Re: file naming

[Tom Droege <tdroege@veriomail.com>]

OK, we are close.

I note that Arne has listed a 9+3 proposal below.

>ajjjjfxxx.fit

I would agree to leave off the site from the string to get to 8+3 and use a 
directory instead for each system.  This leaves

jjjjfxxx.fit

jjjj  Julian Day
f      filter
xxx  sequence number

I like this better than cutting down the JD by one which was my last 
proposal.

This would then be the standard file name for data on CD.  There would be a 
directory name, which I propose to be the name stamped on the telescope if 
there is no better proposal.  If more information is needed, then one has 
to read the fits header.

I am happy to stick with our old site names.  I am H for TOM.

Arne, do you want to update your old TN or should I make a new one?

Tom




At 01:32 PM 6/14/01 -0700, you wrote:
>Chris is concerned about files being moved around and
>their uniqueness lost.  The concept was that files on
>CD be unique with 8x3 character; files on disk can be
>named anything you want.  Someone (sorry, my memory is
>poor) suggested concatenating directory name with file
>name for hard disk storage, which is one solution.
>   Another option, which gets back to the Mark III days,
>is to use that first character (which I've set to "J")
>as a unique indicator of site.  That only gives you 26
>sites without special characters or discrimination
>between lower and upper case, but perhaps that would be
>enough considering the time it takes Tom to finish
>systems; he might not reach #26!  That is a reasonable
>compromise to me, with the first character starting at
>"A" for TOM, "B" for ARNE, etc. in order of completion.
>   Therefore, the proposed scheme is
>      ajjjjfxxx.fit
>      a = unique site identifier
>      jjjj = last 4 days of the Julian Date
>      f = filter
>      xxx = running sequence number starting at 000
>      fit = file extension for fits files
>This seems to be the simplest scheme, and might be almost
>human-readable.  I'd still prefer files to be stored
>on CD underneath a site directory.
>Arne