gnuplot stdin, how to plot two lines?

Question

I\'m trying to produce a plot with two lines using data taken from stdin. I have a file \"test.csv\":

0,1.1,2
1,2,3
2,6,4
4,4.6,5
5,5,6

I\

Answer 1

gnuplot seems to need random access (i.e. not stdin), so I think you're stuck with

# explicitly open "test" file
$ gnuplot -p -e "set datafile separator \",\"; plot 'test' using 1:2 with lines, '' using 1:3 with lines;"