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Re: st: How to re-program -save9- for Stata 13?


From   Sergiy Radyakin <serjradyakin@gmail.com>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: How to re-program -save9- for Stata 13?
Date   Tue, 15 Oct 2013 22:40:03 -0400

Jeph,
I agree that such version-controlled behavior is reasonably expected,
and no, Stata will not save the dataset in the 'pre-previous' format
even under version control. Stata N it will save in N-1, but not in
N-2 format (format here is specification e.g. 113, not Stata version,
e.g. 10). There was also a discussion somewhere in the statalist of
why Stata itself does not autodetect the lowest necessary format to
store the data without any loss. But for some reason I can't find this
thread.

Best, Sergiy Radyakin.

On Tue, Oct 15, 2013 at 8:53 PM, Nick Cox <njcoxstata@gmail.com> wrote:
> Haven't tried it, but I think not.
>
> 0. Most fundamentally, a switch allowing you to use older code cannot
> work because there is no way that the older code could understand
> version 13 datasets. Understanding version 9 datasets is necessary but
> not sufficient.
>
> 1. I believe that it would be publicised if it worked.
>
> 2. The help for -version- does spell out what -version- does, and it
> is very selective.
>
> Nick
> njcoxstata@gmail.com
>
>
> On 16 October 2013 01:37, Jeph Herrin <stata@spandrel.net> wrote:
>> Given the first FAQ linked to below, one wonders if -version- applies to
>> -saveold-? I don't have a way to test it, but in theory one should be able
>> to use
>>
>> . version 10
>> . saveold file
>>
>> to get a version 9 file, say, from version 13.
>>
>> J
>>
>>
>> -----Original Message-----
>> From: owner-statalist@hsphsun2.harvard.edu
>> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Sergiy Radyakin
>> Sent: Tuesday, October 15, 2013 8:47 AM
>> To: statalist@hsphsun2.harvard.edu
>> Subject: Re: st: How to re-program -save9- for Stata 13?
>>
>> Hello Marco,
>>
>> could you please explain a bit, why you see a need for such a program?
>> If you have Stata 13, this means you can use -saveold- to save in the
>> previous version, then following this FAQ all the way until version 5 if
>> necessary:
>> http://www.stata.com/support/faqs/data-management/save-for-previous-version/
>>
>> If you don't have Stata 13, then you use -use13- to load the data into Stata
>> 10 or later.
>> http://radyakin.org/transfer/use13/use13.htm
>>
>>
>> So I see potential clients as:
>> 1) people having Stata 9 and no access to newer versions;
>> 2) people having non-Stata software that can read dta format of 9, but not
>> newer and the software is not going to be updated, and there is no access to
>> Stata 10+
>>
>> Regarding 1) I was told the # is pretty small, but I don't know what 'small'
>> really is. Regarding 2) I am interested in what is out there (regardless
>> whether maintained or not). Can we have a headcount of the programs that
>> directly read Stata datasets? Let me start:
>> ADePT v.5.50.5001.23617 (supports data from Stata 8 to 13) ADePT Map v2
>> (supports data from Stata 8-11) R (with package foreign) (supports data from
>> Stata 5 to 12) SPSS v.15+ (supports data from Stata X?X to 9?) Stat/Transfer
>> (supports data from any version of Stata) etc.
>>
>> Regarding the implementation it is not at all difficult: the current code of
>> use13 and use10 contains all the necessary procedures to implement save9
>> which I can do if there is any significant demand.
>>
>> Best, Sergiy Radyakin
>>
>>
>>
>> On Mon, Oct 14, 2013 at 8:54 AM, Marco Ercolani <m.g.ercolani@bham.ac.uk>
>> wrote:
>>> Dear Statalisters,
>>>
>>> I am asking for suggestions on how I can re-program -save9- so that it
>> will work in Stata 13.
>>> In other words, so it will save data in a Stata 9 format from within Stata
>> 13.
>>> I can think of two possible strategies to achieve this within Stata 13:
>>>
>>> Strategy 1: Edit the contents of the dataset so they conform to Stata
>>> 9 protocols, save the file, then edit the the file header so that it
>> appears to have been saved by Stata 9.
>>>
>>> Strategy 2: Use an existing save facility in Stata 13 that would allow
>>> me to impose limits on the data so it respects Stata 9 protocols. Does
>> such a save facility exist?
>>>
>>> Any help on the above two approaches or helpful suggestions for a "third
>> way" would be welcome.
>>>
>>>  Marco Ercolani
>>>  Department of Economics
>>>  University of Birmingham
>>>
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