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Re: [OT] Graphing with GNUPlot

To: Austin Gonyou <austin@xxxxxxxxxxxxxxx>
Subject: Re: [OT] Graphing with GNUPlot
From: jtripp@xxxxxxxx
Date: Thu, 17 Jan 2002 18:34:44 -0700 (MST)
Cc: linux-xfs@xxxxxxxxxxx
In-reply-to: <1011315960.28114.8.camel@UberGeek>
Sender: owner-linux-xfs@xxxxxxxxxxx
You can use CSV, but possibly not in the way you want to.  It looks like
there must be spaces after the commas as well.  Gnuplot wants there to be
a single point per line of the data file.

Examples are:

# Gnu population in Antarctica since 1965
1965   103
1970   55
1975   34
1980   24
1985   10

which is to be plotted with:

pop(x) = 103*exp((1965-x)/10)
plot [1960:1990] 'population.dat', pop(x)

You can easily add commas to the above data
and still plot it.

(e.g.
1965, 103
1970, 55 ... etc)

In the case of

1965, 103, 110, 34,
1970, 55,  75, 23,
1975, 34, 22, 10

You can using some thing like the using option.

plot [1960:1990] 'population.dat' using 1:2, 'population.dat' using 1:3,
'population.dat' using 1:4

This will pick of the first column and the second or the first and the
third, etc.  Gnuplot is not going to let you use CSV without doing a
little work.


> gnuplot
gnuplot> help plot datafile

# for 3-d stuff.
gnuplot> help splot datafile

and

http://www.uni-karlsruhe.de/~ig25/gnuplot-faq/


                        .justin.


------------------------------------------------------------------------
Justin Leonard Tripp                                   justin@xxxxxxxxxx
Configurable Computing Laboratory Research Assistant      CB 461 x8-7206
Electrical and Computer Engineering Department  Brigham Young University

On 17 Jan 2002, Austin Gonyou wrote:

> I'm about ready to give up. I'm doing some benchmarking of XFS+LVM
> Striping v. XFS+HW RAID0 to determine the differences, if any, of our
> setup. I don't fully understand how gnuplot works. Can anyone give me
> some kind of idea if I can use CSV input, etc? I can't seem to find any
> of this info in the man pages or google etc. Sorry for the
> inconvenience.
>
>
> --
> Austin Gonyou
> Systems Architect, CCNA
> Coremetrics, Inc.
> Phone: 512-698-7250
> email: austin@xxxxxxxxxxxxxxx
>
> "It is the part of a good shepherd to shear his flock, not to skin it."
> Latin Proverb
>


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