Hello Nils,
it could be that the missing values are not exactly Stata's missing
codes (say they fall _between_ (.) and (.a). They are considered
missing, but not equal to (.). I guess a formal name for these is .a_
Try:
format v25 %21x
format v25 %16L // (Windows)
to see what are the exact values stored in the variable and whether
they correspond to Stata's expectations.
Best regards,
Sergiy Radyakin
On 1/9/08, Drews Nils <[email protected]> wrote:
> Dear all,
>
> I have trouble with missing values with a variable which was created with SAS. For some reason the missing values do not seem to be the system missing value, but I cant figure what the value actually is, see log below. Has anyone an idea what I am overlooking? Why do I get "no observations" when I type "tab v25 if v25 == ., mis"?
>
> Thanks,
>
>
> Nils
>
>
>
> . use v25
>
> . li in 1013926/1013930
>
> +----------+
> | v25 |
> |----------|
> 1013926. | .3333333 |
> 1013927. | .8009968 |
> 1013928. | . |
> 1013929. | .6666665 |
> 1013930. | .786561 |
> +----------+
>
> . tab v25 if v25 == ., mis
> no observations
>
> . tab v25 if v25 >= ., mis
>
> frauenant. | Freq. Percent Cum.
> ------------+-----------------------------------
> . | 310,286 100.00 100.00
> ------------+-----------------------------------
> Total | 310,286 100.00
>
> . d v25
>
> storage display value
> variable name type format label variable label
> -------------------------------------------------------------------------------
> v25 float %9.0g frauenant.
>
> *
> * For searches and help try:
> * http://www.stata.com/support/faqs/res/findit.html
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
>
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
