Setting tape file format/compression.
Name of the compression algorithm; should be one of the
rtape uses R connections to store data; this function creates a function that is used to create a connection by the other
rtape's functions. Changing its parameters allows advanced user to change compression format/level and thus control the speed/file size trade-off. The default values (gzip, 6th level of compression) should give performance similar to this of
The function to be passed to the
fileFormat* arguments of other
Effectively, this function is needed only to set up the format of the new, blank tape (i.e. in the first call to
rtapeAdd or for altering compression along with tape reconstruction operations performed by
rtapeFilter); when dealing with already existing tapes, the
guessFileFormat will recognise the right format from the file header.
Miron B. Kursa M.Kursa@icm.edu.pl
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