From rredc@nrel.gov Wed Mar 21 18:37:25 2001 Return-Path: Received: from mgate.uni-hannover.de by hgeo02.geog.uni-hannover.de (SMI-8.6/SMI-SVR4) id SAA04041; Wed, 21 Mar 2001 18:37:25 GMT Received: from nrel.nrel.gov by mgate.uni-hannover.de (PP) with ESMTP; Wed, 21 Mar 2001 18:59:10 +0100 Received: from kepler.nrel.gov (kepler.nrel.gov [192.48.125.108]) by nrel.nrel.gov (8.9.3/8.9.3) with ESMTP id KAA16411 for ; Wed, 21 Mar 2001 10:59:07 -0700 (MST) Received: from [192.174.39.30] (manderb3 [192.174.39.30]) by kepler.nrel.gov (8.9.3+Sun/8.9.1) with ESMTP id KAA19259 for ; Wed, 21 Mar 2001 10:53:46 -0700 (MST) Mime-Version: 1.0 X-Sender: rredc@nrel.nrel.gov Message-Id: In-Reply-To: <20010321171024.A2714@hgeo02.geog.uni-hannover.de> References: <20010321155343.A1764@hgeo02.geog.uni-hannover.de> <20010321171024.A2714@hgeo02.geog.uni-hannover.de> Date: Wed, 21 Mar 2001 11:03:36 -0700 To: Markus Neteler From: RReDC Subject: Re: May I use solpos.c? Content-Type: text/plain; charset="us-ascii" ; format="flowed" Status: RO X-Status: A Content-Length: 2720 Lines: 83 Dear Mr. Neteler, I have the OK you need, but you might want to wait a few days. I am working to get the latest version, SOLPOS 2.0, online. In SOLPOS 2.0 the code has been converted to structures and subdivided into functions. Also a small error in the calculation of the declination angle has been corrected. Sincerely, Mary Anderberg >Dear Mrs. Anderberg, > >On Wed, Mar 21, 2001 at 08:45:22AM -0700, RReDC wrote: > > Dear Mr. Neteler, > > > > I apologize! I thought I had forwarded your email to my task leader > > for his OK, but apparently I haven't yet. I don't foresee any > > problems with your request, but want to be sure. We will probably > > simply ask the NREL get credit for solpos. > >this sounds very promising! If course credit is given to NREL >as we always give credits to the authors. It would be stated >in the file itself, the related manual pages and announced in >the releated GRASS news channels. > >Looking forward your answer, > > Markus Neteler > >-- >Markus Neteler * University of Hannover >Institute of Physical Geography and Landscape Ecology >Schneiderberg 50 * D-30167 Hannover * Germany >Tel: ++49-(0)511-762-4494 Fax: -3984 > > > >Ladies and Gentlemen, > > > > > >by browsing the web for a relyable solar position calculator > > >I have found your solpos.c: > > >http://rredc.nrel.gov/solar/codes_algs/solpos/ > > > > > >I would like to get permission from you to include this > > >code into a free Geographical Information System (GRASS: > > >http://www.geog.uni-hannover.de/grass/ > > >published under GNU GPL) for the use for various modules. > > > > > >GRASS offers beside other modules a surface energy calculation > > >tool, satellite image correction etc. which all need a good > > >algorithm to calculate the sun position. > > > > > >The algorithm currently in use is not very accurate. > > > > > >I would kindly request you to permit the including of > > >solpos.c/h (written by Martin Rymes) into GRASS GIS. > > >Of course the author statements keep included according to > > >GNU General Public License: http://www.gnu.org/copyleft/gpl.html > > > > > >Thanks in advance, > > > > > > Markus Neteler > > > GRASS Development Team > > > > > >-- > > >Markus Neteler * University of Hannover > > >Institute of Physical Geography and Landscape Ecology > > >Schneiderberg 50 * D-30167 Hannover * Germany > > >Tel: ++49-(0)511-762-4494 Fax: -3984 > > > > rredc@nrel.gov > > http://rredc.nrel.gov > > > > National Renewable Energy Laboratory > > 1617 Cole Boulevard > > Golden, Colorado, USA 80401 rredc@nrel.gov http://rredc.nrel.gov National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado, USA 80401 ------------------------------------------------------------------------- http://rredc.nrel.gov/solar/codes_algs/solpos/ SOLPOS.C Distributed by the National Renewable Energy Laboratory Center for Renewable Energy Resources Renewable Resource Data Center February 2000 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes an legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial produce, process or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation or favoring by the United States government or any agency thereof. The view and opinions of authors expressed herein do not necessarily state or reflect those of the United States government or any agency thereof.