[Gnuplot-info] Creating graphs from byte transfers and scheduling them

[Boniforti F. <fl...@pi...>]

Hello everybody.

I'm pretty new at gnuplot, but I already achieved my first result...
(see: http://yfrog.com/j8polti200911p )

Now, what I'm doing is to grab every night the total amount of traffic
being sent/received via SSH between my server and a couple of different
remote hosts. I achieved this via iptables, but I don't want to bother
you all... The result of this data collection is like:

2009-11-16      4296994550      155016994
2009-11-17      6458167774      228657538
2009-11-18      8776045950      424622670

The columns represent date, bytes received, bytes sent.

I now would like to schedule a daily update of the graph you can see at
the above URL, but also:

A) the graph should be generated *new* when the actual month is over
(I'd like to have different PNGs for each month);
B) it should be schedulable, but I don't know how to put or pass
variables to the plot script

Here the plot script I'm using:

set term png
set output 'polti-2009-11.png'
set timestamp 'Ultimo aggiornamento: %d.%m.%Y' top
set xdata time
set timefmt '%Y-%m-%d'
set xrange ['2009-11-01':'2009-11-30']
set xlabel 'Data'
set format x '%d.%m'
set ylabel 'Bytes'
set format y '%.0s %cb'
set title 'Traffico'
set key off
set boxwidth 0.8 relative
set style fill solid 1.0
plot '2009-11-213.200.254.141.dat' using 1:2 with boxes fs solid,\
'2009-11-213.200.254.141.dat' using 1:3 with boxes fs solid

Any help will be appreciated, thanks in advance!

Flavio Boniforti

PIRAMIDE INFORMATICA SAGL
Via Ballerini 21
6600 Locarno
Switzerland
Phone: +41 91 751 68 81
Fax: +41 91 751 69 14
URL: http://www.piramide.ch
E-mail: fl...@pi...