On Aug 18, 2008, at 11:52 PM, Andrew Ross wrote: > 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 > Sorry--no change with "UTC" instead of "". Jerry
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