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Re: CompressedData in Buttons

• To: mathgroup at smc.vnet.net
• Subject: [mg120592] Re: CompressedData in Buttons
• From: John Fultz <jfultz at wolfram.com>
• Date: Sat, 30 Jul 2011 06:01:20 -0400 (EDT)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com
• Reply-to: jfultz at wolfram.com

On Fri, 29 Jul 2011 08:02:39 -0400 (EDT), A Retey wrote:
> Hi,
>
>> I have some Buttons that display various data, e.g., area,
>> population, density, etc. of U.S. states, and would like to update
>> the data. I have only the buttons, not the Input code that produced
>> them long ago. Using Show Expression on the button reveals that,
>> instead of being in List form, much of the data appears as
>> "CompressedData[ ... (gibberish) ...].
>>
>> How can I recover the original, uncompressed, data so that I can
>> revise it? I found nothing in the Documentation Center or Virtual
>> Book, and none of the  74 hits on wolfram.com appear to shed any
>> relevant light.
>>
> I think you will just need to apply Uncompress to the "glibberish",
> which should be a string. If you have the CompressedData[..] as an
> expression, you can convert the compressed part with:
>
> CompressedData["..."] /. Verbatim[CompressedData][s_String] :>
> Uncompress[s]
>
> hth,
>
> albert

Actually, the symbol CompressedData is just an alias for Uncompress.  So simply evaluating the CompressedData expression in a kernel would work.

Sincerely,

John Fultz
jfultz at wolfram.com
User Interface Group
Wolfram Research, Inc.