On Tue, Sep 21, 2010 at 3:39 PM, David Winsemius <dwinsem...@comcast.net>wrote:
> > On Sep 21, 2010, at 6:14 PM, Tucson August wrote: > > Dear list, >> >> How to convert a character to a filename? >> > > Filenames are character mode so that shouldn't be a problem. > > > such as: >> >> x <- "height" # "height" here is actually a name of a colume in a data >> frame >> > > So you need to learn how to refer to column and that's not it. > Try: > > plant["height"] > > filename <- paste("plant,x") # Would produce "plant,x" ... not useful >> > > write.table function takes a dataframe or matrix or something that can be > coerce to one of those. > > > write.csv (data, file="C:/plant/filename.csv ) # having trouble with >> this >> > ^^ > You forgot the closing quotes ... unless that is you expected the > "c:/plant/" and the ".csv" to be automatically prepended and appended and > the filename you created to be substituted. That's not going to happen > without some greater effort. You can smush together character values like > this: > > paste("c:/path/plant/", filename, ".csv", sep="") Yes, this is where I got it wrong. Thanks. > > statement, how to 'write' the filename here? >> >> All I want from above is to write 'data' to a file named plantheight.csv >> >> (the ultimate goal is to use a loop to transfer each column of a data >> frame >> into a separated file named from that column >> > > A column name may not be a first class object. > > > e.g. to create many files with different names but the names are all like: >> plantheight.csv, plantweight.csv, and height, weight.., are column names >> of >> a data frame) >> > > Did you read the Posting Guide that suggested a reproducible example? > Going to read it now. Thanks. > > >> Thank you! >> >> Tuc Aug. >> >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> 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. >> > > David Winsemius, MD > West Hartford, CT > > [[alternative HTML version deleted]] ______________________________________________ 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.