Interface between GRASS geographical information system and R

Interface between GRASS geographical information system and R, based on
starting R from within the GRASS environment and chosen LOCATION_NAME
and MAPSET. Wrapper and helper functions are provided for a range of R
functions to match the interface metadata structures.

This file is intended to clarify ownership and copyright: where
possible individual files also carry brief copyright notices. 

Copyrights
==========

File: kde2d.G.R contains modified versions of the kde2d() and
bandwidth.nrd() functions in the MASS library, copyright 1994-9
W.N.Venables & B.D.Ripley.

File: krige.G.R contains a modified version of the prmat() in the spatial
library, copyright 1994-9 W.N.Venables & B.D.Ripley.

File: pcbs.txt contains data distributed with: Bailey, T. C., Gatrell,
A. C. 1995 Interactive Spatial Data Analysis (Longman, Harlow), and is
included here by permission of the authors.

File: utm.maas.rda contains data from: Burrough, P. & McDonnell,
R. (1998) Principles of geographical information systems, New York:
Oxford, pp. 309--311, also distributed with Gstat (http://www.gstat.org),
and originally taken from: Rikken, M.G.J., Van Rijn, R.P.G., 1993. Soil
pollution with heavy metals -- An Inquiry into Spatial Variation,
Cost of Mapping and the Risk evaluation of Copper, Cadmium, Lead and
Zinc in the Floodplains of the Meuse West of Stein, The Netherlands.
Doctoraalveldwerkverslag, Dept. of Physical Geography, Utrecht University.


Files: src/gmeta.access.c, src/gmeta.c, src/include/grassR.h,
src/rasteri.c, src/rastget.c, src/rastput.c, src/R_G_init.c,
src/sitesget.c, src/sitesput.c, are copyright (c) 1998-2002 Roger
S. Bivand and are subject to the licence at the foot of this file.

The remaining files in src and src/include are copyright (c) various
dates by the GRASS Development Team and are free software under
the GNU General Public License (>=v2). Read the file COPYING that
comes with GRASS for details; exceptions are the files from the R
source distribution: src/include/zlib.h and src/include/zconf.h,
which are Copyright (C) 1995-2002 Jean-loup Gailly and Mark Adler,
file src/include/psignal.h, which is Copyright 1994-1999 The Downhill
Project, and files src/include/rpc/*.h, which are Copyright (C) 1984,
Sun Microsystems, Inc., and are as modified: RPC for the Windows NT
Operating System 1993 by Martin F. Gergeleit.


Licence
=======

    This is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.


The file COPYING in the R top-level directory is a copy of the "GNU
General Public License".

Roger.Bivand@nhh.no

