Re: [Gnuplot-info] how to carry sum (or similar math operation) with gnuplot

[Jon <dev...@gm...>]

Thanks! The code was run on a machine with gnuplot versioned v4.2. With your
hint, I checked it on another machine with the newest gnuplot, and it works!
This is really nice!

Sincerely,
Jon


On Sat, Jan 29, 2011 at 10:13 AM, Thomas Sefzick <t.s...@fz...>wrote:

>
> use an actual version of gnuplot, version >= 4.4
>
>
> bsmile wrote:
> >
> > Dear All,
> >
> > I am trying to carry out sum functionality on a dataset, and wonder how I
> > can possible do that.
> >
> > Suppose I have dataset aaa.txt
> > 1   4
> > 2   5
> > 3   4
> > 4   9
> > 5   10
> >
> > and I would like to get sum of the second column. I guess the basic idea
> > is
> > to use set term dumb, and thought of something like this
> >
> > set term dumb
> > s=0
> > plot 'aaa.txt' u (s=s+$2,$1):2 w l
> >
> > but it complains that ')' expected. I kind of know why as everything in
> > the
> > plot statement is treated as character expression, and might not
> recognize
> > "+" operation. Please correct me if wrong.
> >
> > So what else can I do to get me out of this problem?
> >
> > Many thanks!!
> >
> > Sincerely,
> > Jon
> >
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> Download using promo code Free_Logger_4_Dev2Dev. Offer expires
> February 28th, so secure your free ArcSight Logger TODAY!
> http://p.sf.net/sfu/arcsight-sfd2d
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