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km2deg.m

## 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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