# ex_spectrum_biref.ppl
#
# The code in this file is part of Pyxplot
# <http://www.pyxplot.org.uk>
#
# Copyright (C) 2006-2012 Dominic Ford <coders@pyxplot.org.uk>
#               2008-2012 Ross Church
#
# $Id: ex_spectrum_biref.ppl 1261 2012-07-11 21:38:05Z dcf21 $
#
# Pyxplot 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.
#
# You should have received a copy of the GNU General Public License along with
# Pyxplot; if not, write to the Free Software Foundation, Inc., 51 Franklin
# Street, Fifth Floor, Boston, MA  02110-1301, USA

# ----------------------------------------------------------------------------

# This script produces a figure for the Pyxplot Users' Guide

# Call common initialisation script
reset
title = "ex_spectrum_biref"
load "examples/fig_init.ppl"

# BEGIN
set nokey
set nocolkey
set size ratio 0.2
set noytics
set noylabel
spec(wl) = cos(2*pi*c1 / wl) * 1.25
set unit of length nm
set xlabel 'Optical path difference'
set colmap colors.spectrum(spec,1)
set sample grid 400x2
set c1range norenorm
set title 'Colors of a wedge of stressed plastic between crossed polars'
plot [unit(0*m):unit(2e-6*m)][0:1] x with colormap
# END

# Call common cleanup script
load "examples/fig_end.ppl"

