The easiest way would be the Tk Canvas. See Tk compass dial for a simple demo. Once you create your Canvas plot, you can print it to postscript, like this: 
#!/usr/bin/perl
use Tk;
#to change the background color, edit the ps file
#  0.000 0.000 0.000 setrgbcolor AdjustColor
#  fill

$width = 800;
$height = 500;
my $main = MainWindow->new();
my $canvas = $main->Canvas( -width=>$width, -height=>$height, -backgro
+und=>"black");
$canvas->pack( -expand=>1,-fill=>'both');

&create;

$canvas->update;
$main->update;

$main->Button(
    -text    => "Save",
    -command => [sub {
         $canvas->update;
         my @capture=();
         my ($x0,$y0,$x1,$y1)=$canvas->bbox('all');
         @capture=('-x'=>$x0,'-y'=>$y0,-height=>$y1-$y0,-width=>$x1-$x
+0);
         $canvas -> postscript(-colormode=>'color',
                               -file=>$0.'.ps',
                   -rotate=>0,
                   -width=>800,
                   -height=>500,    
                   @capture);
                               
                  } 
   
  ]  )->pack;
 

MainLoop;

sub create{
$canvas->createOval(100, 100, 600, 600,-fill=>'green')

}

[download]
I'm not really a human, but I play one on earth. Cogito ergo sum a bum

In reply to Re: Plotting a tract of land by zentara
in thread Plotting a tract of land by blhoward2

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