Write it out as a csv from excel and see what the data looks like. That may help in seeing what the problem is.
Sent from my Verizon Wireless 4G LTE Smartphone <div>-------- Original message --------</div><div>From: Mohsen Jafarikia <jafari...@gmail.com> </div><div>Date:01/14/2016 11:36 (GMT-05:00) </div><div>To: jim holtman <jholt...@gmail.com> </div><div>Cc: r-help <r-h...@stat.math.ethz.ch> </div><div>Subject: Re: [R] read.xlsx - write.xlsx: reading/writing numbers as character </div><div> </div>Thanks for the comment Jim. There is no blank cell. All have numbers. Mohsen On Thu, Jan 14, 2016 at 11:29 AM, jim holtman <jholt...@gmail.com> wrote: Take a look at the data coming in since you may have something that looks like characters (maybe 'blanks'). What you think is numeric in EXCEL might not be. Jim Holtman Data Munger Guru What is the problem that you are trying to solve? Tell me what you want to do, not how you want to do it. On Thu, Jan 14, 2016 at 11:20 AM, Mohsen Jafarikia <jafari...@gmail.com> wrote: Hello: I am reading some excel files (each with one sheet) and trying to write them all in one file. I am not sure if read.xlsx reads some of the columns as character or write.xlsx writes them as character where they are not characters. I have 12 columns (2 character and 10 numbers). From 10 number columns, with float and integer numbers, only 3 of them are recognized correctly. I was wondering how can I define the the column format for read.xlsx - write.xlsx. Here comes a simple example of my code: ifn1 <- "A.xlsx" dat1 <- read.xlsx(ifn1, sheetName="A.csv", header = TRUE) ifn2 <- "F.xlsx" dat2 <- read.xlsx(ifn2, sheetName="F.csv",header = TRUE) write.xlsx(dat1, file="AF.xlsx", sheetName="A", showNA=FALSE, row.names=FALSE, append=FALSE) write.xlsx(dat2, file="AF.xlsx", sheetName="F", showNA=FALSE, row.names=FALSE, append= TRUE) Thanks in advance! Mohsen [[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. [[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.