[R] sequential processing
g_smits at verizon.net
Sun Jan 21 20:22:07 CET 2007
Like many others, I am new to R but old to SAS.
Am I correct in understanding that R processes a data frame in a
sequential ly? This would imply that large input files could be
read, without the need to load the entire file into memory.
Related to the manner of reading a frame, I have been looking for the
equivalent of SAS _n_ (I realize that I can use a variant of which to
identify an index value) as well as useful SAS features such as
first., last., retain, etc. Any help with this conversion appreciated.
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