Re: [Gnuplot-info] Making/finding a timefmt for the unix date command default output

[Alan C. <ala...@gm...>]

OK, I hadn't really tried parsing this format in Gnuplot before I
don't think, I've done the more common American YY-MM-DD HH:MM:SS.  I
thought Gnuplot date parsing was a more complete subset of strptime
and strftime.  A way to ignore 1 character (at a time) would help
since default date output is fixed width, but then there's that month
abbreviation.  %s is just so handy.

Yeah, I've done stuff like
adate=`date +"%Y-%m-%d_%H-%M"`
outname=bp_$adate.txt
for file names

In the Joe editor I can do ctrl-k r like I was going to read from a
file, then supply !date instead of a file name, but I still get the
Sat Jan 20 09:57:00 EST 2018 format.  Oh well, so I wasn't misreading
the documentation.

Got it.  Using bash anyway.  Mismash of single, double quotes and backticks:
pi3# alias gdate='echo `date +"%Y-%m-%d_%H-%M"`'
pi3# gdate
2018-01-20_10-11


On 1/20/18, Hans-Bernhard Bröker <HBB...@t-...> wrote:
> Am 20.01.2018 um 04:28 schrieb Alan Corey:
>> I'd like to be able to do date >> datafile, then edit the file to add
>> other columns, and have Gnuplot understand the date/time format which
>> looks like:
>>
>> Fri Jan 19 22:08:14 EST 2018
>>
>> It seems like this must be a common thing to do.
>
> Not really, since the common approach would be that, if you want a
> machine to parse that timestamp, you better not output it in a format
> designed strictly for human consumption.  Not even if that's the default
> format.
>
> This is what date options like +'%s', -Iseconds or --rfc3339 are for,
> the latter two possibly combined with -u to get absolute timestamps.
>
> Or better yet, see if your editor can't insert the timestamps itself,
> instead of you having to do this in a two-step process.
>


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