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<html>
<head>
<title>PROJ.4 - Cartographic Projections Library</title>
</head>
<body BGCOLOR="#FFFFFF">
<h1>PROJ.4 - Cartographic Projections Library</h1>
This web page relates to the PROJ.4 Cartographic Projections library originally
written by Gerald Evenden then of the USGS. The primary version of this
web page can be found at <a href="http://www.remotesensing.org/proj">
http://www.remotesensing.org/proj</a>.<p>
<!---------------------------------------------------------------------------->
<h2>Download</h2>
The current development source is available by anonymous CVS. It can
be checked out as the "proj" component. Review the
<a href="http://www.remotesensing.org/docs/howto-cvs.php3">OSRS CVS HOWTO</a>
if you need more information on using OSRS anonymous CVS.<p>
The following files are available from the
<a href="ftp://ftp.remotesensing.org/pub/proj">proj ftp directory</a>:<p>
<ul>
<li> <a href="ftp://ftp.remotesensing.org/pub/proj/proj-4.4.4.tar.gz">
proj-4.4.4.tar.gz</a> or
<a href="ftp://ftp.remotesensing.org/pub/proj/proj-4.4.4.zip">proj-4.4.4.zip
</a>: Current source release.<p>
<li>
<a href="ftp://ftp.remotesensing.org/pub/proj/proj-nad27-1.1.tar.gz">
proj-nad27-1.1.tar.gz</a>:
US and Canadian datum shift grids - untar in the nad directory before
configuring to add NAD27/NAD83 datum conversion.<p>
<li>
<a href="ftp://ftp.remotesensing.org/pub/proj/PROJ.4-4.4.1-1.i586.rpm">
PROJ.4-4.4.1-1.i586.rpm</a>: Binary distribution for Intel Linux (glibc 2.1).<p>
<li>
<a href="http://packages.debian.org/unstable/science/proj.html">
PROJ.4 in a Debian Package</a>.<p>
<li> <a href="ftp://ftp.remotesensing.org/pub/proj/from_kai/PROJ.4.3.3.tar.gz">PROJ.4.3.3.tar.gz</a>:
The last PROJ 4.3 release produced by Gerald Evenden (classic PROJ.4).<p>
<li> <a href="ftp://ftp.remotesensing.org/pub/proj/from_kai/">from_kai</a>:
A snapshot of everything on the kai.er.usgs.gov/pub/PROJ.4 directory as
of March/2000.<p>
<li> <a href="ftp://ftp.remotesensing.org/pub/proj/OF90-284.pdf">
OF90-284.pdf (2.7MB)</a>: The main users manual for PROJ; however, this dates
from PROJ.3 - the addendums
<a href="ftp://ftp.remotesensing.org/pub/proj/PROJ.4.3.pdf">PROJ.4.3.pdf (9.7MB)</a>,
<a href="ftp://ftp.remotesensing.org/pub/proj/PROJ.4.3.I2.pdf">PROJ.4.3.I2.pdf (2MB)</a>,
and
<a href="ftp://ftp.remotesensing.org/pub/proj/SWISS.pdf">SWISS.pdf (78KB)</a>
contain important additional information.<p>
<li> <a href="man_proj.html">proj</a> command manpage
</ul>
<!---------------------------------------------------------------------------->
<h2>Mailing List and Bugs</h2>
<p>
This mailing list is for development and user discussions of the PROJ.4
library.
<p>
To <b>subscribe</b> send mail to <a href="mailto:majordomo@remotesensing.org">
majordomo@remotesensing.org</a>, with no subject. In the body type:
<p>
<tt>subscribe osrs-proj</tt>
<p>
To <b>unsubscribe</b> send mail to <a href="mailto:majordomo@remotesensing.org">
majordomo@remotesensing.org</a>, with no subject, and in the body type:
<p>
<tt>unsubscribe osrs-proj</tt>
<p>
To post an email to this list, send email to:
<a href="mailto:osrs-proj@remotesensing.org">osrs-proj@remotesensing.org</a>.
