Advanced R Tutorial – Use SDcols In data.table

Category - R

SDcols is an useful but tricky method in data.table. The statement of it is hard to remember, so I wrote down some examples, copyi...

R Tutorial – Source Function Files With Local Attributes

If you are building your own modules or called codebase, it is common to split some huge functions as independent files. In other ...

data.table is a popular library in R, powerful, efficient. But the join/merge syntaxes in data.table are not so straightforward.Th...