[rrd-users] Re: newbie help please - RRDTOOL GPRINT/LTIME (using Perl module)

Stanley Hopcroft Stanley.Hopcroft at IPAustralia.Gov.AU
Mon May 12 05:12:44 MEST 2003

Dear Sir,

I am writing to apologise for my poor advice.

Now that I have checked more extensively, the recommendation to 
intrepret _part of the data_ returned from the RRD with RRDs::fetch (if 
(undef, undef, undef, $d) = RRDs::fetch(..); use $d->[0] as a 
time_t) was complete and utter nonsense.

(For the benefit of the archives, RRDs::fetch returns ($start, $step, 
$ds_ar, $data_ar) where $ds_ar is a ref to an array of 'Data Set names', 
and $data_ar is a ref to an array of refs, where the first array 
contains the values found in the interval [so $data_ar->[0] is the first 
set of measurements, $data_ar->[1] is the second set] and the 
measurements themselves are $data_ar->[1][1] for the first DS value, 
data_ar->[1][2] for the second DS value ..).

I beg your pardon.

Yours sincerely.

Stanley Hopcroft

'...No man is an island, entire of itself; every man is a piece of the
continent, a part of the main. If a clod be washed away by the sea,
Europe is the less, as well as if a promontory were, as well as if a
manor of thy friend's or of thine own were. Any man's death diminishes
me, because I am involved in mankind; and therefore never send to know
for whom the bell tolls; it tolls for thee...'

from Meditation 17, J Donne.

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