Survex and dates

[Graham Mullan]

No, the date should be the date the data was collected it can be 
processed any number of times after that and it really doesn't matter, 
but the date of the survey work itself can matter as it can be affected 
by things like magnetic variation.

Graham
--
graham.mullan at coly.org.uk

0117 9502556 or 07887 637064 (or 0844 2327803)

On 11/08/2010 11:43, David Gibson wrote:
> In article "Survex and dates" in<!survex>, on Wed, 11 Aug 2010
> Olly Betts<olly at survex.com>  wrote
>
>> A 64-bit signed time_t allows you to go back to before 292 billion
>> years BC.
>
> Am I missing something here?  Surely the "date" is the date the data was
> "processed". It seems a bit perverse to, for example, take some data
> from a survey made in the 1950s, type it in, and then label it as
> "1950". Isnt that a bit like digitising an old book and then hacking
> into the file system to alter the time-stamp of the file youve just
> created?
>