Displaying 1 result from an estimated 1 matches for "mysplitvar".
2009 Dec 08
1
problem with split eating giga-bytes of memory
...t is not. instead, when I try to split selectSubAct.df on one
of its factors with 1473 levels, my memory is slowly gobbled up (plus 3 GB
of swap) until I cancel the operation.
Any ideas on what might be happening? Thanks, Mark
myDataFrame <- data.frame(matrix(LETTERS, ncol = 7, nrow = 399000))
mySplitVar <- factor(as.character(1:1400))
myDataFrame <- cbind(myDataFrame, mySplitVar)
object.size(myDataFrame)
## 12860880 bytes # ~ 13MB
myDataFrame.split <- split(myDataFrame, myDataFrame$mySplitVar)
object.size(myDataFrame.split)
## 144524992 bytes # ~ 144MB
object.size(selectSubAct.df)
## 52,3...