#!/usr/bin/perl
#
#

##########################################
#  plot a simple function over a single period
  
  my($output_file, $term_options);

  # get the arguments
  $output_file = "sine_ex_a.ps";
  $term_options = "postscript color enhanced 'Helvetica,18' ";

  $cmdfile = "gnuplot.in";
  
  open (CMDFILE, ">$cmdfile") || die("can't open $cmdfile for writing");
  printf CMDFILE "set output '$output_file' \n";
  printf CMDFILE "set term $term_options \n";

  # revert to some oldish default colors
  printf CMDFILE "set style line 1 lt rgb 'red' lw 3  \n";
  printf CMDFILE "set style line 2 lt rgb 'sea-green' lw 3  \n";
  printf CMDFILE "set style line 3 lt rgb 'blue' lw 3  \n";
  printf CMDFILE "set style line 4 lt rgb 'cyan' lw 3  \n";
  printf CMDFILE "set style line 5 lt rgb 'violet' lw 3  \n";


  printf CMDFILE "set grid \n";
  printf CMDFILE "set key top right \n";
#  printf CMDFILE "set xzeroaxis  lw 3.5 \n";
#  printf CMDFILE "set yzeroaxis  lw 3.5 \n";
  printf CMDFILE "set ylabel 'Value  '  \n";
  printf CMDFILE "set xlabel 'Time (s)' \n";
  printf CMDFILE "set title 'f(t) = 3 + sin(2 {/Symbol p} t / 5) ' \n";
#  printf CMDFILE "set label  '{/Symbol w_0} ' at 8.8,-0.5 \n";

  $cmd = "plot [0:5][-1.5:5] './test_four_a.out' index 0 using 2:4 ";
  $cmd .= "        with lines ls 1 lw 6 t '' ";
#  $cmd .= " , ";
#  $cmd .= "                        './test_four.out' index 0 using 2:10 ";
#  $cmd .= "        with lines ls -1 lw 3 t 'sin({/Symbol w_1})' ";

  printf CMDFILE "$cmd \n";


  printf CMDFILE "set output \n";
  printf CMDFILE "quit \n";
  close(CMDFILE) ;
  
  $retval = `gnuplot < $cmdfile`;
  printf "retval is ..%s..\n", $retval;
  
  if ($term_options =~ /postscript/) {
    $psfile = $output_file;
    $giffile = $psfile;
    $giffile =~ s/.ps/.png/;
    $cmd = "convert -rotate 90 $psfile $giffile";
    printf "cmd is ..$cmd.. \n";
    $ret = `$cmd`;
  }



##########################################
#  plot a simple function over a single period
#     plus the n=0 terms
  
  my($output_file, $term_options);

  # get the arguments
  $output_file = "sine_ex_b.ps";
  $term_options = "postscript color enhanced 'Helvetica,18' ";

  $cmdfile = "gnuplot.in";
  
  open (CMDFILE, ">$cmdfile") || die("can't open $cmdfile for writing");
  printf CMDFILE "set output '$output_file' \n";
  printf CMDFILE "set term $term_options \n";

  # revert to some oldish default colors
  printf CMDFILE "set style line 1 lt rgb 'red' lw 3  \n";
  printf CMDFILE "set style line 2 lt rgb 'sea-green' lw 3  \n";
  printf CMDFILE "set style line 3 lt rgb 'blue' lw 3  \n";
  printf CMDFILE "set style line 4 lt rgb 'cyan' lw 3  \n";
  printf CMDFILE "set style line 5 lt rgb 'violet' lw 3  \n";


  printf CMDFILE "set grid \n";
  printf CMDFILE "set key top right \n";
#  printf CMDFILE "set xzeroaxis  lw 3.5 \n";
#  printf CMDFILE "set yzeroaxis  lw 3.5 \n";
  printf CMDFILE "set ylabel 'Value  '  \n";
  printf CMDFILE "set xlabel 'Time (s)' \n";
  printf CMDFILE "set title 'f(t) = 3 + sin(2 {/Symbol p} t / 5) ' \n";
#  printf CMDFILE "set label  '{/Symbol w_0} ' at 8.8,-0.5 \n";

  $cmd = "plot [0:5][-1.5:5] './test_four_a.out' index 0 using 2:4 ";
  $cmd .= "        with lines ls 1 lw 6 t '' ";
  $cmd .= " , ";
  $cmd .= "                        './test_four_a.out' index 0 using 2:7 ";
  $cmd .= "        with lines ls 2 lw 4 t 'A_0 term' ";

  printf CMDFILE "$cmd \n";


  printf CMDFILE "set output \n";
  printf CMDFILE "quit \n";
  close(CMDFILE) ;
  
  $retval = `gnuplot < $cmdfile`;
  printf "retval is ..%s..\n", $retval;
  
  if ($term_options =~ /postscript/) {
    $psfile = $output_file;
    $giffile = $psfile;
    $giffile =~ s/.ps/.png/;
    $cmd = "convert -rotate 90 $psfile $giffile";
    printf "cmd is ..$cmd.. \n";
    $ret = `$cmd`;
  }




##########################################
#  plot a simple function over a single period
#     plus the n=0, n=1 terms
  
  my($output_file, $term_options);