To review previous posts visit the
<a href="http://www.remotesensing.org/lists/proj_archive/maillist.html">
web archive</a>.<p>
Bugs <a href="http://bugzilla.remotesensing.org/enter_bug.cgi?product=PROJ.4">
can be entered</a> and
<a href="http://bugzilla.remotesensing.org/buglist.cgi?product=PROJ.4">can
be viewed</a> in BugZilla.<p>
<!---------------------------------------------------------------------------->
<h2>Plans</h2>
PROJ.4 is in active use by
<a href="http://hgeo02.geog.uni-hannover.de/grass/">GRASS</a>,
<a href="http://mapserver.gis.umn.edu/">MapServer</a>,
<a href="http://ogdi.sourceforge.net/">OGDI</a> and
<a href="http://gdal.velocet.ca/projects/opengis/ogrhtml/osr_tutorial.html">
OGRCoordinateTransformation</a> as well as various other projects (please
let me know about other projects using PROJ.4!).<p>
Since work started on the PROJ.4.4.x series of releases, various bux fixes
have been incorporated, and the build system has been overhauled to use
autoconf/libtool. Support has also been added for 3 and 7 parameter datum
shifts, the <b>PJ*</b> structure now also carries datum information and
<b>PJ*</b> can be considered a full coordinate system (geographic coordinate
systems are also now supported with the <b>+proj=latlong</b>
pseudo-projection). The new <b>cs2cs</b> program performs a similar function
to the <b>proj</b> program, but transforming from any one coordinate system
to another. The new <b>pj_transform()</b> is used to access the extended
coordinate system to coordinate system transformation with datum shifting.
A mapping file (<b>epsg</b>) has also been introduced mapping most EPSG (
<a href="http://www.epsg.org">www.epsg.org</a>) coordinate systems to
PROJ.4 format.<p>
Future plans for PROJ.4 will hopefully include better online documentation,
refinement of datum shifting support, splitting of projects.h into public
and private components and extension of the external programming API
for greater convenience in handling coordinate systems from applications.<p>
If you are a user of PROJ.4, and/or are interested in contributing please
drop me a line and join the mailing list. <p>
<!---------------------------------------------------------------------------->
<h2>License</h2>
PROJ.4 has been placed under an MIT license. I believe this to
be as close as possible to public domain while satisfying those who say that
a copyright notice is required in some countries. The COPYING file read as
follows:<p>
All source, data files and other contents of the PROJ.4 package are
available under the following terms. Note that the PROJ 4.3 and earlier
was "public domain" as is common with US government work, but apparently
this is not a well defined legal term in many countries. I am placing
everything under the following MIT style license because I believe it is
effectively the same as public domain, allowing anyone to use the code as
they wish, including making proprietary derivatives. <p>
Though I have put my own name as copyright holder, I don't mean to imply
I did the work. Essentially all work was done by Gerald Evenden. <p>
<pre>
--------------
Copyright (c) 2000, Frank Warmerdam
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
</pre>
<!---------------------------------------------------------------------------->
<h2>Related Resources</h2>
<ul>
<li> <a href="http://www.remotesensing.org/geotiff/proj_list/">GeoTIFF
Projections List</a> which includes relationship of many projections to
EPSG, PROJ.4, and OGC standards. <p>
<li> <a href="http://imina.soest.hawaii.edu/gmt/">GMT</a> - Generic
Mapping Tools, includes reprojection services.<p>
<li> <a href="http://users.netonecom.net/~rburtch/geodesy/datums.html">
Coordinates, Datums and Transformations</a>: An assortment of links and
information.<p>
<li> <a href="http://edc.usgs.gov/pub/software/gctpc/">GCTPC</a>: The
other widely used projection package from te USGS.<p>
<li> <a href="http://www.remotesensing.org/docs/geotrans.php3">Geotrans</a>:
a projections and datum shift program from NIMA. Available from OSRS
CVS as osrs/geotrans.<p>
<li> <a href="http://www.geocities.com/CapeCanaveral/1224/mapref.html">MapRef</a>: Assorted general information on projections, and related topics.<p>
</ul>
</body>
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