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| From | Karl Ratzsch <mail.kfr@gmx.net> |
| Newsgroups | comp.graphics.apps.gnuplot |
| Subject | Re: Piecewise function in gnuplot? |
| Date | Thu, 9 Nov 2017 08:13:21 +0100 |
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Am 08.11.2017 um 20:58 schrieb Lawrence Bottorff:
> No, actually, I need the lines depicting the individual sections to be disjoint (not connected like in the gnuplot examples) and showing the filled or empty dots on the ends of the disjoint lines.
>
Ah. You need to plot the points and lines individually.
-------------
$full << EOD
-5
5
EOD
$empty << EOD
0
EOD
plot sample [-5:0] x-1 lc 8, \
[0:5] x+1 lc 8,\
$full pt 7 lc 8,\
$empty pt 6 lc 8
----------
There's no automagic for that in gnuplot, except that gnuplot only
connects consecutive datapoints by a line IF there is no invalid
datapoint in between (see "help datapoint missing" for complete
description).
If you carefully control the sampling and do
set xr [-10:10]
set sample 21 # !!!!
plot x<0 ? -1 : x>0 ? 1 : NaN
gnuplot notices that zero is undefined and breaks the line.
Back to comp.graphics.apps.gnuplot | Previous | Next — Previous in thread | Find similar
Piecewise function in gnuplot? Lawrence Bottorff <borgauf@gmail.com> - 2017-11-08 05:21 -0800
Re: Piecewise function in gnuplot? Karl Ratzsch <mail.kfr@gmx.net> - 2017-11-08 18:21 +0100
Re: Piecewise function in gnuplot? Lawrence Bottorff <borgauf@gmail.com> - 2017-11-08 11:58 -0800
Re: Piecewise function in gnuplot? Karl Ratzsch <mail.kfr@gmx.net> - 2017-11-09 08:13 +0100
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