#!/usr/bin/perl
#

$JDBASE = 2461000;

my($output_file, $term_options);

###################################################################
# Make a graph showing differential magnitudes of stars
#   using star "A" = C2 as the reference
#   and giving it an instrumental magnitude of 9.00 for convenience
#
#  
  $output_file = "diff_mag_a.png";
  $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 ylabel 'Differential clear magnitude' \n";
  printf CMDFILE "set xlabel 'Julian Date - 2,461,000' \n";


  printf CMDFILE "set title 'WASP-149 field, 12-inch, UT 2026 Mar 10'\n";
  
  $cmd = "plot [][11.6:11] 'photometry_pruned.dat' using ";
  $cmd .=  "  (\$5-$JDBASE):(9.0-2.5*log10(\$40/\$58))   ls 2 pt 3 t 'WASP' ";
  $cmd .=  " , ";
  $cmd .= "              'photometry_pruned.dat' using ";
  $cmd .=  "  (\$5-$JDBASE):(9.0-2.5*log10(\$58/\$58))   ls 1 pt 1 t 'A' ";
  $cmd .=  " , ";
  $cmd .= "              'photometry_pruned.dat' using ";
  $cmd .=  "  (\$5-$JDBASE):(9.0-2.5*log10(\$74/\$58))   ls 3 pt 4 t 'B' ";
  $cmd .=  " , ";
  $cmd .= "              'photometry_pruned.dat' using ";
  $cmd .=  "  (\$5-$JDBASE):(9.0-2.5*log10(\$90/\$58))   ls 4 pt 5 t 'C' ";
  $cmd .=  " , ";
  $cmd .= "              'photometry_pruned.dat' using ";
  $cmd .=  "  (\$5-$JDBASE):(9.0-2.5*log10(\$106/\$58))   ls 5 pt 6 t 'D' ";

  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;