Setting x ascis in gnuplot

Question

I want to write gnuplot plot with a file which has just one column. My file is missing X. My X is based on a row of numeber which go from 2.5 to 30 with a step of 0.1. Is there a command in gnuplot which does that?

Answer 1

You can't to my knowledge do it directly in gnuplot, but you can make the correct file in the terminal just before running gnuplot (I am assuming your data file is called file.dat):

seq 2.5 0.1 30 > xaxis.dat
paste xaxis.dat file.dat > newfile.dat

Now you can plot newfile.dat in gnuplot.