Re: [Gnuplot-info] Plotting y-data vs two x-axis points?

[Thomas S. <t.s...@fz...>]

set xrange [0:3]
set yrange [0:1]
set xtics ("prescan" 1, "postscan" 2)
plot "datafilename" using (1):1, "" using (2):2


Praedor Atrebates wrote:
> 
> I have gnuplot 4.2 installed and have been trying to figure out how
> to plot my experimental data output.  The data is in the form of 2 
> columns, the first column labeled "prescan" and the second column 
> labeled "postscan".  Beneath these labels in each column are numbers,
> something like this:
> 
> prescan postscan
> 0.55    0.62
> 0.51    0.64
> 0.53    0.64
> 
> and so on.  What I need to do is plot these numbers over the x-axis
> over its appropriate label (prescan or postscan) and that's it.  I
> have been going over the gnuplot docs and demos but have not yet 
> found what I'm looking for (it is slow going).  What I want is akin
> to this:
> 
> 1.0	|
> 	|
> 	|
> 	| 				*
> 	| 	 * 			*
> 	|	 *
> 0.5	| 	 *			*
> 	|
> 	|
> 	|
> 	|
>    	|________________________________
>            	|                   	 |
>         	prescan             postscan
> 
> How do I do this?  How do I get gnuplot to simply take my two column
> header/labels and place them as the points on the x-axis and then plot
> the datapoints over them?  I have been going over the documentation and 
> various web FAQs and tutorials, and though I find many examples that are 
> close to what I am after, nothing ever actually gets me to above graph
> (they 
> points may at times be plotted as linespoints or as histograms too but
> that I 
> can handle).
> 
> I would be most grateful for aid here.
> 
> Praedor
> -- 
> Reichstag fire is to Hitler as 9/11 is to Bush
> 
>  
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