Re: [Gnuplot-info] information about a point in scatter

[carminat <car...@dm...>]

I had the same problem (and asked the same question some time ago "in gnuplot
in action" forum).
Although I do not really have The Answer, I can tell what I did in my case,
which I presume is quite typical.

The data I was interested in were more or less on a extremal curve; I firs
did some transform to stighten the curve, and then I  excluded  data which
were far away from this locus  (you can do this as follows: use the "set
table" option together the ternary operator ? to print into a file numbers
of data lines which are near the curve, then use this information to extract
these lines from your dataset).

Thus you are left with a much smaller file, and plotting with labels is more
reasonable (three digits labels are not so terrible). To do it in the best
way, you should try to apply some transform so that the "curve" of
interesting data is plotted as a vertical line (so that labels do not
overlap).

Of course, I would love to have "invisible labels", which are displayed on
mouse clicks!
 


antong wrote:
> 
> I create 2D scatter plots from a text file, which works fine. But now I
> want to retrieve additional information about a specific data point. 
> [...]
> I thought that it might be possible to retrieve data from a point by
> moving the mouse over that point. But I'm not sure if that is possible at
> all. If not or if you have other ideas, pleas let me know!
> 
> Anton
> 
> 

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