#! @PERL@ use lib qw( @prefix@/lib/perl ); use RRDs; my $start=time; my $rrd="randome.rrd"; my $name = $0; $name =~ s/.*\///g; $name =~ s/\.pl.*//g; RRDs::create ($rrd, "--start",$start-1, "--step",300, "DS:a:GAUGE:600:U:U", "RRA:AVERAGE:0.5:1:300", "RRA:MIN:0.5:12:300", "RRA:MAX:0.5:12:300", ); my $ERROR = RRDs::error; die "$0: unable to create `$rrd': $ERROR\n" if $ERROR; # dropt some data into the rrd my $t; for ($t=$start; $t<$start+300*300; $t+=300){ RRDs::update $rrd, "$t:".(sin($t/3000)*50+50); if ($ERROR = RRDs::error) { die "$0: unable to update `$rrd': $ERROR\n"; } } RRDs::graph "$name.png", "--title", uc($name)." Demo", "--start", "now", "--end", "start+1d", "--lower-limit=0", "--interlace", "--imgformat","PNG", "--width=450", "DEF:a=$rrd:a:AVERAGE", "DEF:b=$rrd:a:MIN", "DEF:c=$rrd:a:MAX", "AREA:a#00b6e4:real", "LINE1:b#0022e9:min", "LINE1:c#00ee22:max", ; if ($ERROR = RRDs::error) { die "ERROR: $ERROR\n"; }; print "This script has created $name.png in the current directory\n"; print "This demonstrates the use of MIN and MAX archives\n";