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Groups > comp.graphics.apps.gnuplot > #2759 > unrolled thread

Plot with constant x and variable y

Started byoscar.rotava@gmail.com
First post2015-02-19 04:55 -0800
Last post2015-02-20 03:11 -0800
Articles 5 — 2 participants

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  Plot with constant x and variable y oscar.rotava@gmail.com - 2015-02-19 04:55 -0800
    Re: Plot with constant x and variable y Karl <mail.kfr@gmx.net> - 2015-02-19 16:01 +0100
    Re: Plot with constant x and variable y oscar.rotava@gmail.com - 2015-02-19 11:02 -0800
    Re: Plot with constant x and variable y oscar.rotava@gmail.com - 2015-02-19 11:19 -0800
    Re: Plot with constant x and variable y oscar.rotava@gmail.com - 2015-02-20 03:11 -0800

#2759 — Plot with constant x and variable y

Fromoscar.rotava@gmail.com
Date2015-02-19 04:55 -0800
SubjectPlot with constant x and variable y
Message-ID<1b2a005c-9409-4392-a80c-db35f6c3b56d@googlegroups.com>
Pals

How to plot data with constant x and varying y (a vertical line) without using set arrow? I need such "curve" to be present in a legend to describe one of the plotted lines. 

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#2760

FromKarl <mail.kfr@gmx.net>
Date2015-02-19 16:01 +0100
Message-ID<mc4trc$58c$1@news.rz.uni-karlsruhe.de>
In reply to#2759
Am 19.02.2015 um 13:55 schrieb oscar.rotava@gmail.com:
> Pals
> 
> How to plot data with constant x and varying y (a vertical line) without using set arrow? I need such "curve" to be present in a legend to describe one of the plotted lines. 
> 

Why not "set arrow" ? That´s exactly what arrows are there for.

set arrow 1 nohead from graph .8,.8 to first 3.4,f(3.4)

or similar. Check "help coordinates"


The alternative is using the special filename '+', that allows you to
have an independent variable that is not the abscissa.

plot yourfunction(x), "+" [y=3:5] using (3):(y) with lines notitle

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#2765

Fromoscar.rotava@gmail.com
Date2015-02-19 11:02 -0800
Message-ID<057748cc-0a76-408e-94bb-783dee12c94b@googlegroups.com>
In reply to#2759
Em quinta-feira, 19 de fevereiro de 2015 10:55:09 UTC-2, oscar....@gmail.com  escreveu:
> Pals
> 
> How to plot data with constant x and varying y (a vertical line) without using set arrow? I need such "curve" to be present in a legend to describe one of the plotted lines.


> plot yourfunction(x), "+" [y=3:5] using (3):(y) with lines notitle 

Gnuplot complains that y needs to be integer. Is there any way for y to be a real number?

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#2766

Fromoscar.rotava@gmail.com
Date2015-02-19 11:19 -0800
Message-ID<6da5c2d1-842a-461b-b270-64d85236b539@googlegroups.com>
In reply to#2759
Em quinta-feira, 19 de fevereiro de 2015 10:55:09 UTC-2, oscar....@gmail.com  escreveu:
> Pals
> 
> How to plot data with constant x and varying y (a vertical line) without using set arrow? I need such "curve" to be present in a legend to describe one of the plotted lines.

I found out that "set yrange" takes care of that.

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#2770

Fromoscar.rotava@gmail.com
Date2015-02-20 03:11 -0800
Message-ID<0d3736ef-5094-45bd-8606-8df16f406afd@googlegroups.com>
In reply to#2759
Em quinta-feira, 19 de fevereiro de 2015 10:55:09 UTC-2, oscar....@gmail.com  escreveu:
> Pals
> 
> How to plot data with constant x and varying y (a vertical line) without using set arrow? I need such "curve" to be present in a legend to describe one of the plotted lines.

Thanks for the help. The solution is more elegant than using set arrow.

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