On 31/05/2010 7:07 AM, Alex van der Spek wrote:
Using read.table now on large files. Scan should be faster reading and
parsing the files if a 'what' list is provided.
How would I generate a what list that repeats the the last 4 elements n
(n=14 or 10 or 8) times?
whatlist=list(Tstamp="",Condition=0,A1=0,B1=0,C1=0,D1=0)
All are numeric, either decimal or hexadecimal.
Do it like this:
n <- 14
indices <- c(1,2, rep(3:6, n))
biglist <- whatlist[indices]
This repeats the names too; if you want new names for the repeated
columns, you can reassign the names afterwards, e.g.
names(biglist) <- paste("name", 1:(2+4*n))
Duncan Murdoch
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