Hello,
I would like to be able distinguish values that are invalid
calling RRDs::fetch vs using rrdtool fetch. That is:
at time 1142539176
calling:
rrdtool fetch "<myrrdhere>" AVERAGE -r 1 -e now -s e-1min
returns:
timestamp sum
1142539080: 2.3500000000e+01
1142539140: nan
1142539200: nan
whereas using:
my ($start,$step,$names,$data) = RRDs::fetch ...
foreach my $line (@$data) {
print " ", scalar localtime($start), " ($start) ";
$start += $step;
foreach my $val (@$line) {
printf "%12.1f ", $val;
}
print "\n";
}
prints out:
1142539080 23.5
1142539140 0.0
Two questions:
1) Since at time 1142539176 rrdtool fetch returns
nan for times 1142539140 & 1142539200, but later fills
them in I assume that they are just not calculated yet, as
opposed to nan results due to data points that will never
come in -- is there a way to determine that this is the case ?
2) Is there someother way I can use RRDs::fetch to get back
something other than 0.0 for the values that appear as nan
when I call rrdtool fetch, since 0.0 may be a valid return
value for my calculation?
Thank you,
Ann
--
Unsubscribe mailto:[EMAIL PROTECTED]
Help mailto:[EMAIL PROTECTED]
Archive http://lists.ee.ethz.ch/rrd-users
WebAdmin http://lists.ee.ethz.ch/lsg2.cgi
