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#! /usr/bin/perl
#makes things work when run without install
use lib qw( /usr/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",
"DS:b: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($t/3000)*50+50).":".(sin($t/2500)*50+50);
if ($ERROR = RRDs::error) {
die "$0: unable to update `$rrd': $ERROR\n";
}
}
my $c1="f57912a0";
my $c2="2a79e9a0";
my $w=300;
my $h=140;
RRDs::graph "$name-L.png",
"--title", "2 LINES",
"--start", "now",
"--end", "start+15h",
"--lower-limit=0",
"--interlaced",
"--imgformat","PNG",
"--width=$w",
"--height=$h",
"DEF:a=$rrd:a:AVERAGE",
"DEF:b=$rrd:b:AVERAGE",
"LINE1:a#$c1:Value A",
"LINE3:b#$c2:Value B",
;
RRDs::graph "$name-A.png",
"--title", "LINE and AREA",
"--start", "now",
"--end", "start+15h",
"--lower-limit=0",
"--interlaced",
"--imgformat","PNG",
"--width=$w",
"--height=$h",
"DEF:a=$rrd:a:AVERAGE",
"DEF:b=$rrd:b:AVERAGE",
"AREA:a#$c1:Value A",
"LINE2:b#$c2:Value B",
;
RRDs::graph "$name-S.png",
"--title", "STACKED AREAS",
"--start", "now",
"--end", "start+15h",
"--lower-limit=0",
"--interlaced",
"--imgformat","PNG",
"--width=$w",
"--height=$h",
"DEF:a=$rrd:a:AVERAGE",
"DEF:b=$rrd:b:AVERAGE",
"AREA:a#$c1:Value A",
"STACK:b#$c2:Value B",
;
RRDs::graph "$name-M.png",
"--title", "RPN Magic",
"--start", "now",
"--end", "start+15h",
"--lower-limit=0",
"--interlaced",
"--imgformat","PNG",
"--width=$w",
"--height=$h",
"DEF:a=$rrd:a:AVERAGE",
"DEF:b=$rrd:b:AVERAGE",
"CDEF:alpha=TIME,3600,%,1800,LT,a,UNKN,IF",
"CDEF:beta=TIME,3600,%,1800,GE,b,UNKN,IF",
"AREA:alpha#$c1:Value A",
"LINE1:a#$c1",
"AREA:beta#$c2:Value B",
"LINE1:b#$c2",
;
RRDs::graph "$name-sample.png",
"--title", "Sample",
"--start", "now",
"--end", "start+15h",
"--lower-limit=0",
"--interlaced",
"--imgformat","PNG",
"--width=600",
"--height=50",
"DEF:a=$rrd:a:AVERAGE",
"DEF:b=$rrd:a:MAX",
"AREA:a#00ff00:Incoming",
"LINE1:b#ff0000:Max Incoming",
;
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 the TIME and % RPN operators\n";
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