[Tutor] rrdtool examples.

[Jeremiah Jester]

Thanks Jay. This helps!

JJ

On Mon, 2008-12-08 at 10:01 -0800, Jay Deiman wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Jeremiah Jester wrote:
> > Is anyone on here using the python-rrdtool module for graphing and
> > analysis? If so, do you have some sample scripts you could show me.
> > There doesn't seem to be a lot out there as far as real world python
> > examples.
> >
> > Thanks,
> > JJ
> 
> Actually, I was just playing around with the rrdtool library for
> python
> last week.  It turns out that you basically just use the command line
> options as options for the different method calls (like create()).
> All
> you really have to do is check out the man pages for rrdtool to have
> all
> the documentation you need for the rrdtool python module.  You
> literally
> pass in the command line opts just as they would appear on the command
> line.  Here is a quick little script that I whipped up for playing
> purposes:
> - ------------------------
> 
> #!/usr/bin/env python
> 
> import rrdtool , time , random
> 
> stime = int(time.time()) - 5 * 86400
> dpoints = 1000
> etime = stime + (dpoints * 300)
> fname = 'test.rrd'
> gfname = 'test.png'
> 
> rrdtool.create('test.rrd' ,
>         '--start' , str(stime) ,
>         'DS:speed:COUNTER:600:U:U' ,
>         'RRA:AVERAGE:0.5:1:576' ,
>         'RRA:AVERAGE:0.5:6:336'
> )
> 
> ctime = stime
> cmiles = 0
> for i in xrange(dpoints):
>     bump = random.randint(1 , 20)
>     cmiles += bump
>     ctime += 300
>     rrdtool.update(fname , '%d:%d' % (ctime , cmiles))
> 
> rrdtool.graph(gfname ,
>         '--start' , str(etime - (24 * 3600)) ,
>         '--end' , str(etime) ,
>         '--vertical-label' , 'Speed m/h' ,
>         '--imgformat' , 'PNG' ,
>         '--title' , 'Speeds' ,
>         '--lower-limit' , '0' ,
>         'DEF:myspeed=%s:speed:AVERAGE' % fname ,
>         'CDEF:mph=myspeed,3600,*' ,
>         'VDEF:msmax=mph,MAXIMUM' ,
>         'VDEF:msavg=mph,AVERAGE' ,
>         'VDEF:msmin=mph,MINIMUM' ,
>         'VDEF:mspct=mph,95,PERCENT' ,
>         'LINE1:mph#FF0000:My Speed' ,
>         r'GPRINT:msmax:Max\: %6.1lf mph' ,
>         r'GPRINT:msavg:Avg\: %6.1lf mph' ,
>         r'GPRINT:msmin:Min\: %6.1lf mph\l' ,
>         r'GPRINT:mspct:95th Perc\: %6.1lf mph\l'
> )
> 
> - ------------------------
> 
> That, coupled with the rrdtool man pages (which are very good,
> complete
> with examples) should be enough to get you started.
> 
> - --
> Jay Deiman
> 
> \033:wq!
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v2.0.9 (GNU/Linux)
> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
> 
> iEYEARECAAYFAkk9YNwACgkQQ0lr+ZVKSBiWTQCgoBuzQVeRHBlrJ7GONQAL0RFT
> qOwAn3cnbZot0q1qGf6mOFHS8QgQc53o
> =h7CZ
> -----END PGP SIGNATURE-----
> _______________________________________________
> Tutor maillist  -  Tutor at python.org
> http://mail.python.org/mailman/listinfo/tutor
> 
> 
> 



Disclaimer: The information contained in this transmission, including any 
attachments, may contain confidential information of Panasonic Avionics
Corporation.  This transmission is intended only for the use of the 
addressee(s) listed above.  Unauthorized review, dissemination or other use 
of the information contained in this transmission is strictly prohibited. 
If you have received this transmission in error or have reason to believe 
you are not authorized to receive it, please notify the sender by return 
email and promptly delete the transmission.