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Thanks for the suggestion, that is indeed the issue. So when using a LIMIT in a CDEF should you allow for a little overage on your range? Is this a common issue? <BR> <BR> <BR>rrdtool xport DEF:ds450=450.rrd:450:AVERAGE CDEF:limit450=ds450,100,- XPORT:ds450:"source" XPORT:limit450:"mod"<br><?xml version="1.0" encoding="ISO-8859-1"?><BR><xport><br> <meta><br> <start>1324962000</start><br> <step>300</step><br> <end>1325048400</end><br> <rows>289</rows><br> <columns>2</columns><br> <legend><br> <entry>source</entry><br> <entry>mod</entry><br> </legend><br> </meta><br> <data><br> <row><t>1324962000</t><v>1.0000000000e+02</v><v>0.0000000000e+00</v></row><br> <row><t>1324962300</t><v>1.0000000000e+02</v><v>0.0000000000e+00</v></row><br> <row><t>1324962600</t><v>1.0000000000e+02</v><v>0.0000000000e+00</v></row><br> <row><t>1324962900</t><v>1.0000000000e+02</v><v>0.0000000000e+00</v></row><br> <row><t>1324963200</t><v>1.0000000000e+02</v><v>0.0000000000e+00</v></row><br> <row><t>1324963500</t><v>1.0000000000e+02</v><v>0.0000000000e+00</v></row><br> <row><t>1324963800</t><v>1.0000000000e+02</v><v>0.0000000000e+00</v></row><br> <row><t>1324964100</t><v>1.0000000000e+02</v><v>0.0000000000e+00</v></row><br> <row><t>1324964400</t><v>1.0000000000e+02</v><v>0.0000000000e+00</v></row><br> <row><t>1324964700</t><v>1.0000000000e+02</v><v>1.4210854715e-14</v></row><br> <row><t>1324965000</t><v>1.0000000000e+02</v><v>0.0000000000e+00</v></row><br> <row><t>1324965300</t><v>1.0000000000e+02</v><v>-1.4210854715e-14</v></row><br> <row><t>1324965600</t><v>1.0000000000e+02</v><v>0.0000000000e+00</v></row><br> <row><t>1324965900</t><v>1.0000000000e+02</v><v>-1.4210854715e-14</v></row><br> <row><t>1324966200</t><v>1.0000000000e+02</v><v>-1.4210854715e-14</v></row><br> <row><t>1324966500</t><v>1.0000000000e+02</v><v>0.0000000000e+00</v></row><br> <row><t>1324966800</t><v>1.0000000000e+02</v><v>0.0000000000e+00</v></row><br> <row><t>1324967100</t><v>1.0000000000e+02</v><v>0.0000000000e+00</v></row><br> <row><t>1324967400</t><v>1.0000000000e+02</v><v>0.0000000000e+00</v></row><br> <row><t>1324967700</t><v>1.0000000000e+02</v><v>-1.4210854715e-14</v></row><br> <row><t>1324968000</t><v>1.0000000000e+02</v><v>1.4210854715e-14</v></row><br> <row><t>1324968300</t><v>1.0000000000e+02</v><v>-1.4210854715e-14</v></row><br> <row><t>1324968600</t><v>1.0000000000e+02</v><v>0.0000000000e+00</v></row><br> <row><t>1324968900</t><v>1.0000000000e+02</v><v>1.4210854715e-14</v></row><br> <row><t>1324969200</t><v>1.0000000000e+02</v><v>0.0000000000e+00</v></row><br> <row><t>1324969500</t><v>1.0000000000e+02</v><v>0.0000000000e+00</v></row><br> <row><t>1324969800</t><v>1.0000000000e+02</v><v>0.0000000000e+00</v></row><br> <row><t>1324970100</t><v>1.0000000000e+02</v><v>1.4210854715e-14</v></row><br> <row><t>1324970400</t><v>1.0000000000e+02</v><v>0.0000000000e+00</v></row><br> <BR><div><div id="SkyDrivePlaceholder"></div>> From: alex@vandenbogaerdt.nl<br>> To: tjefferson2001@hotmail.com; rrd-users@lists.oetiker.ch<br>> Subject: Re: [rrd-users] Getting NaN in CDEF with LIMIT but the DEF has a validnumber<br>> Date: Wed, 28 Dec 2011 04:39:21 +0100<br>> <br>> Just guessing here: maybe somehow some numbers are bigger than 100 but smaller than 1.00000000005e+02<br>> <br>> I think you can test this by subtracting 100 in a CDEF and print the outcome.