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Size of .mx files

• To: mathgroup at smc.vnet.net
• Subject: [mg65221] Size of .mx files
• From: kalymereau at yahoo.fr
• Date: Sat, 18 Mar 2006 06:40:44 -0500 (EST)
• Sender: owner-wri-mathgroup at wolfram.com

Hi Group

I have a list of complicated expressions that I save in a .mx file. The
size of this file is about 1.3Mb

Since I had to exchange these expressions with a colleague who is
working on a different system, I have also exported these expressions
to a text file (with Save) that takes about 2.5 Mb. If I read the text
file with Get and if I resave the expressions with DumpSave I get a
second .mx file that is now 6.3Mb !

This is not very important since I checked that the two different .mx
files contain the very same expressions, but I would like to understand
why the sizes are so different ?

I have also observed that redoing again the same .mx->text->.mx
procedure from the 6.3Mb file I get a third file of the same size
(6.3Mb) ! So the first file seems to be peculiar but I don't know why.

Thanks