scripting language library containing many helper functions
</li><li> All modules: <tt>--quiet</tt> and <tt>--verbose</tt> message modes
</li><li> All modules: <tt>--script</tt> flag generates boilerplate for shell scripts
with parser and GUI support
</li><li> Batch mode for launching GRASS for non-interactive processing tasks
</li><li> DBMI: SQL parser extended (support for DROP COLUMN, ASC/DESC keyword
in ORDER BY clause, etc.)
</li><li> Partial differential equations library with OpenMP multi-processor support
</li><li> Major clean-up of the display architecture (libraries and drivers):
the drivers no longer maintain a palette; all colors are now specified
directly as R/G/B values
</li><li> The "default" datum transformation parameters are now first in the list
instead of last
</li><li> Ability to create new locations using EPSG codes with the <em>g.proj</em> module
</li><li> Message translation (i18N): many new translated messages, new languages
including Vietnamese and Arabic
</li><li> Documentation/man pages: various fixes and improvements (more examples
added, including graphics, improved style, new introductory pages)
</li><li> Documentation: various terminology issues fixed and terms unified
</li><li> Symbols: A number of new icons, support for symbol rotation
</li></ul>
</li><li> Graphical User Interface (GUI):
<ul><li><b>g.gui</b>: New frontend command to launch GUI sessions
</li><li> <b>wxPython GUI</b>:
<ul><li> Complete <a href="http://grass.osgeo.org/wiki/WxGUI">GUI
rewrite in Python/wxWidgets</a>
</li></ul>
</li><li> <b>gis.m Tcl/Tk GUI</b>:
<ul><li> GIS manager extended with mouse placement of text and scale bars
and menu updates
</li><li> Updated Tcl/Tk profile and georectification GUI tools
</li><li> New interactive command console with output window
</li><li> New interfaces for interactive raster reclassification, raster
recoding, custom raster color rules, and vector reclassification
</li><li> New animation tool to display raster map series as an animation
</li></ul>
</li><li> Improved startup screen and interface, including searchable EPSG
codes list and better custom datum support
</li><li> <b>NVIZ</b>: Major revamp of interface; output directly to MPEG or
other FFmpeg supported formats
</li><li> <b>QGIS integration</b>: GRASS toolbox extended, available from
<a href="http://www.qgis.org/">Quantum GIS</a>
</li></ul>
</li><li> Drivers:
<ul><li> <b>DBF driver</b>: extended column type support
</li><li> <b>HTMLMAP display driver</b>: <font color="red">NEW</font> -
Prepares clickable HTML image map templates (port from GRASS 5)
</li><li> <b>PostScript display driver</b>: <font color="red">NEW</font> -
Renders display directly into a PostScript or Encapsulated PostScript file
</li><li> <b>Cairo display driver</b>: <font color="red">NEW</font> -
Renders display directly into a number of image formats using
the <a href="http://www.cairographics.org/">Cairo</a> rendering
engine
</li></ul>
</li><li> New and major updates for modules and scripts since GRASS 6.2.3:
<ul><li> <b>db.dropcol</b>: <font color="red">NEW</font> -
Drops a column from selected attribute table
</li><li> <b>db.droptable</b>: <font color="red">NEW</font> -
Drops an attribute table
</li><li> <b>db.in.ogr</b>: <font color="red">NEW</font> -
Imports attribute tables in various formats
</li><li> <b>db.login</b>:
Support for interactive password entry (invisible passwords)
</li><li> <b>db.out.ogr</b>: <font color="red">NEW</font> -
Exports attribute tables into various formats
</li><li> <b>d.barscale</b>: North arrow for lat/lon locations
</li><li> <b>d.out.file</b>: Expanded to use the Cairo and PostScript display
drivers to allow export to ps, eps, svg, and pdf formats
</li><li> <b>d.path</b>: Support for use from GUI and non-interactive mode
</li><li> <b>d.rast.edit</b>: Rewritten in Tcl/Tk
</li><li> <b>d.shadedmap</b>: <font color="red">NEW</font> -
Drapes a semi-transparent raster over a shaded relief map
</li><li> <b>d.text</b>, <b>d.font</b>: Updated to accept TrueType fonts and
maintain a database of system fonts
</li><li> <b>g.dirseps</b>: <font color="red">NEW</font> -
