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<div dir="ltr"><font color="#000000" size="2" face="Tahoma">Two possible ways.</font></div>
<div dir="ltr"><font size="2" face="tahoma"></font> </div>
<div dir="ltr"><font size="2" face="tahoma">1. Define a Target which does the calculation:</font></div>
<div dir="ltr"><font size="2" face="tahoma">Target[xxxx]: oid1&oid1:comm@device + oid2&oud2:comm@device</font></div>
<div dir="ltr"><font size="2" face="tahoma">This will give you a Target graph showing the total of the two OIDs
</font></div>
<div dir="ltr"><font size="2" face="tahoma">See the MRTG documentation on <a href="http://www.mrtg.org">
www.mrtg.org</a> for more details about calculations in the Target definition.</font></div>
<div dir="ltr"> </div>
<div dir="ltr"><font size="2" face="tahoma">2. If you are using RRDTool as your backend, you can use the Routers2 frontend and then define a Userdefined summary graph over the two separate Targets, and have the graphs stacked.</font></div>
<div dir="ltr"><font size="2" face="tahoma">routers.cgi*Graph[maths]: allmarks total</font></div>
<div dir="ltr"><font size="2" face="tahoma">
<div dir="ltr"><font size="2" face="tahoma">routers.cgi*Graph[science]: allmarks total</font></div>
<div dir="ltr"><font face="tahoma">routers.cgi*GraphStyle[allmarks]: stack</font></div>
<div dir="ltr"><font face="tahoma">See <a href="http://www.steveshipway.org/cgi-bin/routers2.pl">
http://www.steveshipway.org/cgi-bin/routers2.pl</a> for an example of this frontend (look at the Linux system CPU graphs)</font></div>
<div dir="ltr"><font face="tahoma"></font> </div>
<div dir="ltr"><font face="tahoma">Number (2) looks prettiest and lets you see the individual components, but (1) is simpler if you don't have Routers2/RRD installed yet.</font></div>
<div dir="ltr"><font face="tahoma"></font> </div>
<div dir="ltr"><font face="tahoma">Steve</font></div>
<div dir="ltr"><font face="tahoma"></font> </div>
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<hr tabindex="-1">
<font size="2" face="Tahoma"><b>From:</b> mrtg-bounces@lists.oetiker.ch [mrtg-bounces@lists.oetiker.ch] On Behalf Of Gayan S. Amarasiri [Gayan.Amarasiri@dialog.lk]<br>
<b>Sent:</b> Thursday, 2 July 2009 10:42 p.m.<br>
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<p class="MsoNormal"><span style="FONT-FAMILY: 'Cambria','serif'">I need to add two parameters and show it in graph using MRTG. For example let say the OID 1.3.4.5.26.626.26.26.0 gives Mathematics marks and the OID 1.3.4.5.26.626.26.27.0 gives the Science marks.
I need to draw a graph for the total marks which is the addition of the vales of the above OIDs. How to do these type of stuff? Appreciate your help.</span></p>
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