[Rd] Reading many large files causes R to crash - Possible Bug in R 2.15.1 64-bit Ubuntu
Brian G. Peterson
brian at braverock.com
Mon Jul 23 19:58:18 CEST 2012
On 07/23/2012 11:49 AM, David Terk wrote:
> One quick question regarding a call to as.character.POSIXt. When using
> scan, since scan reads line by line, would it make sense to have the ability
> to perform a char -> POSIXct conversion on each line that is read, rather
> than after all lines have been read? Perhaps this already exists somewhere
> and I am not aware of it.
It's actually much faster to load everything into memory and then
convert it all to xts at once. as.POSIXct will work on a vector to
create your index, this s better than calling it millions of times, once
for each row.
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