  # get the arguments
  $output_file = "sine_ex_c.ps";
  $term_options = "postscript color enhanced 'Helvetica,18' ";

  $cmdfile = "gnuplot.in";
  
  open (CMDFILE, ">$cmdfile") || die("can't open $cmdfile for writing");
  printf CMDFILE "set output '$output_file' \n";
  printf CMDFILE "set term $term_options \n";

  # revert to some oldish default colors
  printf CMDFILE "set style line 1 lt rgb 'red' lw 3  \n";
  printf CMDFILE "set style line 2 lt rgb 'sea-green' lw 3  \n";
  printf CMDFILE "set style line 3 lt rgb 'blue' lw 3  \n";
  printf CMDFILE "set style line 4 lt rgb 'cyan' lw 3  \n";
  printf CMDFILE "set style line 5 lt rgb 'violet' lw 3  \n";


  printf CMDFILE "set grid \n";
  printf CMDFILE "set key top right \n";
#  printf CMDFILE "set xzeroaxis  lw 3.5 \n";
#  printf CMDFILE "set yzeroaxis  lw 3.5 \n";
  printf CMDFILE "set ylabel 'Value  '  \n";
  printf CMDFILE "set xlabel 'Time (s)' \n";
  printf CMDFILE "set title 'f(t) = 3 + sin(2 {/Symbol p} t / 5) ' \n";
#  printf CMDFILE "set label  '{/Symbol w_0} ' at 8.8,-0.5 \n";

  $cmd = "plot [0:5][-1.5:5] './test_four_a.out' index 0 using 2:4 ";
  $cmd .= "        with lines ls 1 lw 6 t '' ";
  $cmd .= " , ";
  $cmd .= "                        './test_four_a.out' index 0 using 2:7 ";
  $cmd .= "        with lines ls 2 lw 4 t 'A_0 term' ";
  $cmd .= " , ";
  $cmd .= "                        './test_four_a.out' index 0 using 2:16 ";
  $cmd .= "        with lines ls 3 lw 3 t 'B_1 term' ";


  printf CMDFILE "$cmd \n";


  printf CMDFILE "set output \n";
  printf CMDFILE "quit \n";
  close(CMDFILE) ;
  
  $retval = `gnuplot < $cmdfile`;
  printf "retval is ..%s..\n", $retval;
  
  if ($term_options =~ /postscript/) {
    $psfile = $output_file;
    $giffile = $psfile;
    $giffile =~ s/.ps/.png/;
    $cmd = "convert -rotate 90 $psfile $giffile";
    printf "cmd is ..$cmd.. \n";
    $ret = `$cmd`;
  }




##########################################
#  plot a simple function over a single period
#     plus the n=0, n=1, and total terms
# 
  
  my($output_file, $term_options);

  # get the arguments
  $output_file = "sine_ex_d.ps";
  $term_options = "postscript color enhanced 'Helvetica,18' ";

  $cmdfile = "gnuplot.in";
  
  open (CMDFILE, ">$cmdfile") || die("can't open $cmdfile for writing");
  printf CMDFILE "set output '$output_file' \n";
  printf CMDFILE "set term $term_options \n";

  # revert to some oldish default colors
  printf CMDFILE "set style line 1 lt rgb 'red' lw 3  \n";
  printf CMDFILE "set style line 2 lt rgb 'sea-green' lw 3  \n";
  printf CMDFILE "set style line 3 lt rgb 'blue' lw 3  \n";
  printf CMDFILE "set style line 4 lt rgb 'cyan' lw 3  \n";
  printf CMDFILE "set style line 5 lt rgb 'violet' lw 3  \n";


  printf CMDFILE "set grid \n";
  printf CMDFILE "set key top right \n";
#  printf CMDFILE "set xzeroaxis  lw 3.5 \n";
#  printf CMDFILE "set yzeroaxis  lw 3.5 \n";
  printf CMDFILE "set ylabel 'Value  '  \n";
  printf CMDFILE "set xlabel 'Time (s)' \n";
  printf CMDFILE "set title 'f(t) = 3 + sin(2 {/Symbol p} t / 5) ' \n";
#  printf CMDFILE "set label  '{/Symbol w_0} ' at 8.8,-0.5 \n";

  $cmd = "plot [0:5][-1.5:5] './test_four_a.out' index 0 using 2:4 ";
  $cmd .= "        with lines ls 1 lw 6 t '' ";
  $cmd .= " , ";
  $cmd .= "                        './test_four_a.out' index 0 using 2:7 ";
  $cmd .= "        with lines ls 2 lw 4 t 'A_0 term' ";
  $cmd .= " , ";
  $cmd .= "                        './test_four_a.out' index 0 using 2:16 ";
  $cmd .= "        with lines ls 3 lw 3 t 'B_1 term' ";
  $cmd .= " , ";
  $cmd .= "                        './test_four_a.out' index 0 using 2:18 ";
  $cmd .= "        with points ls -1 lw 2 pt 6 ps 1.5 t 'sum' ";


  printf CMDFILE "$cmd \n";


  printf CMDFILE "set output \n";
  printf CMDFILE "quit \n";
  close(CMDFILE) ;
  
  $retval = `gnuplot < $cmdfile`;
  printf "retval is ..%s..\n", $retval;
  
  if ($term_options =~ /postscript/) {
    $psfile = $output_file;
    $giffile = $psfile;
    $giffile =~ s/.ps/.png/;
    $cmd = "convert -rotate 90 $psfile $giffile";
    printf "cmd is ..$cmd.. \n";
    $ret = `$cmd`;
  }










exit 0;