<br>> <br>> <br>> <br>> ----- Original Message ----- <br>> From: "Tom Jefferson" <tjefferson2001@hotmail.com><br>> To: <rrd-users@lists.oetiker.ch><br>> Sent: Wednesday, December 28, 2011 3:55 AM<br>> Subject: [rrd-users] Getting NaN in CDEF with LIMIT but the DEF has a validnumber<br>> <br>> <br>> <br>> <br>> <br>> <br>> I have spent a number of days re-reading the docs, searching the web, and searching old email archives but I can't find the answer to this. I have been using RRD for a long time but this issue has me stumped. I have an rrd that records a percent value from 0 - 100. When I use a CDEF with LIMIT 0,100 I get a number of NaNs but I can't figure out why. The data shows the DEF value as 100 for those periods. Any thoughts? I ran an XPORT to see the original DEF calue and the CDEF, here is what I am seeing: rrdtool xport DEF:ds450=450.rrd:450:AVERAGE CDEF:limit450=ds450,0,100,LIMIT XPORT:ds450:"source" XPORT:limit450:"mod"<br>> <?xml version="1.0" encoding="ISO-8859-1"?><xport><br>> <meta><br>> <start>1324954500</start><br>> <step>300</step><br>> <end>1325040900</end><br>> <rows>289</rows><br>> <columns>2</columns><br>> <legend><br>> <entry>source</entry><br>> <entry>mod</entry><br>> </legend><br>> </meta><br>> <data><br>> <row><t>1324954500</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row><br>> <row><t>1324954800</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row><br>> <row><t>1324955100</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row><br>> <row><t>1324955400</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row><br>> <row><t>1324955700</t><v>1.0000000000e+02</v><v>NaN</v></row><br>> <row><t>1324956000</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row><br>> <row><t>1324956300</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row><br>> <row><t>1324956600</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row><br>> <row><t>1324956900</t><v>1.0000000000e+02</v><v>NaN</v></row><br>> <row><t>1324957200</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row><br>> <row><t>1324957500</t><v>1.0000000000e+02</v><v>NaN</v></row><br>> <row><t>1324957800</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row><br>> <row><t>1324958100</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row><br>> <row><t>1324958400</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row><br>> <row><t>1324958700</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row><br>> <row><t>1324959000</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row><br>> <row><t>1324959300</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row><br>> <row><t>1324959600</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row><br>> <row><t>1324959900</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row><br>> <row><t>1324960200</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row><br>> <row><t>1324960500</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row><br>> <row><t>1324960800</t><v>1.0000000000e+02</v><v>NaN</v></row><br>> <row><t>1324961100</t><v>1.0000000000e+02</v><v>NaN</v></row><br>> <row><t>1324961400</t><v>1.0000000000e+02</v><v>NaN</v></row><br>> <row><t>1324961700</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row><br>> <row><t>1324962000</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row><br>> <row><t>1324962300</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row><br>> <row><t>1324962600</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row><br>> <row><t>1324962900</t><v>1.0000000000e+02</v><v>1.0000000000e+02</v></row> Thanks, Tim <br>> <br>> <br>> --------------------------------------------------------------------------------<br>> <br>> <br>> > _______________________________________________<br>> > rrd-users mailing list<br>> > rrd-users@lists.oetiker.ch<br>> > https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users<br>> ><br>> <br>> <br></div> </div></body>
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