[Gnuplot-info] Plotting parameters as data points

[Stemat <ste...@ph...>]

Hello everybody! 
I have the following problem:
After a series of fits I want to summarize my fit results in a seperate plot
with every result of the parameter of the various fits depicted as a point.
Say my parameters are named a1....a7 for the fits I have (all have only one
parameter of interest)
I tried the following:

plot '-' w p ls 2 
1 a1 
2 a2  
3 a3  
4 a4  
5 a5  
6 a6  
7 a7
e

However, gnuplot just plots the points (0,1),
(1,2),(2,3),(3,4),(4,5),(5,6),(6,7)

If I explicetly write 

plot '-' using 1:2 w p ls 2 
1 a1 
2 a2  
3 a3  
4 a4  
5 a5  
6 a6  
7 a7
e

it says ' Skipping data file with no valid points'
The same happens if i don't try to draw my fitparameters, but explicetly set
the parameters befor, e.g. a1=3, a2=2, a3 =0,...

So basically the questions: how do I plot parameters as data points?

As a workaround I could also print the results into a table file and load
this again. How do I do that?
Using the logfile of the fit is not an option for me as there is too much
additional information which I would have to delete manually.

I am using gnuplot 4.4 patchlevel 4 on a windows system.

Thank you for your help!
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