> 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.
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