cpcol | R Documentation |
cpcol
copies columns in a data frame.
cpcol(d, on, nn, i = NULL,
regexp = FALSE, multi = FALSE)
d |
data frame |
on |
original column name (or part of it, or a regexpr) |
nn |
desired column name (or part of it, or a regexpr) |
i |
optional column index that must match the column with the name
denoted by |
regexp |
logical flag indicating whether |
multi |
logical flag indicating whether to change multiple coumns at once |
Tomas Sieger
rencol
tmp<-data.frame(a=1:2,b=2:3)
cpcol(tmp,'a','a2')
# copy with explicit column idx check
cpcol(tmp,'a','a2',1)
# copy all columns starting with 'a.' as 'b.'
tmp<-data.frame(a.x=1:2,a.b=2:3)
cpcol(tmp,'a.','b.',multi=TRUE)
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