Dear list,

I used read.xls to read in an excel file, which has both character and
numeric columns. Everything seems fine except in the last column, I have
this character value "ng/ml". When reading in, read.xls seems to add a space
at the end of it, became "ng/ml ". How can I prevent read.xls doing so?
Thanks.

>read.xls(data, header=T, as.is=T)

Jun

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