I have files looking like this:
Number Data1 Data2
1 9.10 4.022
2 15.27 3.996
3 21.92 4.004
4 21.19 4.026
5 20.67 4.022
6 20.99 4.000
7 19.80 4.004
8 20.01 3.931
9 20.18 4.004
10 19.78 4.007
I want to plot Number in X axes, Data1 in leftY and Data2 in rightY, but I can not figure out how to do it.
Thanks
Just a brief annotated sample, using your data saved in a file so.dat:
# Set ticks for 2nd y axis
set y2tics
# We don't want to see the left ticks on the right axis
set ytics nomirror
# Set ranges so that the data points are not on the axis
set xrange [0:11]
set yrange [8:23]
set y2range[3.95:4.05]
# use first line of the file for labels
set key autotitle columnhead
# display key in least busy area
set key bottom right
# Title and axis labels
set title "Nice Try"
set xlabel "Number"
set ylabel "Data1"
set y2label "Data2"
plot "so.dat" using 1:2 axes x1y1 with points pointsize 2,\
"" u 1:3 axes x1y2 w p ps 2 pointtype 6
One can do a lot more decoration etc. but I think this is the essence of what you want. The graph produced:
