Description Usage Arguments Details Value Note Author(s) See Also Examples
Function as.ff.bit
converts a bit
vector to a boolean ff
vector.
Function as.bit.ff
converts a boolean ff
vector to a ff
vector.
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x |
the source of conversion |
filename |
optionally a desired filename |
overwrite |
logical indicating whether we allow overwriting the target file |
... |
further arguments passed to ff in case |
The data are copied bot bit-wise but integerwise, therefore these conversions are very fast.
as.bit.ff
will attach the ff filename to the bit vector, and as.ff.bit
will - if attached - use THIS filename and SILENTLY overwrite this file.
A vector of the converted type
NAs are mapped to TRUE in 'bit' and to FALSE in 'ff' booleans. Might be aligned in a future release. Don't use bit if you have NAs - or map NAs explicitely.
Jens Oehlschl<c3><a4>gel
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