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Last data update: 2014.03.03

R: Subsetting a ff vector or ffdfdata frame

subset.ff

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Subsetting a ff vector or ffdfdata frame

Subsetting a ff vector or ffdfdata frame

## S3 method for class 'ff'
subset(x, subset, ...)

`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
`...`	not used

a new ff vector containing the subset, data is physically copied