RRDGRAPH_EXAMPLES(1)                rrdtool               RRDGRAPH_EXAMPLES(1)



NAME
       rrdgraph_examples - Examples for rrdtool graph

SYNOPSIS
       rrdtool graph /home/httpd/html/test.png --img-format PNG

       followed by any of the examples below

DESCRIPTION
       For your convenience some of the commands are explained here by using
       detailed examples. They are not always cut-and-paste ready because
       comments are intermixed with the examples.

EXAMPLES
       Data with multiple resolutions

           --end now --start end-120000s --width 400
           DEF:ds0a=/home/rrdtool/data/router1.rrd:ds0:AVERAGE
           DEF:ds0b=/home/rrdtool/data/router1.rrd:ds0:AVERAGE:step=1800
           DEF:ds0c=/home/rrdtool/data/router1.rrd:ds0:AVERAGE:step=7200
           LINE1:ds0a#0000FF:"default resolution\l"
           LINE1:ds0b#00CCFF:"resolution 1800 seconds per interval\l"
           LINE1:ds0c#FF00FF:"resolution 7200 seconds per interval\l"

       Nicely formatted legend section

           DEF:ds0=/home/rrdtool/data/router1.rrd:ds0:AVERAGE
           DEF:ds1=/home/rrdtool/data/router1.rrd:ds1:AVERAGE
           VDEF:ds0max=ds0,MAXIMUM
           VDEF:ds0avg=ds0,AVERAGE
           VDEF:ds0min=ds0,MINIMUM
           VDEF:ds0pct=ds0,95,PERCENT
           VDEF:ds1max=ds1,MAXIMUM
           VDEF:ds1avg=ds1,AVERAGE
           VDEF:ds1min=ds1,MINIMUM
           VDEF:ds1pct=ds1,95,PERCENT

       Note: consolidation occurs here.

           CDEF:ds0bits=ds0,8,*
           CDEF:ds1bits=ds1,8,*

       Note: 10 spaces to move text to the right

           COMMENT:"          "

       Note: the column titles have to be as wide as the columns

           COMMENT:"Maximum    "
           COMMENT:"Average    "
           COMMENT:"Minimum    "

           COMMENT:"95th percentile\l"
           AREA:ds0bits#00C000:"Inbound "
           GPRINT:ds0max:"%6.2lf %Sbps"
           GPRINT:ds0avg:"%6.2lf %Sbps"
           GPRINT:ds0min:"%6.2lf %Sbps"
           GPRINT:ds0pct:"%6.2lf %Sbps\l"
           LINE1:ds1bits#0000FF:"Outbound"
           GPRINT:ds1max:"%6.2lf %Sbps"
           GPRINT:ds1avg:"%6.2lf %Sbps"
           GPRINT:ds1min:"%6.2lf %Sbps"
           GPRINT:ds1pct:"%6.2lf %Sbps\l"

       Offsetting a line on the y-axis

       Depending on your needs you can do this in two ways:

       o   Offset the data, then graph this

               DEF:mydata=my.rrd:ds:AVERAGE

           Note: this will also influence any other command that uses "data"

               CDEF:data=mydata,100,+
               LINE1:data#FF0000:"Data with offset"

       o   Graph the original data, with an offset

               DEF:mydata=my.rrd:ds:AVERAGE

           Note: no color in the first line so it is not visible

               LINE1:100

           Note: the second line gets stacked on top of the first one

               LINE1:data#FF0000:"Data with offset":STACK

       Time ranges

           Last four weeks: --start end-4w --end 00:00
           January 2001:    --start 20010101 --end start+31d
           January 2001:    --start 20010101 --end 20010201
           Last hour:       --start end-1h
           Last 24 hours:   <nothing at all>
           Yesterday:       --end 00:00

       Viewing the current and previous week together

           --end now --start end-1w
           DEF:thisweek=router.rrd:ds0:AVERAGE
           DEF:lastweek=router.rrd:ds0:AVERAGE:end=now-1w:start=end-1w

       Shift the data forward by one week (604800 seconds)

           SHIFT:lastweek:604800
           [ more of the usual VDEF and CDEF stuff if you like ]
           AREA:lastweek#0000FF:Last\ week
           LINE1:thisweek#FF0000:This\ week

SEE ALSO
       rrdgraph gives an overview of how rrdtool graph works.  rrdgraph_data
       describes DEF,CDEF and VDEF in detail.  rrdgraph_rpn describes the RPN
       language used in the xDEF statements.  rrdgraph_graph page describes
       all the graph and print functions.

       Make sure to read rrdgraph_examples for tips&tricks.

AUTHOR
       Program by Tobias Oetiker <tobi@oetiker.ch>

       This manual page by Alex van den Bogaerdt <alex@ergens.op.het.net>



1.2.30                            2009-01-19              RRDGRAPH_EXAMPLES(1)
