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Re: st: Fwd: how to use the label of oldvar to name newvar


From   Nick Cox <njcoxstata@gmail.com>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: Fwd: how to use the label of oldvar to name newvar
Date   Mon, 15 Apr 2013 00:49:06 +0100

Not necessary. You can -collapse- with its -by()- option.
Nick
njcoxstata@gmail.com


On 14 April 2013 22:21, anne broe <annebroe@gmail.com> wrote:
> To be able to make a prevalence for each drug using collapse (sum)
>
>
> 2013/4/14 Nick Cox <njcoxstata@gmail.com>:
>> Why do (you think) you need 40 new variables?
>> Nick
>> njcoxstata@gmail.com
>>
>>
>> On 14 April 2013 20:07, anne broe <annebroe@gmail.com> wrote:
>>> I have tried to egen, group option with the label, and that ends up
>>> with the same problem as when I just use the encode option.
>>>
>>> My data looks like this
>>>
>>> atc
>>> "aaabbc01"
>>> "aaabcc02"
>>> "aaabbc04"
>>> "bbbcdd01"
>>> etc (40 different total)
>>>
>>> When I use encode atc, gen(n_atc) it becomes
>>> n_atc
>>> 1        with value label "aaabbc01"
>>> 2        with value label "aaabcc02"
>>> 3        with value label "aaabbc04"
>>> etc
>>>
>>> Then I have used gen atc_`xx' = 1 if n_atc==`xx'                //xx
>>> being the values of n_atc (1-40)
>>> But instead of atc_xx I would like my 40 new variables to be named
>>> after the original string values e.g. the first var will then be named
>>> "aaabbc01"
>>>
>>> hope you can help me :)
>>>
>>> 2013/4/14 Nick Cox <njcoxstata@gmail.com>:
>>>> Alternatively, you may just be missing out on -egen, group()- with the
>>>> -label()- option.
>>>> Nick
>>>> njcoxstata@gmail.com
>>>>
>>>>
>>>> On 14 April 2013 14:34, Nick Cox <njcoxstata@gmail.com> wrote:
>>>>> When you say "the label" are you referring to value labels or variable labels?
>>>>>
>>>>> Can you give an equivalent example with a dataset we can all access e.g.
>>>>>
>>>>> sysuse auto
>>>>> Nick
>>>>> njcoxstata@gmail.com
>>>>>
>>>>>
>>>>> On 14 April 2013 14:29, anne broe <annebroe@gmail.com> wrote:
>>>>>> Dear all
>>>>>>
>>>>>> I am encoding a string var atc to a numeric var n_atc to enable the
>>>>>> use of forvalues.
>>>>>> In each loop i generate a newvar called atc_`xx' if atc== `xx' and
>>>>>> collapse (sum) of this variable.
>>>>>> My problem however that instead of atc_`xx' I would like the variable
>>>>>> to be named after the original string var atc which equals the label
>>>>>> of n_atc.
>>>>>>
>>>>>> Is there anyway you can use the `xx' to identify to variable and then
>>>>>> name it after the label?
>>>>>>
>>>>>> Hope someone can help me
>>>>>> Thanks
>>>>>> Anne
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