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Re: st: forvalues


From   - <dimpol7@googlemail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: forvalues
Date   Tue, 23 Oct 2012 13:45:32 +0100

Thank you,
there was no problem in the dataset, the "single" variable is made up
of integers between 1 and 53.
Because I tried lots of different things, it seemed to have a problem
with using " forvalues i = ....", without declaring anything first,
and similarly when I was trying to give the value of i to the "single"
variable in the "if(single=='i')" expression.
Eventually I was able to get it to work by writing the following:

. levelsof single, local(singles)
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
28 29 30 31 32 33 34 35 36 38 39 42 43 49 50 51 53:  this was output

. foreach single in `singles' {
  2. tabstat agein2009 if(single==`single'), by(sexcat) stats(mean sd
n min max median p10 p25 p75 p90)
  3. }

Then I got the output of the tables I need, iteratively, for each
value of "single".

Thank you for helping.


On 23 October 2012 13:20, Henrik Støvring <STOVRING@biostat.au.dk> wrote:
> ...which sounds like a problem of the dataset, not of the code. Try a
> codebook of the variable -single- to see what values, it actually contains:
>
> codebook single
>
> -Henrik
>
> On 10/23/2012 02:14 PM, - wrote:
>> It still won't do it, it says "no observations", but there are
>> observations there...
>>
>> On 23 October 2012 13:09, Henrik Støvring <STOVRING@biostat.au.dk> wrote:
>>> Your accents are off. You need to replace 'i' with `i' - note the
>>> difference in the first accent.
>>>
>>> Best,
>>>
>>> Henrik
>>>
>>> On 10/23/2012 02:04 PM, - wrote:
>>>> hello all,
>>>> I'm trying to build a simple loop, and have looked at Help for
>>>> "foreach" and "forvalues", but can't get it to work. I just want to
>>>> set a variable i to take consecutive values from 1 to 53, so use
>>>> forvalues i=1/53, then give its value to a variable in my data called
>>>> "single" (refers to the number of samples for each person) which has
>>>> integer values ranging from 1 to 53, and create tables of statistics
>>>> for age in men and women. So there would be 53 tables of ages, one for
>>>> each number of samples, summarized by sex.
>>>> Haven't use loops in stata before, I write:
>>>>
>>>> forvalues i = 1/53 {
>>>>     2. tabstat age if(single=='i'), by(sexcat) stats(mean sd n min max
>>>> median p10 p25 p75 p90)
>>>>     3. }
>>>>
>>>> but the message is that 'i' is an invalid name. If I use
>>>> if(single==i), it says "i not found". Can anyone tell me what I'm
>>>> doing wrong?
>>>>
>>>> Thank you all
>>>> *
>>>> *   For searches and help try:
>>>> *   http://www.stata.com/help.cgi?search
>>>> *   http://www.stata.com/support/faqs/resources/statalist-faq/
>>>> *   http://www.ats.ucla.edu/stat/stata/
>>>>
>>> --
>>>
>>> *Henrik Støvring, PhD*
>>> Associate professor
>>> stovring@biostat.au.dk
>>> Phone +45 8716 7991
>>> Fax +45 8716 7305
>>> Web: au.dk/en/stovring@biostat <http://au.dk/en/stovring@biostat>
>>>
>>>
>>>
>>> Department of Public Health
>>> Biostatistics
>>> University of Aarhus
>>> Bartholins Allé 2, Bldg 1261, 217
>>> DK-8000 Aarhus C
>>> Denmark
>>>
>>>
>>> Department of Public Health, Aarhus University
>>>
>>> *
>>> *   For searches and help try:
>>> *   http://www.stata.com/help.cgi?search
>>> *   http://www.stata.com/support/faqs/resources/statalist-faq/
>>> *   http://www.ats.ucla.edu/stat/stata/
>> *
>> *   For searches and help try:
>> *   http://www.stata.com/help.cgi?search
>> *   http://www.stata.com/support/faqs/resources/statalist-faq/
>> *   http://www.ats.ucla.edu/stat/stata/
>>
>>
>
> --
>
> *Henrik Støvring, PhD*
> Associate professor
> stovring@biostat.au.dk
> Phone +45 8716 7991
> Fax +45 8716 7305
> Web: au.dk/en/stovring@biostat <http://au.dk/en/stovring@biostat>
>
>
>
> Department of Public Health
> Biostatistics
> University of Aarhus
> Bartholins Allé 2, Bldg 1261, 217
> DK-8000 Aarhus C
> Denmark
>
>
> Department of Public Health, Aarhus University
>
> *
> *   For searches and help try:
> *   http://www.stata.com/help.cgi?search
> *   http://www.stata.com/support/faqs/resources/statalist-faq/
> *   http://www.ats.ucla.edu/stat/stata/

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/faqs/resources/statalist-faq/
*   http://www.ats.ucla.edu/stat/stata/


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