Re: [Gnuplot-bugs] bug?

[Jérôme B. <jer...@gm...>]

Hello,

As far as I can test with gnuplot 4.4 patchlevel 2

1) Your file does not contain any 3.0 value in the third column.
However it contains plenty of 3.0E6, so I changed the condition
accordingly.

2) the ? operator does work, you can see this by replacing 1/0 by a
numerical value or by $6. I would say he guilty is 1/0 which prevents
the dots to be connected between the point before and the point after
the ignored one.

Considering I read this mailing list for months and never saw any
answer to a question (only lots of spam), I do not expect your bug to
find a solution anytime soon (please, Gnuplot developers, prove me
wrong and reply to this mail!). So in your case, I would use a
preprocessing command :

$ awk '{if ($3==3.00000000E+06) print $0 }' file > file_with_3E6

Best regards
Jérôme Borme

2011/4/1, Mélanie Godart <go...@as...>:
> Hello,
>
> I'm a PhD student in Astrophysics in Belgium, finishing the thesis. I
> put the gnuplot 4.2 on my computer rather than gnuplot 4.0 because I
> needed the set object rectangle option.
> However, I found out that when using the ? operator to filter the data
> the lines don't appear. Only the points:
>
> plot 'file' u 4:(($3==3.0) ? $6 : 1/0) w lp lw 3 --> only the points appear
> in my graph
> plot 'file' u 4:(($3==3.0) ? $6 : 1/0) w l lw 3 --> nothing appear...
>
> Could you help me? I couldn't find any information about this on internet, I
> already search a lot, is it a bug?
> Is it still present in version 4.4?
>
> Thank you in advance,
>
> Mélanie
>
>
>
> --
> Mélanie Godart                            go...@as...
> Institut d'Astrophysique et de Géophysique (Bât B5c, bureau 1/5)
> 17, allée du 6 Août                            Tel: 32-4-3669762
> Sart Tilman, B-4000 Liège                      Fax: 32-4-3669737
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