reshape "Error in data[, timevar] : incorrect number of dimensions"
Try str(svy) and see what formats the seperate variables have. It may give you a clue as to what is happening. An alternative approach is to see if the reshape package can help you. See See http://had.co.nz/reshape for more information on the package.
--- On Sat, 9/27/08, Keith Schnakenberg <keith.schnakenberg at gmail.com> wrote:
From: Keith Schnakenberg <keith.schnakenberg at gmail.com>
Subject: [R] reshape "Error in data[, timevar] : incorrect number of dimensions"
To: r-help at r-project.org
Received: Saturday, September 27, 2008, 4:57 PM
I have two waves of a survey given to students at various
middle
schools and high schools, with student id numbers for each
student. I
am having difficulty reshaping the file from long to wide.
My code is below:
library(foreign)
svy <- read.spss("studsur4.SAV")
svy.wide <- reshape(svy, timevar="WAVE",
idvar="id", direction="wide")
"id" is the student identification number, and
"WAVE" takes values 1
and 2. I get the following error:
Error in data[, timevar] : incorrect number of dimensions
I would provide reproducible code but I can't reproduce
the error
with any other data. I would appreciate any conjectures as
to why
this is happening.
Thanks,
Keith
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