examples/4charts.pl.in

   1 #! @PERL@
   2
   3 #makes things work when run without install
   4 use lib qw( @prefix@/lib/perl );
   5
   6 use RRDs;
   7
   8 my $start=time;
   9 my $rrd="randome.rrd";
  10 my $name = $0;
  11 $name =~ s/.*\///g;
  12 $name =~ s/\.pl.*//g;
  13
  14 RRDs::create ($rrd, "--start",$start-1, "--step",300,
  15               "DS:a:GAUGE:600:U:U",
  16               "DS:b:GAUGE:600:U:U",
  17               "RRA:AVERAGE:0.5:1:300",
  18               "RRA:MIN:0.5:12:300",
  19               "RRA:MAX:0.5:12:300",
  20 );
  21
  22 my $ERROR = RRDs::error;
  23 die "$0: unable to create `$rrd': $ERROR\n" if $ERROR;
  24
  25 # dropt some data into the rrd
  26 my $t;
  27 for ($t=$start; $t<$start+300*300; $t+=300){
  28   RRDs::update $rrd, "$t:".(sin($t/3000)*50+50).":".(sin($t/2500)*50+50);
  29   if ($ERROR = RRDs::error) {
  30     die "$0: unable to update `$rrd': $ERROR\n";
  31   }
  32 }
  33
  34 my $c1="f57912a0";
  35 my $c2="2a79e9a0";
  36 my $w=300;
  37 my $h=140;
  38
  39 RRDs::graph "$name-L.png",
  40   "--title", "2 LINES",
  41   "--start", "now",
  42   "--end", "start+15h",
  43   "--lower-limit=0",
  44   "--interlace",
  45   "--imgformat","PNG",
  46   "--width=$w",
  47   "--height=$h",
  48   "DEF:a=$rrd:a:AVERAGE",
  49   "DEF:b=$rrd:b:AVERAGE",
  50   "LINE1:a#$c1:Value A",
  51   "LINE3:b#$c2:Value B",
  52 ;
  53
  54 RRDs::graph "$name-A.png",
  55   "--title", "LINE and AREA",
  56   "--start", "now",
  57   "--end", "start+15h",
  58   "--lower-limit=0",
  59   "--interlace",
  60   "--imgformat","PNG",
  61   "--width=$w",
  62   "--height=$h",
  63   "DEF:a=$rrd:a:AVERAGE",
  64   "DEF:b=$rrd:b:AVERAGE",
  65   "AREA:a#$c1:Value A",
  66   "LINE2:b#$c2:Value B",
  67 ;
  68
  69 RRDs::graph "$name-S.png",
  70   "--title", "STACKED AREAS",
  71   "--start", "now",
  72   "--end", "start+15h",
  73   "--lower-limit=0",
  74   "--interlace",
  75   "--imgformat","PNG",
  76   "--width=$w",
  77   "--height=$h",
  78   "DEF:a=$rrd:a:AVERAGE",
  79   "DEF:b=$rrd:b:AVERAGE",
  80   "AREA:a#$c1:Value A",
  81   "STACK:b#$c2:Value B",
  82 ;
  83
  84
  85 RRDs::graph "$name-M.png",
  86   "--title", "RPN Magic",
  87   "--start", "now",
  88   "--end", "start+15h",
  89   "--lower-limit=0",
  90   "--interlace",
  91   "--imgformat","PNG",
  92   "--width=$w",
  93   "--height=$h",
  94   "DEF:a=$rrd:a:AVERAGE",
  95   "DEF:b=$rrd:b:AVERAGE",
  96   "CDEF:alpha=TIME,3600,%,1800,LT,a,UNKN,IF",
  97   "CDEF:beta=TIME,3600,%,1800,GE,b,UNKN,IF",
  98   "AREA:alpha#$c1:Value A",
  99   "LINE1:a#$c1",
 100   "AREA:beta#$c2:Value B",
 101   "LINE1:b#$c2",
 102 ;
 103
 104 RRDs::graph "$name-sample.png",
 105   "--title", "Sample",
 106   "--start", "now",
 107   "--end", "start+15h",
 108   "--lower-limit=0",
 109   "--interlace",
 110   "--imgformat","PNG",
 111   "--width=600",
 112   "--height=50",
 113   "DEF:a=$rrd:a:AVERAGE",
 114   "DEF:b=$rrd:a:MAX",
 115   "AREA:a#00ff00:Incoming",
 116   "LINE1:b#ff0000:Max Incoming",
 117 ;
 118
 119 if ($ERROR = RRDs::error) {
 120   print "ERROR: $ERROR\n";
 121 };
 122
 123 print "This script has created $name.png in the current directory\n";
 124 print "This demonstrates the use of the TIME and % RPN operators\n";