Groups > comp.graphics.apps.gnuplot > #4046

Rescale axis after smooth

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Date	Wed, 26 Sep 2018 02:56:05 -0700 (PDT)
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Subject	Rescale axis after smooth
From	NeilB <neil@moogsoft.com>
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Xref	csiph.com comp.graphics.apps.gnuplot:4046

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Hi there,

I'm having problems rescaling an axis with smoothed data. My csv data is a capture of cpu usage for a process and its generally quite low numbers but with occasional very large spikes e.g:

Time,CPU
0,3
1,5
2,4
3,8
4,5
5,10
6,2
7,5
8,10
9,854
10,12
11,4
12,5
13,8
14,7
15,10
16,5
17,7
18,153
19,3
20,6

If I plot this using:

set datafile separator ","
set terminal png size 1000,500
set title "CPU vs Time"
set ylabel "CPU (%)"
set xlabel "Time (s)"
set key outside;
set key right center;
set grid
plot "temp.csv" u 1:2 smooth sbezier lw 2 title 'cpu'

I get a nice smoothed CPU graph but the y axis maximum is set to the max of the csv data i.e. 854 so the curve is very low in the plot. I want to set the y axis maximum to be the max of the smoothed data and have tried using the MIN/MAX variables and replot i.e:

set datafile separator ","
set terminal png size 1000,500
set title "CPU vs Time"
set ylabel "CPU (%)"
set xlabel "Time (s)"
set key outside;
set key right center;
set grid
plot "temp.csv" u 1:2 smooth sbezier lw 2 title 'cpu'
set yr [GPVAL_DATA_Y_MIN:GPVAL_DATA_Y_MAX]
replot

...but got the same result.

Is this doable? Can anyone help?

many thanks,

Neil

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Rescale axis after smooth NeilB <neil@moogsoft.com> - 2018-09-26 02:56 -0700
  Re: Rescale axis after smooth Karl Ratzsch <mail.kfr@gmx.net> - 2018-09-26 12:33 +0200
    Re: Rescale axis after smooth NeilB <neil@moogsoft.com> - 2018-09-26 03:50 -0700

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