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

[Ethan A M. <eam...@gm...>]

On Wednesday, 21 August 2013, Jian-Ming Zheng wrote:
> 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

  plot 'datafile' using (100. * (1+column(0))) : 1


> 
> 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.
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