RE: file naming

["Creager, Robert S" <CreagRS@LOUISVILLE.STORTEK.COM>]

I would request that the filter is at the end of the name: jjjjxxxf.fts, but
only because that allows for easy sorting of the filenames - I can use atoi
to sort file names, rather than having to split and re-combine.

Shouldn't the 'f' identify the camera, rather than dark/flat?  As someone
else said, read the header to determine if it's a dark/flat/object/...

Maybe if someone knows Java, they could write a program which would do file
renaming, based on certain supported (or free-style) formats.  Then we could
stay with the original 8.3 as Arne kind of suggests, and supply a renaming
program also.  I say Java since it runs on most every platform without too
much trouble.

Later,
Rob

> -----Original Message-----
> From: aah@nofs.navy.mil [mailto:aah@nofs.navy.mil]
> Sent: Thursday, June 14, 2001 3:18 PM
> To: tass@listserv.wwa.com
> Subject: Re: file naming
> 
> 
> Well, crud.  It must be Friday or something. :-)
> 9x3 is certainly not what I was aiming for.
> Thanks, Tom, for catching that.
>   So we have:
>      jjjjfxxx.fit
>      
>   where
>     jjjj = last 4 day digits of the Julian Date
>     f    = filter name (bvri)
>     xxx  = sequence number starting at 000
>     
> with files stored in site-named directories.  When copied
> on hard disk, files must either be inserted into equivalent
> site-named directories, or must be named by concatenating
> the site name with the raw file name.
>   Since we are currently at JD2452075, I don't think there is any
> need to worry about rollover in the last 4 digits; we have
> about 8000 days or 20 years before that would happen.
>   The one remaining issue is whether the extension should
> be .fit or .fts.  My preference is .fts, but someone who
> is more familiar with the Micro$oft world might know what
> extensions are most commonly used.  I remember a conflict
> with one of these.
>   The problem with Paul's scheme of using other characters
> in the filter field for designating bias/dark/flat is that
> B for bias is too similar to 'b'.  While the current Mark IV
> systems are only using V & I filters, there are at least
> two future systems that will use B & R.  One could, for
> example, just increment the filter letter by one for flats,
> changing 'bvri' into 'cwsj' and add, say, y for bias and z for
> dark, but that might be getting pretty confusing.  Again, what
> we are identifying here are the raw frames.  Once they are
> processed, you would have to use some unique 'processed'
> identifier.  That is why the 8x3 format with the sequence
> number as the extension is so nice; it frees up three characters
> in the base file name that can be used for such niceties.
> Arne
>