Hi,
I have been attempting to check a new version of the prettyR package,
and have struck a difficult problem. The check fails at the
installation, and when I track the error, it is "Unexpected end of
input" in the xtab function. I have tried a number of things as I
thought that it was a non-printing character (I have had that happen
before). I can paste the entire function into an R session and there
is no error. Has anyone struck an error like this before?
xtab<-function(formula,data,varnames=NULL,or=TRUE,chisq=FALSE,phi=FALSE,
html=FALSE,bgcol="lightgray") {
if(missing(formula))
stop("Usage: xtab(formula,data,varnames=NULL,or=TRUE,chisq=FALSE,phi=FALSE\n")
ft<-as.character(attr(terms(formula),"variables")[-1])
nft<-length(ft)
if(nft>2) {
xt<-list()
by.factor<-as.factor(data[[ft[nft]]])
factor.levels<-levels(by.factor)
factor.labels<-attr(data[,ft[nft]],"value.labels")
if(!is.null(names(factor.labels))) factor.labels<-names(factor.levels)
if(is.null(factor.labels)) factor.labels<-factor.levels
nlevels<-length(factor.levels)
for(i in 1:nlevels) {
currentdata<-subset(data,by.factor==factor.levels[i])
for(j in 1:dim(currentdata)[2])
attr(currentdata[,j],"value.labels")<-attr(data[,j],"value.labels")
currentcount<-length(currentdata[[nft]])
totalcount<-length(data[[nft]])
cat("\nCount for",ft[nft],"=",factor.labels[i],"is",currentcount,
"(",round(100*currentcount/totalcount,1),"%)\n\n")
rightside<-ifelse(nft>3,paste(ft[2:(nft-1)],sep="",collapse="+"),ft[2])
next.formula<-as.formula(paste(ft[1],rightside,sep="-",collapse=""))
xt[[i]]<-xtab(next.formula,data=currentdata,varnames=varnames,chisq=chisq,
phi=phi,html=html,bgcol=bgcol)
}
}
else {
if(missing(data)) xt<-calculate.xtab(get(ft[1]),get(ft[2]),varnames=varnames)
else xt<-calculate.xtab(data[,ft[1]],data[,ft[2]],varnames=varnames)
}
attr(xt,"class")<-"xtab"
return(xt)
}
Thanks for any pointers.
Jim
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