On Sat, Feb 16, 2002 at 10:32:51AM +1000, Alan Davis wrote:
> I've bogged down on trying to convert a graphics file with a .tif
> extension.  All the usual graphics viewers say this is not a .tiff
> file.  [EMAIL PROTECTED]:~$ file PigBladAnotZ.tif PigBladAnotZ.tif:
> AppleSingle encoded Macintosh file

If "file" says so, it's probably true. TIFF's have a "magic number",
so they're pretty easy to identify.

> I have tried several approaches, but none have gotten me closer to
> understanding the issues; much less convert the file.  This is, I
> believe, a multiple layer image from a confocal laser scanning
> microscope.  

You'll have to find something to decode the file first, so it is
actually in the TIFF format.  Then worry about something that
can read it.  If it's more than three bands (not including alpha)
you're likely to need something more than standard graphics
image processing tools.  You might find "tiffsplit" in the
libtiff-tools package useful as a preprocess step.

> Can someone on this list help me to understand what the format is all
> about, and what I can do to convert?  Perhaps I have other options,
> once I figure out what the issues are.  Apparently, the issues involve
> not only the format, but the filesystem structure?

Sounds like the file is just encoded in a weird Apple encoding.
Probably has a resource fork in there with the actual data file.  Just
try to find a decoding tool (or a friend with a Mac).

-- 
Eric G. Miller <egm2@jps.net>

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