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2006 Sep 26
2
colClasses: supressed 'NA'
...#39;, but as blanks when I use 'colClasses'. temp.df <- read.fwf("test2.dat", width=c(10,1,1,1,1,2,2,3,3,1), col.names=c("psu","losewt","maintain","fewcal","phyact","age","income","weight", "wtdesire","gender"), colClasses=c("factor","factor","factor","factor","factor","numeric","factor", "numeric","numeric","factor"), nrows=270000, comment.char="") temp.df p...