Re: [Gnuplot-info] plotting eigenvalue spectrum

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

Suppose your list of values is in the file E2.dat and you want to plot
these at x=2 (maybe you have other files of values to plot at x=1,
x=3, etc).

Here's one way to do it:

set log y
width = 0.5
thickness = .05
set xrange [0:4]
plot 'E2.dat' using (2) : (column(1)) : (width) : (thickness) with boxxy

On Mon, Mar 21, 2016 at 2:34 PM, Patrick Alken <al...@co...> wrote:
> Hello,
>
>    I have some eigenvalues from a matrix, and I'm trying to reproduce
> the figure shown here:
>
> http://postimg.org/image/kkrdnplqb/
>
> IE: I want to plot a short horizontal line for each eigenvalue with a
> log-scale on the y axis. I'm not sure where to begin with gnuplot. A
> small sample of my eigenvalues are given below. Could someone point me
> in the right direction on how to make a plot like that? Many thanks in
> advance.
>
> Some eigenvalues
> -----
> 3.957460082008e+02
> 4.152203023915e+02
> 6.344681045164e+02
> 7.201259544060e+02
> 1.472607386190e+03
> 1.696166901540e+03
> 2.024675409564e+03
> 7.702693211850e+03
> 1.236882176450e+04
> 2.005060332562e+05
> -----
>
> Patrick
>
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