Survex and dates

[Olly Betts]

On Wed, Jul 28, 2010 at 02:54:33PM +0200, Graham Mullan wrote:
> No, you have not seen anything on this from me, before, but I believe  
> Andrew posted it some time back. We have data in our current models that  
> dates back to the 1940s. Indeed, this winter I am going to be sorting  
> out some from 1948 and 1949 for Co. Clare. UBSS has been better than  
> most at archiving its raw data.

OK, so the quick fix is to change the 3d file spec to make the dates be
signed offsets from the 1970 epoch (instead of unsigned).  Since it's
not 2038 yet this isn't going to change the meaning of any existing
3d files unless they already have bogus dates in (and cavern currently
rejects dates in 2038 or later anyway, though other programs may not
have this restriction).

> I am afraid I don't know where to file on the trac system & cannot find  
> anything on the Survex website that tells me how. Probably my fault but  
> I am in haste, now.

http://trac.survex.com/

There was a link from the front page of survex.com, but I see I managed
to remove it when adding the new item for 1.1.14 (it was an older "news
item").  I'll add a proper link.

Cheers,
    Olly