On 19.11.2012 08:07, li1127217ye wrote:
read.table("data.txt",header=TRUE,colClasses=c("character","character","numeric","character", "numeric","numeric")) a b c d e f 1 SPX LSZ 100 C 0 34.40 2 SPX LSZ 100 P 0 1.30 3 SPX LSZ 105 C 0 30.30 4 SPX LSZ 105 P 0 1.85 5 SPX LSZ 110 C 0 26.40 It's right result! "header=TRUE",not "header=T". I don't know why not.
Because you have a T in your workspace that is not an alias for TRUE? Uwe Ligges
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