examples/4charts.pl.in

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