On Mon, Aug 18, 2008 at 10:09:42PM -0700, Alan Irwin wrote:
> On 2008-08-18 21:32-0700 Alan W. Irwin wrote:
>
> > On 2008-08-18 20:17-0700 Jerry wrote:
> >>
> >> As I see it, the first thing that has to be reckoned with is why x29c.c is
> >> mislabeling the axis on OS X. I've pasted a screen shot as a PDF but I
> >> suppose it won't survive the list mail process.
> >
> > No, it got attached fine, but its first label is 1970-01-14 which is not at
> > all in agreement with the C result I get here whose first label is
> > 2005-12-14 (then every two weeks after that in agreement with the "Hours of
> > television watched in Dec 2005 / Jan 2006" title).
> >
> > Hazen, does your 3rd page x29 C result on Mac OS X agree with Jerry's or
> > mine?
>
> Jerry, see also http://plplot.sourceforge.net/examples-data/demo29/x29.03.png
> which IIRC was generated on a Debian sarge box by Hazen (not his Mac OS X
> system) and agrees with the result I get on my Debian lenny box.
There are really only 2 options here.
1) mktime doesn't work on Mac OS X.
2) Mac OS X does not honour the TZ system variable correctly.
Given that C example 29 used to work, I suspect mktime is OK. Does it
make any difference if you set TZ to be "UTC" rather than ""?
Change
setenv("TZ", "", 1);
to
setenv("TZ", "UTC", 1);
Perhaps it doesn't like the blank TZ string?
Andrew
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