Re: [rrd-users] merging 2 or more DEF data sources into one CDEF?

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beautiful! Thank you. (example i pasted back is 3 ds's - working.)

/apps/epic/rrdtool-1.2.99907080300/bin/rrdtool graph /apps/epic/apache-2.0.61/htdocs/test/test.png -aPNG -se-3d -e1207628520 -l0 DEF:defwww100=/data01/epic/rrd/net/snmp/www100/.1.3.6.1.2.1.25.1.6.0.rrd:epoch:AVERAGE DEF:defwww101=/data01/epic/rrd/net/snmp/www101/.1.3.6.1.2.1.25.1.6.0.rrd:epoch:AVERAGE DEF:defwww102=/data01/epic/rrd/net/snmp/www102/.1.3.6.1.2.1.25.1.6.0.rrd:epoch:AVERAGE CDEF:ds_u0=TIME,1207369320,LT,defwww100,TIME,12074 55720,LT,defwww101,defwww102,IF,IF VDEF:vdsmax0=ds_u0,MAXIMUM "LINE1:ds_u0#ff0000:blah" "GPRINT:vdsmax0:Max %10.3lf %S"



Simon Hobson <linux@thehobsons.co.uk> wrote: Ryan Kubica wrote:
>What I am trying to do is take two or more datasources with
>different time ranges and merge them into one CDEF for display
>(graph and legend.)
>
>Example:
>
> ds foo1 - start 7 days ago, end 6 days ago
> ds foo2 - start 6 days ago, end 5 days ago
> ds foo3 - start 5 days ago, end now
>
> cdef is foo1 or foo2 or foo3
>
>I have the correct time alignments for the adjacent time intervals,
>ie: foo1 ends 60 seconds before foo2 starts on a 60 second interval
>step.

OK, for two data sources I have this in a graph definition :

DEF:data1=${RRDPath1}/${RRDName1}:${Selection}:AVERAGE
DEF:data2=${RRDPath2}/${RRDName2}:${Selection}:AVERAGE

CDEF:data=TIME,${ChangeDate},LT,data1,data2,IF

It's part of a shell script, so using normal Bash variable sustitutions.

For three sources just expand as required, I think this would do it
(with the proviso that changedate2>changedate1) :


CDEF:data=TIME,${ChangeDate1},LT,data1,TIME,${Chan geDate2},LT,data2,data3,IF,IF



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<br>beautiful!&nbsp; Thank you.&nbsp; (example i pasted back is 3 ds's - working.)<br><br>/apps/epic/rrdtool-1.2.99907080300/bin/rrdtool graph /apps/epic/apache-2.0.61/htdocs/test/test.png -aPNG -se-3d -e1207628520 -l0 DEF:defwww100=/data01/epic/rrd/net/snmp/www100/.1.3.6.1.2.1.25.1.6.0.rrd:epoch:AVERAGE DEF:defwww101=/data01/epic/rrd/net/snmp/www101/.1.3.6.1.2.1.25.1.6.0.rrd:epoch:AVERAGE DEF:defwww102=/data01/epic/rrd/net/snmp/www102/.1.3.6.1.2.1.25.1.6.0.rrd:epoch:AVERAGE CDEF:ds_u0=TIME,1207369320,LT,defwww100,TIME,12074 55720,LT,defwww101,defwww102,IF,IF VDEF:vdsmax0=ds_u0,MAXIMUM&nbsp; "LINE1:ds_u0#ff0000:blah"&nbsp; "GPRINT:vdsmax0:Max %10.3lf %S"<br><br><br><br><b><i>Simon Hobson &lt;linux@thehobsons.co.uk&gt;</i></b> wrote:<blockquote class="replbq" style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"> Ryan Kubica wrote:<br>&gt;What I am trying to do is take two or more datasources with <br>&gt;different time ranges and merge them
into one CDEF for display <br>&gt;(graph and legend.)<br>&gt;<br>&gt;Example:<br>&gt;<br>&gt; ds foo1 - start 7 days ago, end 6 days ago<br>&gt; ds foo2 - start 6 days ago, end 5 days ago<br>&gt; ds foo3 - start 5 days ago, end now<br>&gt;<br>&gt; cdef is foo1 or foo2 or foo3<br>&gt;<br>&gt;I have the correct time alignments for the adjacent time intervals, <br>&gt;ie: foo1 ends 60 seconds before foo2 starts on a 60 second interval <br>&gt;step.<br><br>OK, for two data sources I have this in a graph definition :<br><br> DEF:data1=${RRDPath1}/${RRDName1}:${Selection}:AVERAGE<br> DEF:data2=${RRDPath2}/${RRDName2}:${Selection}:AVERAGE<br><br> CDEF:data=TIME,${ChangeDate},LT,data1,data2,IF<br> <br>It's part of a shell script, so using normal Bash variable sustitutions.<br><br>For three sources just expand as required, I think this would do it <br>(with the proviso that changedate2&gt;changedate1) :<br><br>
<br>CDEF:data=TIME,${ChangeDate1},LT,data1,TIME,${ ChangeDate2},LT,data2,data3,IF,IF<br><br></blockquote><br><p> _______________________________ ___________________<br>Do You Yahoo!?<br>Tired of spam? Yahoo! Mail has the best spam protection around <br>http://mail.yahoo.com
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