Re: Gnuplot ignoring missing data

I've found that a nan (not a number) just leaves a hole and nothing plots
for that point.

Sent from my Motorola XT1527

On Fri, Jul 5, 2019, 8:42 PM Dave Horsfall <[email protected]> wrote:

> Mac Sierra + latest patches (it won't go any further), Gnuplot 5.2 p6.
>
> Have a look at www.horsfall.org/spamlog.pdf and note the weirdness at the
> end;
> there is missing data there thanks to my ISP cutting my fibre and taking
> ages
> to fix it (great anti-spam measure, I suppose).
>
> In my spamlog.gp, I have:
>
>      set datafile    missing "x"
>      ...
>      plot datafile using 1:($2)       lt rgb "red"    title 'Reject', \
>      ...
>
> Sample line from spamlog.dat:
>
>      2019/04/26      x x x x x x x x x
>      (Actually tabs, not spaces)
>
> Have I misunderstood what "missing" means?  It's been a while since I
> studied
> stats...  My understanding is just that: missing data, hence leave a hole
> in
> your graph (indistinguishable from zero in my case, but I can handle that).
>
> A message on StackOverflow also says that the above should work and not
> draw a
> line across it (not that I trust StackOverflow anyway), but that's exactly
> what
> Gnuplot is doing.
>
> Thanks.
>
> -- Dave
>
>
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