Internal utility for converting directory characters (MS-Windows)
</li><li> <b>g.extension</b>: <font color="red">NEW</font> -
Utility for downloading and installing Add-on modules
</li><li> <b>g.findetc</b>: <font color="red">NEW</font> -
Internal utility for locating support files
</li><li> <b>g.gui</b>: <font color="red">NEW</font> -
Launches a GRASS graphical user interface (GUI) session
</li><li> <b>g.message</b>: <font color="red">NEW</font> -
Internal utility for printing quiet and verbose messages in scripts
</li><li> <b>g.mkfontcap</b>: <font color="red">NEW</font> -
Internal utility for generating a list of available system fonts
</li><li> <b>g.mremove</b>: Support for use from GUI
</li><li> <b>i.atcorr</b>: <font color="red">NEW</font> -
Performs atmospheric correction using the 6S algorithm
</li><li> <b>i.landsat.rgb</b>: Vast speed improvement
</li><li> <b>ps.map</b>: Various improvements including new map border control,
rotated and scaled symbols, and allowing geogrid from lat/lon locations
</li><li> <b>r3.gwflow</b>: <font color="red">NEW</font> -
Models transient, confined groundwater flow in three dimensions
</li><li> <b>r3.stats</b>: <font color="red">NEW</font> -
Generates volume statistics for raster3d maps
</li><li> <b>r3.univar</b>: <font color="red">NEW</font> -
Calculates univariate statistics from the cells of a 3D raster map
</li><li> <b><strike>r.bilinear</strike></b>:
This module has been replaced by r.resamp.interp
</li><li> <b>r.category</b>: <font color="red">NEW</font> -
Manages raster map category values and labels (replaces r.cats)
</li><li> <b>r.colors</b>: Support for equalized histogram, reversed,
logarithmically scaled, rules-from-file, and more
</li><li> <b>r.gwflow</b>: <font color="red">NEW</font> -
Models transient, confined groundwater flow in two dimensions
</li><li> <b>r.in.wms</b>:
Various fixes and more robust when dealing with flaky WMS servers
</li><li> <b>r.in.xyz</b>: Support for extended statistics
</li><li> <b>r.le suite</b>: Various fixes and modernization
</li><li> <b><a href="http://r.li">r.li</a> suite</b>: <font color="red">NEW</font> -
Advanced toolset for multiscale analysis of landscape structure.
<br>Including single and multi-processor enabled modules:
r.li.cwed, r.li.dominance, r.li.edgedensity, r.li.mpa, r.li.mps, r.li.padcv,
r.li.padrange, r.li.padsd, r.li.patchdensity, r.li.patchnum, r.li.richness,
r.li.setup, r.li.shannon, r.li.shape, and r.li.simpson
</li><li> <b>r.mfilter.fp</b>: <font color="red">NEW</font> -
Raster map custom matrix filter (floating point version)
</li><li> <b>r.out.gdal</b>: New C implementation replaces shell script version,
<i>region sensitive</i> with color export ability
</li><li> <b>r.out.xyz</b>: <font color="red">NEW</font> -
Exports a raster map to a text file as x,y,z values based on cell centers
</li><li> <b>r.profile</b>: Report data outside the current region as invalid
</li><li> <b>r.proj</b>: Replaced with an improved version
</li><li> <b>r.resamp.interp</b>: <font color="red">NEW</font> -
Resamples raster map layers to a finer grid using interpolation
</li><li> <b>r.resamp.stats</b>: <font color="red">NEW</font> -
Resamples raster map layers to a coarser grid using aggregation
</li><li> <b>r.support</b>: Enhanced control of meta-data
</li><li> <b>r.support.stats</b>: <font color="red">NEW</font> -
Support module which updates raster map statistics
</li><li> <b>r.univar</b>: Support for extended statistics
</li><li> <b>r.watershed</b>: Vast speed improvement
</li><li> <b>r.what.color</b>: <font color="red">NEW</font> -
Queries colors for a raster map layer
</li><li> <b>v.db.dropcol</b>: <font color="red">NEW</font> -
Drops a column from the attribute table connected to a given vector map
</li><li> <b>v.db.join</b>: <font color="red">NEW</font> -
Allows to join a table to a vector map table
</li><li> <b>v.db.renamecol</b>: <font color="red">NEW</font> -
Renames a column in the attribute table connected to a given vector map
</li><li> <b>v.db.univar</b>: <font color="red">NEW</font> -
Calculates univariate statistics on selected table column for a vector map
