My guess is that you maybe have some leading or trailing spaces in the
direction_ variable.
Try a tabulation of the direction_ variable to see exactly what values are
in your data set.
David Scott
On Thu, 14 Aug 2008, Farley, Robert wrote:
I can't figure out the syntax I need to get subset to work. I'm trying
to split my dataframe into two parts. I'm sure this is a simple issue,
but I'm stumped. I either get all or none of the original "rows".
XTTable <- xtabs( ~ direction_ , SurveyData)
XTTable
direction_
EASTBOUND
345
WESTBOUND
307
EBSurvey <- subset(SurveyData, direction_ == "EASTBOUND" )
XTTable <- xtabs( ~ direction_ , EBSurvey)
XTTable
direction_
EASTBOUND
0
WESTBOUND
0
EBSurvey <- subset(SurveyData, direction_ = "EASTBOUND" )
XTTable <- xtabs( ~ direction_ , EBSurvey)
XTTable
direction_
EASTBOUND
345
WESTBOUND
307
EBSurvey <- subset(SurveyData, direction_ == 1 )
XTTable <- xtabs( ~ direction_ , EBSurvey)
XTTable
direction_
EASTBOUND
0
WESTBOUND
0
Robert Farley
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Voice: (213)922-2532
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_________________________________________________________________
David Scott Department of Statistics, Tamaki Campus
The University of Auckland, PB 92019
Auckland 1142, NEW ZEALAND
Phone: +64 9 373 7599 ext 86830 Fax: +64 9 373 7000
Email: [EMAIL PROTECTED]
Graduate Officer, Department of Statistics
Director of Consulting, Department of Statistics
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