gnuplot: Same scale for graphs in multiplot

Question

My datafile looks like this:

(The speed is logged at regular intervals and the first number is the lap/run.)

I want to plot the speed as overlapping line-graphs and each run/lap should be its own graph.

My script so far:

topspeed=30
set multiplot
do for [lap=1:3] {  
    set yrange [0:topspeed] 
    set autoscale fix   
    plot "testdata.txt" using ($1 != lap ? 1/0 : $2) with lines title "speed"
}

unset multiplot

This script outputs:

undesired output

However a lap/run can have different durations and produce variable amount of datapoints.

At the moment all graphs use their own scale and get "stretched" to the same length.

What I try to archive is this:

desired output

I think somehow 'xrange' needs to be set, but various attempts with "set xrange" & "autoscale" were unsuccessful.

Christoph · Accepted Answer · 2015-07-13 11:46:27Z

0

Don't do a multiplot, but rather one plot with several lines:

set yrange [0:30]
plot for [lap=1:3] "testdata.txt" using ($1 != lap ? 1/0 : $2)

answered Jul 13, 2015 at 11:46

Christoph

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1 Comment

guthkno Over a year ago

This scales the graphs correctly, however this way one graph begins where the previous ended. (sorry if question was unclear, compare to i.imgur.com/OjQb6oj.png )

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