<%args>
$field_id
$imgtype => 'png'
$show_known => 0
</%args>

<%init>
my $model = $m->notes('MODEL');
my %typemap = (
    epsc => 'application/postscript',
    eps => 'application/postscript',
    png => 'image/png',
);

die "bogus image type: $imgtype" unless exists($typemap{$imgtype});
$r->content_type($typemap{$imgtype});

my $title = "Tracklets vs. Known Objects, Field ID $field_id";
my $show_known_str = $show_known ? '--mpcheck' : '';
my $cmd = qq{obsTool --instance $model --plot $show_known_str --tracklets --$imgtype --title "$title" $field_id};
my $stuff = join '', `$cmd`;
$m->clear_buffer;
$m->print($stuff);
$m->abort;
</%init>
