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# ex_fitting.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_fitting.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_fitting"
load "examples/fig_init.ppl"
# BEGIN
f(x) = a1*sin(x) + a3*sin(3*x) + a5*sin(5*x)
fit f() withouterrors 'examples/ex_fitting.dat' via a1, a3, a5
set xlabel '$x$' ; set ylabel '$y$'
plot [-3.5:3.5] 'examples/ex_fitting.dat' title 'Data' \
with points pointsize 2, \
f(x) title 'Fitted function' w lines
# END
# Call common cleanup script
load "examples/fig_end.ppl"
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