From octave-sources-request at bevo dot che dot wisc dot edu Mon Jan 27 14:07:10 2003
Subject: Octave routines for unit conversions. - deg2rad.m
From: Stefan Burger <s dot burger at debitel dot net>
To: octave-sources at bevo dot che dot wisc dot edu
Date: Mon, 27 Jan 2003 07:44:19 -0600


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Some more functions that I want to contribute.=20
I often use octave as sort of an engineers calculator,=20
and these routines have quite often served me well.=20

Could not find a suitable category for these files,=20
would suggest placing them into miscellaneous, or=20
create category units.

Files that will follow:
* Converting angles:
=09deg2rad =09(attached)
=09rad2deg
* Converting temperatures:
=09cels2fahr
=09cels2kelv
=09fahr2cels
=09fahr2kelv
=09kelv2fahr
=09kelv2cels
* Converting lenght=20
=09len2metric
=09metric2len
* Converting areas
=09area2metric
=09metric2area
* Converting volumes
=09vol2metric
=09metric2vol
* Converting weights
=09mass2kg
=09kg2mass
* Converting forces
=09lbf2N
=09N2lbf

Hoping that others will find them useful, too.=20

Best regards,=20

Stefan Burger.
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## Copyright (C) 2003 Stefan Burger
##
## This file is part of Octave.
##
## Octave 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, or (at your option) any
## later version.
##
## Octave 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 Octave; see the file COPYING.  If not, write to the Free
## Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA.

## -*- texinfo -*-
##  at deftypefn {Function File} {} deg2rad (@var{angle_d})
## Converts an anglular value in degrees  at var{angle_d} to an angular value
## in radians.
## Input can be scalar, vector or a matrix.
## Conversion is done elementwise on the input.
## The returned value is of the same size as the input.
##  at end deftypefn
##  at seealso{rad2deg}

## Author: Stefan Burger <Stefan dot Burger at stud dot tu-muenchen dot de>
## Description: converts angles degrees to radians.

function angle_r = deg2rad (angle_d)

  if (nargin != 1)
    usage("deg2rad (angle_d)");
  endif

  angle_r = angle_d * (pi/180);

endfunction

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