[R] #Keeping row names when using as.data.frame.matrix

[Tim]

#question I have the following data set:

Date<-c("9/7/2010","9/7/2010","9/7/2010","9/7/2010","9/7/2010","9/7/2010","9/8/2010")

EstimatedQuantity<-c(3535,2772,3279,3411,3484,3274,3305)

ScowNo<-c("4001","3002","4002","BR 8","4002","BR 8","4001")

dataset<- data.frame(EstimatedQuantity,Date,ScowNo)

#I'm trying to convert the data set into a contingency table and then back
into a regular data frame:

        
xtabdata<-as.data.frame.matrix(xtabs(EstimatedQuantity~Date+ScowNo,data=dataset),
         row.names=(dataset$Date),optional=F)

#I'm trying to keep the row names (in xtabsdata) as the dates.
#But the row names keep coming up as integers.
#How can I preserve the row names as dates when
#the table is converted back to a data frame?




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