[rrd-users] Teething problems with rrdtool "expected 5 data source readings (got 4) from..."

Adam Nealis adamnealis at yahoo.co.uk
Mon Dec 9 18:35:43 MET 2002

As a way to get the hang of rrdtool I decided to create
graphs of daily price changes in some funds I invested
in. So I expect to be able to draw a graph consisting of
4 lines on one graph.

But when I run

$ rrdtool update

as below, with the

$ rrdtool create

as below, I get the following error message:

ERROR: expected 5 data source readings (got 4) from 1038268800:3.085:0.982:0.705:0.321:...

What am I doing wrong? I have RTFM, and gone through the tutorial
but I can't work out what I am doing wrong.

Thanks in advance for any help,

Adam Nealis

$ rrdtool --version
RRDtool 1.0.38  Copyright 1997-2001 by Tobias Oetiker <tobi at oetiker.ch>

$ rrdtool create cl.rrd --start 1038268800 -s 86400 \
        DS:Day:COUNTER:86400:U:U \
        DS:MLIM_Global_Bond:GAUGE:86400:U:U \
        DS:Schroders_UK_Mid:GAUGE:86400:U:U \
        DS:Threadneedle_UK_S_G:GAUGE:86400:U:U \
        DS:Fidelity_Japan:GAUGE:86400:U:U \

$ rrdtool update cl.rrd 1038268800:3.085:0.982:0.705:0.321

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