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Newsgroups: comp.graphics.apps.gnuplot
Date: Tue, 20 Nov 2018 08:28:13 -0800 (PST)
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Subject: Re: How to plot a vertical line in GNUPLOT, say x=3.
From: Darshan Beniwal <darshanbeniwal11@gmail.com>
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Xref: csiph.com comp.graphics.apps.gnuplot:4074

On Tuesday, November 20, 2018 at 9:56:44 PM UTC+5:30, Karl Ratzsch wrote:
> Am 20.11.2018 um 17:12 schrieb Darshan Beniwal:
> > On Tuesday, November 20, 2018 at 8:08:39 PM UTC+5:30, Karl Ratzsch wrote:
> >> Am 17.11.2018 um 15:18 schrieb Gavin Buxton:
> >>> plot (x<3?-10:10)
> >>>
> >>
> >> nice, but not perfectly vertical ;-)
> >>
> >>    plot "+" us (3):(x<3?-10:10) w l
> >>
> >> otherwise
> >>
> >>   set arrow 1 nohead from 3,-10 to 3,10
> > 
> > Yes, you are right Karl Ratzsch. I made a plot with your command also, gives me required to my work.
> > But Gavin Commands also gives me the perfect verticle line. I don't know why you said: "not perfectly verticle." 
> > Thank you Karl .
> 
> 
>   set sample 100 # that's the default
>   plot (x<3?-10:10)
>   replot "+" us (3):(x<3?-10:10) w l
> 
> if you increase the sampling, it _looks_ nearly vertical, but still isn't.

Oh!!! Noted with thanks Karl.