Hello, I import a xlsx-table with read.xlx which contains NAs in 4 columns. In the excel table these 4 columns contain floats/integers and the word NA. But when I am importing the NAs are recognized as strings rather than as missing values.
How can I set that if a cell contains the word NA that this is a real missing value? Is there any option (probably colClasses) where I can set it for the import, and how should it look like? Or do I have to treat the imported dataframe, and if yes how? Thank you Johannes -- ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
