Hi , I want to use the read.table to the following example 'data.txt' format:
a b c d e f
SPX LSZ 100 C 0 34.4
SPX LSZ 100 P 0 1.3
SPX LSZ 105 C 0 30.3
SPX LSZ 105 P 0 1.85
SPX LSZ 110 C 0 26.4
and I want to have the columns a,b,d read as the 'character' data, a the
remaining columns as 'numeric'. What I did was:
read.table("data.txt",header=T,
colClasses=c("character","character","numeric","character",
"numeric","numeric"), but I could not get what I want, since all values were
in the 'character' format. I will apprecaite any suggestions.
best, robert
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