Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
st: Collapse error: "Factor variables not allowed"
From
Lynne Morgan <[email protected]>
To
[email protected]
Subject
st: Collapse error: "Factor variables not allowed"
Date
Tue, 11 Dec 2012 10:27:19 -0600
Hi All,
I have a dataset that I need to collapse by the id number because each
ID has several rows (hhidnum). Mostly I just want to know the sum,
because the variables are if a condition is present or absent (1/0) in
the various rows for each ID. Here is the code that I run:
*Collapse by HHID
collapse (sum) segmentnum SBE_SEGLEN SBE_1A SBE_1B SBE_1C SBE_1D
SBE_1E SBE_1F ///
diSBE_12A diSBE_12B diSBE_12C diSBE_12D diSBE_12E diSBE_12F
diSBE_12G diSBE_12H ///
SBE_11A SBE_11B SBE_11C SBE_11D SBE_11E littersmall litterhaz ///
(mean) meanmph=SBE_5A meanlanes=SBE_7A ///
by(hhidnum) cw
The error I get, though, is "factor variables not allowed". What does
this mean? How do I get around it?
Thanks so much!
--
Lynne Morgan, MPH
Assistant Researcher
Survey of the Health of Wisconsin
University of Wisconsin, Madison
(e) [email protected]
(p) 608-821-1243
*
* 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/