Displaying 2 results from an estimated 2 matches for "lessr".
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2017 Jun 21
4
selecting dataframe columns based on substring of col name(s)
...AS, for example). Heuristically, something like:
piece <- df[,col2:col4]
where the heuristic col2:col4 is interpreted as col2 -> col4 (parse the
prefix 'col', and then simply select over the changing suffic -- i.e.,
column number).
Now, if I use the "to" function in the lessR package, I can get there
from here fairly easily:
piece <- d[,to("col",4,from=2,same.size=FALSE)]
But, is there a better way? Beyond 'efficiency' (ease of
implementation), part of what constitutes 'better' might be something in
base R, rather than relying on a pack...
2017 Jun 21
0
selecting dataframe columns based on substring of col name(s)
...lly, something like:
>
> piece <- df[,col2:col4]
>
> where the heuristic col2:col4 is interpreted as col2 -> col4 (parse the prefix 'col', and then simply select over the changing suffic -- i.e., column number).
>
> Now, if I use the "to" function in the lessR package, I can get there from here fairly easily:
>
> piece <- d[,to("col",4,from=2,same.size=FALSE)]
>
> But, is there a better way? Beyond 'efficiency' (ease of implementation), part of what constitutes 'better' might be something in base R, rather than...