Re: [Gnuplot-info] Problem with octal numbers and "date"

[sfeam <eam...@gm...>]

On Sunday, 02 August 2015 05:43:48 PM BBands wrote:
> It seems that the leading zero causes octal interpretation. I have no
> problem with that, but as with floor division, another unexpected result by
> most users, I think gp should at least warn. I know HBB will disagree, and
> I understand his point, so perhaps the warnings could be switched off by an
> 'expert' compilation flag. Or the behaviors could be switched on and off
> within the program??? Or a unique delimiter like '/' could be used. Feel
> free to lynch, but I think that we ought to try for expected results, not
> iso format dates for the first eight months of the year being converted to
> octal.

There is no problem with iso format dates or indeed with any 
date/time formats.  The time format routines strptime, strftime, etc
do not interpret leading zeros as indicating an octal number.

The issue only arises for integer assignment, not dates.

> Python took floor division on, so perhaps we should too?
> 
>     John
> 
> On Sun, Aug 2, 2015 at 4:31 PM, Dave Horsfall <da...@ho...> wrote:
> 
> > Version 5.0 patchlevel 1    last modified 2015-06-07
> >
> > I've just spotted a weird problem in one of my scripts.  I'm manipulating
> > the date, and I have the line "month = `date +%m`" to extract the month as
> > a number.

If it's in back-tics, it's being interpreted by the shell,
not by gnuplot.  So that particular example says nothing about
how gnuplot processes month numbers.

	Ethan


> >
> > Come August, and it appears as:
> >
> > gnuplot> month = 08
> >                   ^
> >          "health.gp", line 51: unexpected or unrecognized token
> >
> > My guess is that "08" is being parsed as an octal number, and hence
> > invalid; I could've sworn that this was working last year...
> >
> > Anyone else seeing this?
> >
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