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 $name =~ s/\.pl.*//g;
  12
  13 RRDs::create ($rrd, "--start",$start-1, "--step",300,
  14               "DS:a:GAUGE:600:U:U",
  15               "DS:b:GAUGE:600:U:U",
  16               "RRA:AVERAGE:0.5:1:300",
  17               "RRA:MIN:0.5:12:300",
  18               "RRA:MAX:0.5:12:300",
  19 );
  20
  21 my $ERROR = RRDs::error;
  22 die "$0: unable to create `$rrd': $ERROR\n" if $ERROR;
  23
  24 # dropt some data into the rrd
  25 my $t;
  26 for ($t=$start; $t<$start+300*300; $t+=300){
  27   RRDs::update $rrd, "$t:".(sin($t/3000)*50+50).":".(sin($t/2500)*50+50);
  28   if ($ERROR = RRDs::error) {
  29     die "$0: unable to update `$rrd': $ERROR\n";
  30   }
  31 }
  32
  33 my $c1="f57912a0";
  34 my $c2="2a79e9a0";
  35 my $w=300;
  36 my $h=140;
  37
  38 RRDs::graph "$name-L.png",
  39   "--title", "2 LINES",
  40   "--start", "now",
  41   "--end", "start+15h",
  42   "--lower-limit=0",
  43   "--interlace",
  44   "--imgformat","PNG",
  45   "--width=$w",
  46   "--height=$h",
  47   "DEF:a=$rrd:a:AVERAGE",
  48   "DEF:b=$rrd:b:AVERAGE",
  49   "LINE1:a#$c1:Value A",
  50   "LINE3:b#$c2:Value B",
  51 ;
  52
  53 RRDs::graph "$name-A.png",
  54   "--title", "LINE and AREA",
  55   "--start", "now",
  56   "--end", "start+15h",
  57   "--lower-limit=0",
  58   "--interlace",
  59   "--imgformat","PNG",
  60   "--width=$w",
  61   "--height=$h",
  62   "DEF:a=$rrd:a:AVERAGE",
  63   "DEF:b=$rrd:b:AVERAGE",
  64   "AREA:a#$c1:Value A",
  65   "LINE2:b#$c2:Value B",
  66 ;
  67
  68 RRDs::graph "$name-S.png",
  69   "--title", "STACKED AREAS",
  70   "--start", "now",
  71   "--end", "start+15h",
  72   "--lower-limit=0",
  73   "--interlace",
  74   "--imgformat","PNG",
  75   "--width=$w",
  76   "--height=$h",
  77   "DEF:a=$rrd:a:AVERAGE",
  78   "DEF:b=$rrd:b:AVERAGE",
  79   "AREA:a#$c1:Value A",
  80   "STACK:b#$c2:Value B",
  81 ;
  82
  83
  84 RRDs::graph "$name-M.png",
  85   "--title", "RPN Magic",
  86   "--start", "now",
  87   "--end", "start+15h",
  88   "--lower-limit=0",
  89   "--interlace",
  90   "--imgformat","PNG",
  91   "--width=$w",
  92   "--height=$h",
  93   "DEF:a=$rrd:a:AVERAGE",
  94   "DEF:b=$rrd:b:AVERAGE",
  95   "CDEF:alpha=TIME,3600,%,1800,LT,a,UNKN,IF",
  96   "CDEF:beta=TIME,3600,%,1800,GE,b,UNKN,IF",
  97   "AREA:alpha#$c1:Value A",
  98   "LINE1:a#$c1",
  99   "AREA:beta#$c2:Value B",
 100   "LINE1:b#$c2",
 101 ;
 102
 103 RRDs::graph "$name-sample.png",
 104   "--title", "Sample",
 105   "--start", "now",
 106   "--end", "start+15h",
 107   "--lower-limit=0",
 108   "--interlace",
 109   "--imgformat","PNG",
 110   "--width=600",
 111   "--height=50",
 112   "DEF:a=$rrd:a:AVERAGE",
 113   "DEF:b=$rrd:a:MAX",
 114   "AREA:a#00ff00:Incoming",
 115   "LINE1:b#ff0000:Max Incoming",
 116 ;
 117
 118 if ($ERROR = RRDs::error) {
 119   print "ERROR: $ERROR\n";
 120 };
 121
 122 print "This script has created $name.png in the current directory\n";
 123 print "This demonstrates the use of the TIME and % RPN operators\n";