Hi all,
I am just wondering if there is a more efficient way of merging two large
datasets based on the values of multiple columns, some of which are not
numerical.
The default merge function in dataframe is very inefficient and the merge
function in data.table seems to be faster, but it does not seem to allow
keys that are not numerical in nature.
Any other suggestion?
Thanks a lot!
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
