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RE: st: How to label the value 999999999999


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: How to label the value 999999999999
Date   Wed, 8 Oct 2008 12:05:51 +0100

I agree with Sergiy. Your best bet may be to replace 999999999999 with a
smaller number and then use a value label. 

What appears to be happening is a little curious. My interpretation
matches that of Sergiy: 999999999999 is being grabbed by Stata and
stored as a floating point number. I don't think -label- ever sees a
exact integer. Whether there is an upper limit to integers to which
labels can be attached I don't know, but that does not appear to be the
issue. 

It is not as though Stata can not do exact integer arithmetic with
integers this size, because it can. You can put 999999999999 in a
-double- variable and do that, but you will need to use a suitable
-format- for the results to be visible. 

Nick 

Sergiy Radyakin

Stata does not allow having labels defined for floating-point values.
Value 999999999999 is stored as a fp value.
Hence there is no way to have a value 999999999999 with a label in
Stata.

This is possible in SPSS, since it allows labeling any 8 bytes of data.

In Stata only integers and extended missings may have labels, but not
FP-values or strings.

I would suggest you replace 999999999999 with, say -9999 and have a
label:
label define m -9999 "[999999999999] no response"

or save the original 999999999999 value somewhere in the _notes_


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