</li><li> <b>v.digit</b> (Tcl/Tk): Rewritten for use without X11
</li><li> <b>v.digit</b> (wxPython): <font color="red">NEW</font> -
All new vector map digitizer rewritten in wxPython
</li><li> <b>v.edit</b>: <font color="red">NEW</font> -
Edits a vector map, allows adding, deleting and modifying selected
vector features
</li><li> <b>v.generalize</b>: <font color="red">NEW</font> -
Generalization of vector features using a number of smoothing techniques
</li><li> <b>v.in.db</b>: More efficient implementation of the where= option
</li><li> <b>v.in.wfs</b>: <font color="red">NEW</font> -
Import GetFeatures from WFS format
</li><li> <b>v.net.visibility</b>: <font color="red">NEW</font> -
Visibility graph construction
</li><li> <b>v.out.svg</b>: <font color="red">NEW</font> -
Exports a vector map to SVG format
</li><li> <b>v.proj</b>: Better handling of z coordinates in 3-D vectors
</li><li> <b>v.support</b>: <font color="red">NEW</font> -
Updates vector map metadata
</li><li> <b>v.surf.idw</b>, <b>v.surf.bspline</b>, and <b>v.surf.rst</b>: Work with massive datasets
imported without topology (e.g. LIDAR)
</li><li> <b>v.to.3d</b>: <font color="red">NEW</font> -
Performs transformation of 2D vector features to 3D
</li></ul>
</li></ul>
<p>
A more detailed description of changes can be found in the previous
announcements of the <a href="http://grass.osgeo.org/announces/announce_grass630.html">GRASS 6.3</a>
development preview release and the
<a href="https://trac.osgeo.org/grass/wiki/WikiStart#Releases">GRASS 6.4.0
release candidate</a> series.
</p><p>
For a comprehensive list of changes see the
<a href="http://grass.osgeo.org/grass64/source/ChangeLog_6.4.0.gz">6.4 ChangeLog</a> file.
</p><p>
For a complete list of commands available in GRASS 6.4.0 see the
<a href="http://grass.osgeo.org/grass64/manuals/html64_user/index.html">online manuals</a>
and the
<a href="http://grass.osgeo.org/gdp/grassmanuals/grass64_module_list.pdf">GRASS 6.4 module list</a>.
</p>
<p><br><i>We are always looking for testers, code developers, and technical
writers to <a href="http://grass.osgeo.org/devel/index.php">help us</a>
maintain and accelerate the development cycle.</i>
The GRASS GIS project is developed under the terms of the
<a href="http://www.gnu.org/licenses/gpl-2.0.html">GNU General Public License</a>
(the GPL) <a href="http://grass.osgeo.org/devel/index.php">in the open</a> by
<a href="http://grass.osgeo.org/community/index.php">volunteers</a> the
<a href="http://mapserver.gdf-hannover.de/grassusers/map.phtml">world over</a>.
GRASS differs from many other GIS software packages used in the professional
world in that it is developed and distributed by users for users, mostly on a
volunteer basis, in the open, and is given away for free.
Emphasis is placed on interoperability and unlimited access to data as well as
on software flexibility and evolution rate.
</p>
<p>
Release history:
</p><ul><li> <a href="http://trac.osgeo.org/grass/wiki/Release/6.4.0RC1-News">GRASS GIS 6.4.0RC1</a> released 23 Dec 2008
</li><li> <a href="http://trac.osgeo.org/grass/wiki/Release/6.4.0RC2-News">GRASS GIS 6.4.0RC2</a> released 12 Jan 2009
</li><li> <a href="http://trac.osgeo.org/grass/wiki/Release/6.4.0RC3-News">GRASS GIS 6.4.0RC3</a> released 26 Jan 2009
</li><li> <a href="http://trac.osgeo.org/grass/wiki/Release/6.4.0RC4-News">GRASS GIS 6.4.0RC4</a> released 12 Apr 2009
</li><li> <a href="http://trac.osgeo.org/grass/wiki/Release/6.4.0RC5-News">GRASS GIS 6.4.0RC5</a> released 9 Jun 2009
</li><li> <a href="http://trac.osgeo.org/grass/wiki/Release/6.4.0RC6-News">GRASS GIS 6.4.0RC6</a> released 20 Mar 2010
</li><li> <a href="http://trac.osgeo.org/grass/wiki/Release/6.4.0RC7-News">GRASS GIS 6.4.0RC7</a> released 27 Aug 2010
</li><li> <b>GRASS GIS 6.4.0 released 3 September 2010</b> (see also <a href="http://trac.osgeo.org/grass/wiki/Release/6.4.0-News">technical announcement</a>)
</li></ul>
<hr>
<a href="http://grass.osgeo.org/announces/abstract_grass640.txt">Short version</a>
<hr>
<address>
<a href="http://grass.osgeo.org/community/team.php">GRASS Development Team</a></address></td></tr></tbody></table>