Add a useful package (from Source forge) for octave

[CreaPhase.git] / octave_packages / mapping-1.0.7 / km2deg.m

diff --git a/octave_packages/mapping-1.0.7/km2deg.m b/octave_packages/mapping-1.0.7/km2deg.m
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+## Copyright (C) 2008 Alexander Barth <barth.alexander@gmail.com>
+##
+## This program 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+## -*- texinfo -*-
+## @deftypefn {Function File} @var{a} = km2deg(@var{x})
+## Convert a distance along a great circle of the Earth from km to degrees. A radius
+## of 6371 km is assumed.
+## @end deftypefn
+
+## Author: Alexander Barth <barth.alexander@gmail.com>
+
+function a = km2deg(x)
+
+Re = 6371;
+
+a = 180 * x/(pi*Re);
+
+endfunction
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