MattNapsAlot/bigDataFrame — Issue #10: Converting storage mode doesn't work right
Author: MattNapsAlot
Created: 2011-12-29 19:37:23+00:00
State: open

'''R
> system.time(dd <- read.delim('expression_VALUE.txt', as.is=T))
user system elapsed
45.635 0.612 46.254
Loading required package: bigDataFrame
> system.time(x <- BigDataFrame(data=dd))
user system elapsed
43.011 5.188 58.493
> system.time(dd2 <- x[])
Error in storage.mode(dd[, i]) <- classes[i] :
invalid to change the storage mode of a factor
'''