[drraw-users] Displaying a LAST value in the legend, when no LAST RRA is present

[Thomas Lorenzen]

Hi'

Sorry about the late reply to this one.

The thing is, that my rrd files only have archives of types AVERAGE AND MIN AND MAX configured. Thus I have the following set in drraw.conf.

# Names of defined RRAs and the names to use on the graphs
# ** IMPORTANT: These MUST match with how your RRD files are setup!
@rranames = ( 'AVERAGE', 'MIN', 'MAX' );
%rranames = ( 'AVERAGE' => 'Avg',
              'MIN'    => 'Min',
              'MAX'     => 'Max',
              );

This in turn means, that I have no such thing as a "'Last' Additional GPRINTs" available in the web editor. It only features adding legends for AVERAGE OR MIN OR MAX. Still, though, a legend telling, what the last value is, is very much wished for. Do you have some good ideas on, how to proceed with that.

Best regards.

Thomas.

--- Den tirs 9/6/09 skrev Christophe Kalt <kalt at taranis.org>:

Fra: Christophe Kalt <kalt at taranis.org>
Emne: Re: [drraw-users] Displaying a LAST value in the legend, when no LAST  RRA is present
Til: "Martin Schuster (IFKL IT OS DSM CD)" <Martin.Schuster1 at infineon.com>
Cc: "Thomas Lorenzen" <ki11er_bob at yahoo.dk>, "drraw-users at lists.taranis.org" <drraw-users at lists.taranis.org>
Dato: tirsdag 9. juni 2009 13.49

Guess I missed this earlier, but in the editor, that's what the "'Last' Additional GPRINTs" gives you.

On Tue, Jun 9, 2009 at 05:57, Martin Schuster (IFKL IT OS DSM CD) <Martin.Schuster1 at infineon.com> wrote:

Thomas Lorenzen wrote:

> [...]

> Now, the rrd archives, which I have for drraw, also only have RRA archives of types AVERAGE AND MIN AND MAX. I am thus speculating, if drraw could be instructed to tell me in its legend about the latest value for each graphed dataseries. just like it is done in munin.


>

According to the rrdgraph_rpn manpage, there is a variable called LAST.



So you'd do something like

VDEF:lastpoint=ping,LAST

and then use

GPRINT:lastpoint:%5.2f

to print the value in the graph legend.



hth,

--

Infineon Technologies IT-Services GmbH   Martin.Schuster1 at infineon.com

Lakeside B05, 9020 Klagenfurt, Austria   Martin Schuster

         FB: LG Klagenfurt, FN 246787y   +43 5 1777 3517



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