[Gnuplot-info] How to plot data at the specified x values when data file has y values

[Jian-Ming Z. <jm...@gm...>]

Hi,

I have several data files which contain only one column (y values) as
follows.
162
144
140
122
…

I plot the first column in the files as y values by using the command:
plot "datafile" using 1 with linespoints

The data will be plotted along the x axis at 0, 1, 2, …

However, I want to show that the first data is at x = 100, the second data
is at x = 200 and so on. If the data file contains two columns for the x
values and y values, it should be
100 162
200 144
300 140
400 122
…
and the command is: plot "datafile" using 1:2 with linespoints

I don't want to modify my data files to contain two columns. I have tried
"set xtics 100, 100" but it did now work as expected.

How can I plot data with the specified x values when the data file has only
one column for y values?

Thanks.

ps. I can use another file which contains the x values if needed.