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Re: st: RE: problem converting a string variable to a numeric variable


From   Donald Spady <dspady@ualberta.ca>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: problem converting a string variable to a numeric variable
Date   Thu, 25 Apr 2013 15:05:20 -0600

I think all of the listserver wonders that.
Don
On 2013-04-25, at 2:23 PM, Gwinyai Masukume <parturitions@gmail.com> wrote:

> Many thanks Nick.
> Do you sleep? Just kidding.
> Kind regards,
> Gwinyai
> 
> On 4/25/13, Nick Cox <njcoxstata@gmail.com> wrote:
>> For one overview of this territory see
>> 
>> SJ-2-3  pr0006  . . . . . . . . . . . . Speaking Stata: On numbers and
>> strings
>>        . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  N. J.
>> Cox
>>        Q3/02   SJ 2(3):314--329                                 (no
>> commands)
>>        explains the use of numeric and string data types in Stata
>>        and how to convert from one kind to another
>> 
>> See http://www.stata-journal.com/sjpdf.html?articlenum=pr0006 for
>> accessible .pdf.
>> 
>> It's slightly out-of-date (-tostring- became an official command after
>> that paper) but the main ideas still apply.
>> 
>> Nick
>> njcoxstata@gmail.com
>> 
>> 
>> On 25 April 2013 19:50, Gwinyai Masukume <parturitions@gmail.com> wrote:
>>> Thanks Elan.
>>> Kind regards,
>>> Gwinyai
>>> 
>>> On 4/25/13, Cohen, Elan <cohened@upmc.edu> wrote:
>>>> -encode- is the wrong command for this job.  (Read the help file more
>>>> closely to understand why.)
>>>> 
>>>> Try -destring-.
>>>> 
>>>> - Elan
>>>> 
>>>> 
>>>> -----Original Message-----
>>>> From: owner-statalist@hsphsun2.harvard.edu
>>>> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Gwinyai
>>>> Masukume
>>>> Sent: Thursday, April 25, 2013 13:18
>>>> To: statalist
>>>> Subject: st: problem converting a string variable to a numeric variable
>>>> 
>>>> Dear Stata listers,
>>>> 
>>>> I have a variable weight. The original dataset has weight as a string
>>>> variable. Type - str13
>>>> Format - %13s.
>>>> 
>>>> encode weight, generate(weightgrams)
>>>> 
>>>> The above code apparently creates a numeric variable weightgrams.
>>>> Type - long
>>>> Format - %13.0g
>>>> 
>>>> However when dealing with this new variable e.g summ weightgrams, I get
>>>> completely abnormal results which bear no resemblance to the expected
>>>> results for the variable weight.
>>>> 
>>>> I suspect there is some kind of error in conversion from a string to
>>>> numeric variable.
>>>> 
>>>> I am using version 12.1
>>>> 
>>>> Kind regards,
>>>> Gwinyai
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Donald Spady

--
dspady@ualberta.ca




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