I have some data.
#Time Distance
1 3
2 5
4 9
8 11
12 17
14 20
16 34
20 40
I want to plot the cumulative distance wrt time in gnuplot ... (it should be easy) but I do not know how.
x
For anyone still looking for this sort of thing, If your gnuplot version is 4.4 or newer, you can do the following:
a=0
#gnuplot 4.4+ functions are now defined as:
#func(variable1,variable2...)=(statement1,statement2,...,return value)
cumulative_sum(x)=(a=a+x,a)
plot "test.dat" using 1:(cumulative_sum($2))
If your data is in the file datafile, you can do a cumulative plot like so:
$ gnuplot
gnuplot> plot "datafile" smooth cumulative
Assuming your data is in a file "test.txt", how about:
plot "<awk '{i=i+$2; print $1,i}' test.txt" with lines
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