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 com
       ments 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\n"
	   LINE1:ds0b#00CCFF:"resolution 1800 seconds per interval\n"
	   LINE1:ds0c#FF00FF:"resolution 7200 seconds per interval\n"

       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    "

       Note: some lines contains the new-line character "\n"

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

       Offsetting a line on the y-axis

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

	  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"

	  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:   
	   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 ?DEF 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 

       This manual page by Alex van den Bogaerdt 



1.2.15				  2006-07-14		  RRDGRAPH_EXAMPLES(1)