How to plot two scatter plots on the same graphic using gnuplot

Question

I have a single file with three columns call them x,y,z; I need to plot on the same graphic x VS y and x VS z.

How to plot two scatter plot on the same graphic using gnuplot?

EDIT I know that to plot a single function I have to write something like

plot 'file name' using 1:2

I don't konw how to plot together 1:2 and 1:3

Sorry, but have you tried anything?

Christoph
– Christoph

2017-11-02 18:34:04 +00:00
Commented Nov 2, 2017 at 18:34 — Christoph
– Christoph, Commented Nov 2, 2017 at 18:34

Ptheguy · Accepted Answer · 2017-11-04 17:55:42Z

3

If you want to plot Y and Z on the same axis with respect to x, then

plot "filename" u 1:2, "" u 1:3

If you want two different y-axes, that is, you want y on one axis and z on a secondary axis, then

set y2tics <start>,<incr>,<end>
plot "filename" u 1:2, "" u 1:3 axes x1y2

Note that y2tics lets you configure the secondary y axis; in particular, here it lets you decide the starting value, the ending vale, and the incrementation. Additionally, any command you know for y carries on for the secondary axis by using y2 (for example, to set the label or range, use y2label or y2range).

answered Nov 4, 2017 at 17:55

Ptheguy

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