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resultdf
2010 Sep 09
0
Fast / dependable way to "stack together" data frames from a list
...y() in the plyr package. The following is the same
## idea as do.call(rbind, l), only faster."
library("plyr")
resultDF5 <- ldply(mylist, rbind)
all.equal(resultDF, resultDF5)
## Plyr author Hadley Wickham followed up with "I think all you want
here is rbind.fill:"
resultDF6 <- rbind.fill(mylist)
all.equal(resultDF, resultDF6)
## Gabor Grothendieck noted that if the elements in mylist were
matrices, this would all work faster.
mylist2 <- lapply(mylist, as.matrix)
matrixDoCall <- do.call("rbind", mylist2)
all.equal(as.data.frame(matrixDoCall), r...