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Re: st: forvalues


From   Nick Cox <njcoxstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: forvalues
Date   Tue, 23 Oct 2012 14:20:08 +0100

You are ignoring the comment made now to you directly at least three
times on this list that you are expected to use your real name on this
list.

In your own best interests please find out _now_ how to show your real
name in people's inboxes.

That said, what you are asking is covered by an FAQ.

FAQ     . . . . . . . . . . Making foreach go through all values of a variable
        . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  N. J. Cox
        8/05    Is there a way to tell Stata to try all values of a
                particular variable in a foreach statement without
                specifying them?
                http://www.stata.com/support/faqs/data-management/
                try-all-values-with-foreach/



Nick

On Tue, Oct 23, 2012 at 2:15 PM, - <dimpol7@googlemail.com> wrote:
> Thank you for this,
> it is working now using levelsof, as I wrote above, but I will try
> your suggestion as well.
>
> thanks again
>
> On 23 October 2012 14:11, Nick Cox <njcoxstata@gmail.com> wrote:
>> dimpol7 asked what he or she is doing wrong.
>>
>> First off, as already pointed out to dimpol7, we ask for full real
>> names on Statalist. See my posting replying to dimpol7 on 12 October.
>>
>> Second off,
>>
>> forvalues i = 1/53 {
>>         tabstat age if single=='i', by(sexcat) stats(mean sd n min max
>> median p10 p25 p75 p90)
>> }
>>
>> will fail if there are _any_ value of -single- in 1/53 for which there
>> are no observations. Stata is disagreeing with you on that, but all my
>> money is on Stata being right and you being wrong here.
>>
>> I suggest that you try
>>
>> di "`i'"
>> capture noisily tabstat age if single=='i', by(sexcat) stats(mean sd n
>> min max median p10 p25 p75 p90
>>
>> A line displaying which value this is going to be needed to
>> distinguish the tables. -capture noisily- will proceed past any
>> errors.
>>
>> Nick
>>
>>
>> On Tue, Oct 23, 2012 at 1:14 PM, - <dimpol7@googlemail.com> 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?
>>
>> *
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>
> *
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