Hello all,
I apologize for a terribly simple question. I'm used to using Stata and am
trying to `switch' over to R.
I would like to recode a vector in a data frame when the value of it meets the
following condition: if (dataframe$factor=='3'){dataframe$thevector<-(an
arithmetic mean). What I would like to result is the creation of a new
variable within the data frame for which all observations that =='3' get the
mean. Yet, I receive an error message that R is only reading the first element
of the factor:
Warning message:
In if (nes2004$Rrace2 == "1") { :
the condition has length > 1 and only the first element will be used
As the command in question actually appears:
if (nes2004$Rrace2=='3') {
nes2004$Hethno<-(((nes2004$Hint-nes2004$Wint)+(nes2004$Hint-nes2004$Bint)+(nes2004$Hint-nes2004$Aint)+(nes2004$Hwork-nes2004$Wwork)+(nes2004$Hwork-nes2004$Bwork)+(nes2004$Hwork-nes2004$Awork)+(nes2004$Htrus-nes2004$Wtrus)+(nes2004$Htrus-nes2004$Btrus)+(nes2004$Htrus-nes2004$Atrus))/9)
}
The other problem here too, is that each of these variables contain varying
counts of NA observations.
I've tried to work around this by using ifelse, and other commands, but I can
not figure out where to begin re-thinking how I do this. Any guidance would be
appreciated.
Thank you.
Whitt
****************************************
H. Whitt Kilburn, Ph.D.
Assistant Professor
Grand Valley State University
Political Science Department
1124 AuSable Hall
1 Campus Drive
Allendale, MI 49401-9403
Phone:(616) 331-8831
Fax:(616) 331-3550
http://faculty.gvsu.edu/kilburnw
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