examples/4charts.pl.in

   1 #! @PERL@
   2
   3 #makes things work when run without install
   4 use lib qw( ../libraries/perl-shared/blib/lib ../libraries/perl-shared/blib/arch );
   5 # this is for after install
   6 use lib qw( @prefix@/lib/perl ../lib/perl );
   7 use RRDs;
   8
   9 my $start=time;
  10 my $rrd="randome.rrd";
  11 my $name = $0;
  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 $c1="f57912";
  35 $c2="2a79e9";
  36 $w=300;
  37 $h=140;
  38 RRDs::graph "$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
 119
 120 print "ERROR: $ERROR\n" if $ERROR = RRDs::error;
 121
 122
 123
 124
 125 print "This script has created $name.png in the current directory\n";
 126 print "This demonstrates the use of the TIME and % RPN operators\n";