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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>First, this is the MRTG forum. This
question is better suited to the RRDtool mailing list (see the <a
href="http://www.rrdtool.org/">www.rrdtool.org</a> website for details)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Having said that, you’ll need to give more
information. What is the structure of your RRD? Maybe your format doesn’t match
your code, or you are not storing correct data. How about a dump of some data?
If the file is full of unknowns, then your fetch (and graph) will result in
unknowns and no data as well. Do you have a suitable RRA available in the RRD?
If not then you won’t get anything meaningful. What values are you (trying
to) store in the RRD? Are they within the defined range for the DS? You haven’t
checked the RRDs::error value after the update and graph calls, maybe they are
failing for some reason?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>There’s a few places to start…<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Steve<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoPlainText><b><font size=2 face=Tahoma><span lang=EN-US
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span lang=EN-US style='font-size:10.0pt;font-family:Tahoma'>
mrtg-bounces@lists.oetiker.ch [mailto:mrtg-bounces@lists.oetiker.ch] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Gayan S. Amarasiri<br>
<br>
</span></font><b><font size=2 color=black face=Calibri><span lang=EN-US
style='font-size:11.0pt;font-family:Calibri;color:black;font-weight:bold'><o:p></o:p></span></font></b></p>
<p class=MsoPlainText><b><font size=2 color=black face=Calibri><span
lang=EN-US style='font-size:11.0pt;font-family:Calibri;color:black;font-weight:
bold'>I am using the following script to draw a graph using rrdtool. But it is
not displaying any value. When I check with “rrdtool fetch” command it
displayed as “nan”. Please help on this.<o:p></o:p></span></font></b></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt;font-family:"Times New Roman"'><o:p> </o:p></span></font></p>
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