automatic levels
Hello, I've imported a csv, semi-colon spearated file with read.csv2, containing one column of rownames and one column of floating point numbers. When I look at the column of data with framename$columnname, I get the values of the column plus level values. Are these level values created automatically ? The problem is when I try to calcluate the correlation coefficient between this set of data and another with lm(x~y), the result indicates that each level seems to have been used as independent variable, making my results unusable. How can I suppress the automatic creation of these levels ? Or how can I model with lm() without the levels interfering ? I've been trying to find the response in some of the manuals, but haven't been able to, so if someone could just point me to the right place... Thank you ! P.S. I'm not subscribed to the list so I would aprreciate cc's to my address.
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