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Re: Trouble setting xrange when x is a time

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From	Karl Ratzsch <mail.kfr@gmx.net>
Newsgroups	comp.graphics.apps.gnuplot
Subject	Re: Trouble setting xrange when x is a time
Date	Fri, 27 Sep 2019 23:44:44 +0200
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Am 27.09.2019 um 15:23 schrieb stuart.kendrick.sea@gmail.com:
> I would like to pull a single day out of my multi-week data file.  So I'm using 'set xrange'.  But I'm stumbling on the format:  gnuplot fails with
> C:\Temp\Plot>gnuplot wst-a-rtr.gp
> "wst-a-rtr.gp" line 32: Can't plot with an empty x range!
> 

> set xrange [ "2019-09-25" : "2019-09-26" ]


Type "show xrange" after this, and you see it didnt work. "set
xrange" does not understand formatted time data. Maybe it should
give an error message here. E.g.

  print "2019-09-25" + 1

gives

  2020.0

gnuplots string autopromotion is perhaps a bit too ambitious here. ;)

You need to transform those strings into a unix date, check the
strptime() function.

   Karl

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Trouble setting xrange when x is a time stuart.kendrick.sea@gmail.com - 2019-09-27 06:23 -0700
  Re: Trouble setting xrange when x is a time Karl Ratzsch <mail.kfr@gmx.net> - 2019-09-27 23:44 +0200
    Re: Trouble setting xrange when x is a time Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2019-09-28 15:23 +0200
    Re: Trouble setting xrange when x is a time stuart.kendrick.sea@gmail.com - 2019-09-30 04:19 -0700

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