Roger O wrote:

> On Jul 8, 6:08*pm, Robert Heller <hel...@deepsoft.com> wrote:
>...
> involve 50 kilometers of images (continuous, with 1.6mm per pixel
> resolution). ... individual JPEG2000 images ... are chunked into images of
a
> couple of meters in length, which are analyzed, ...

Wow!
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While there is very good advice given in this thread, there is one more
thing you could look into:

Make sure your filehandle does not start with an "e":
Your
> set FileDesc [string trimleft $FileHandle file]
makes an filee12abcdef into 12abcdef
It is much better to use
set FileDesc [string range $FileHandle 4 end]

man n string
--
Mit freundlichen Grüßen (best regards)

Albrecht Mucha
Software Entwicklung
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