If you are not going to be using factors, then you can keep everything a character (if there are non-numerics in a column) by adding 'as.is=TRUE' as a parameter on the 'rad.table' functions.
On Mon, Aug 1, 2011 at 7:55 AM, Petr PIKAL <petr.pi...@precheza.cz> wrote: > Hi > >> Hi, >> >> I have a dataframe that I imported from a .txt file by: >> >> skogTemp <- read.delim2("Skogaryd_shoot_data.txt", header=TRUE, > fill=TRUE) >> >> and the data are factors, how can avoid factors from the beginning? > Although >> the file contains both characters and numbers. > > You have got an answer but here are some comments. If you have characters > and numbers in one column the character values are converted to NA by > as.numeric > >> >> I tried to convert some of the columns from factor to numeric and as I >> understood it you can not use only as.numeric but as.character first. I > got >> this warning message: >> >> > skogTemp_1 <- as.numeric(as.character(skogTemp_1[,2:4])) >> Warning message: >> NAs introduced by coercion > > What is skogTemp_1? I presume skogTemp is data frame and in that case you > can not use such construction directly. > >> >> I have lots of NAs in my data. Tries to check what class I had now but >> another warning is given me: >> > class(skogTemp_1[,2]) > > > skogTemp_1 is probably a vector with only one dimension therefore you get > this error. > class(skogTemp_1) > > shall give you the desired result, however I prefer > > ?str > > Regards > Petr > >> Error in skogTemp_1[, 2] : incorrect number of dimensions >> > class(skogTemp_1[1,2]) >> Error in skogTemp_1[1, 2] : incorrect number of dimensions >> >> frustrating... I don't know what this mean. >> >> Can anyone help? >> >> Thank you, >> Angelica >> >> >> >> -- >> View this message in context: http://r.789695.n4.nabble.com/converting- >> > factor-to-numeric-gives-NAs-introduced-by-coercion-tp3703408p3703408.html >> Sent from the R help mailing list archive at Nabble.com. >> >> ______________________________________________ >> 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. > > ______________________________________________ > 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. > -- Jim Holtman Data Munger Guru What is the problem that you are trying to solve? ______________________________________________ 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.