subset.ff: Subsetting a ff vector or ffdfdata frame
Description
Subsetting a ff vector or ffdfdata frame
Usage
# S3 method for ff
subset(x, subset, ...)
Arguments
x
ff
vector or ffdf
data.frame to be subset
subset
an expression, ri
, bit
or logical ff
vector that can be used to index x
Value
a new ff vector containing the subset, data is physically copied