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Re: st: RE: new reshape command compatibility issue


From   "James Muller" <james.s.muller@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: new reshape command compatibility issue
Date   Mon, 25 Aug 2008 14:05:21 -0400

Excellent, my hat off-

Thanks!

James


On Mon, Aug 25, 2008 at 1:51 PM, Kevin Crow <kcrow@stata.com> wrote:
> James Muller <james.s.muller@gmail.com> reported that the
> August 11, 2008 update of the -reshape- command no longer allows
> variable names longer than 20 characters when reshaping from wide
> to long.  He is correct.  The fix for this bug will be released
> in the next ado-file update -- tomorrow or by Wednesday at the
> latest.
>
> Kevin Crow
> StataCorp
>
>> If the program also uses current features of Stata then version
>> statements would have to be splattered all over the place. More
>> involved than globally replacing "reshape" with "reshape_10".
>>
>> I should note this is a general post, not specific to my own problem.
>>
>> The issue I'm trying to underline is that the current version of
>> -reshape- does not handle variables named longer than 20 characters.
>> This is a severe limitation that will cause many existing programs to
>> fail. The best solution is to reprogram the current -reshape- program
>> without this constraint.
>>
>> Who maintains reshape? Statacorp?
>>
>> James
>>
>>
>>
>>
>>
>> On Mon, Aug 25, 2008 at 11:18 AM, Martin Weiss
>> <martin.weiss@uni-tuebingen.de> wrote:
>>>
>>> Would a -version- statement not be easier?
>>>
>>> -----Original Message-----
>>> From: owner-statalist@hsphsun2.harvard.edu
>>> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of James Muller
>>> Sent: Monday, August 25, 2008 5:06 PM
>>> To: statalist@hsphsun2.harvard.edu
>>> Subject: st: new reshape command compatibility issue
>>>
>>> Hi list,
>>>
>>> A new major version of reshape was released, but it imposes a restriction
>>> on
>>> the maximum length of variables it can reshape (at least from
>>> wide->long).
>>> Specifically, reshape fails on variables with names longer than 20
>>> characters.
>>>
>>> I realized this when it caused a large (a couple of thousand do-files
>>> involved) system to fail...
>>>
>>> There's a quick solution, but it sucks. The old reshape command is still
>>> available as the command reshape_10. The solution is to replace all
>>> reshape
>>> command calls with reshape_10. It is a shame 'reshape' is also a word in
>>> natural
>>> language.
>>>
>>> Under the hood, reshape obtains details of the variables via the 'char'
>>> system (?), which creates variables describing variables from your
>>> dataset,
>>> prefixing them... That is, the dataset variable name plus the prefix can
>>> violate Stata's 32-character variable name limit.
>>>
>>> I ask, is there the possibility of thes very important Stata command,
>>> reshape,
>>> being modified so that it can accept variable named according to the
>>> general
>>> convention in Stata?
>>>
>>> As I say, there is the option of using reshape_10, but, well, that's a
>>> lazy
>>> solution.
>>>
>>> Cheers
>>>
>>> James
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>>
>
>
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