How to plot several datasets with titles from one file in Gnuplot?

Question

Assuming I have a file that looks like this:

\"p = 0.1\"
1 1
3 3
4 1


\"p = 0.2\"
1 3
2 2
5 2

Is it possible to make Gnuplot plot these tw

Answer 1

With a slight modification of your data set (so that the titles are given as comments):

#"p = 0.1"
1 1
3 3
4 1


#"p = 0.2"
1 3
2 2
5 2

You can plot these two data sets as separate lines like this:

plot 'data.dat' i 0 t "p = 0.1", '' i 1 t "p = 0.2"

The index (i for short) option to the plot command tells gnuplot to plot the ith data set. I can't find a way to get gnuplot to get the titles automatically from the header which is why I specified them manually with the title (t for short) option.