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combine <- function(..., names=NULL)
{
tmp <- list(...)
if(is.null(names))
names <- names(tmp)
if(is.null(names))
names <- sapply(as.list(match.call()), deparse)[-1]
if(any(sapply(tmp, is.matrix) | sapply(tmp, is.data.frame)))
{
len <- sapply(tmp, function(x) c(dim(x),1)[1])
len[is.null(len)] <- 1
data <- rbind(...)
}
else
{
len <- sapply(tmp,length)
data <- unlist(tmp)
}
namelist <- factor(rep(names, len), levels=names)
return(data.frame(data, source=namelist))
}
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