Yes, it is stored as factor. I can't check out any problem in the original data. Reread data doesn't help either. I use read.csv to read in the data, do you think it is better to use read.table? Thanks again.
On Tue, Sep 20, 2016 at 3:55 PM, Greg Snow <538...@gmail.com> wrote: > This indicates that your Discharge column has been stored/converted as > a factor (run str(df) to verify and check other columns). This > usually happens when functions like read.table are left to try to > figure out what each column is and it finds something in that column > that cannot be converted to a number (possibly an oh instead of a > zero, an el instead of a one, or just a letter or punctuation mark > accidentally in the file). You can either find the error in your > original data, fix it, and reread the data, or specify that the column > should be numeric using the colClasses argument to read.table or other > function. > > > > On Tue, Sep 20, 2016 at 3:46 PM, lily li <chocol...@gmail.com> wrote: > > Hi R users, > > > > I have a problem in reading data. > > For example, part of my dataframe is like this: > > > > df > > month day year Discharge > > 3 1 2010 6.4 > > 3 2 2010 7.58 > > 3 3 2010 6.82 > > 3 4 2010 8.63 > > 3 5 2010 8.16 > > 3 6 2010 7.58 > > > > Then if I type summary(df), why it converts the discharge data to > levels? I > > also met the same problem when reading some other csv files. How to solve > > this problem? Thanks. > > > > Discharge > > 7.58 :2 > > 6.4 :1 > > 6.82 :1 > > 8.63 :1 > > 8.16 :1 > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > > 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. > > > > -- > Gregory (Greg) L. Snow Ph.D. > 538...@gmail.com > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
