[R] multi read.table function and read.table function not accepting col.names
I am using R-1.8.0 on Debian. I'm trying to read in a large table (1441*16) which currently has no header line. I have set up a list of column names which is 16 names long. when i try the following: myfiledate.01-read.table(filenamedate.01,row.names=NULL,col.names=names,na.strings=-999.00) I am returned with an error saying there are more columsh than column names. I am sure I have done this successfully in the past so can't understand the problem. I have done the read.table function without specifying col.names and it works fine and i end up with a 1441*16 data.frame. Also as I have several hundred of these tables to read into R, all having the same dimension and all having the same column names, is it possible to automate R so they will all be read in at once - each table represents a different days worth of data. Thanks Laura __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] multi read.table function and read.table function not accepting col.names
Hi! 1. assuning that names is the vector with the names. try col.names=names instead of names 2. Several ways a) use lapply(listwithpathstofiles,read.tabel,remaining, options) //u will get it stored in the list. b) or use for loop and append to list. mylist-list() c) or look ?assing to generate several hundred objects in the envrovment. Sincerely Eryk *** REPLY SEPARATOR *** On 5/26/2004 at 12:51 PM Laura Quinn wrote: I am using R-1.8.0 on Debian. I'm trying to read in a large table (1441*16) which currently has no header line. I have set up a list of column names which is 16 names long. when i try the following: myfiledate.01-read.table(filenamedate.01,row.names=NULL,col.names=names,na.strings=-999.00) I am returned with an error saying there are more columsh than column names. I am sure I have done this successfully in the past so can't understand the problem. I have done the read.table function without specifying col.names and it works fine and i end up with a 1441*16 data.frame. Also as I have several hundred of these tables to read into R, all having the same dimension and all having the same column names, is it possible to automate R so they will all be read in at once - each table represents a different days worth of data. Thanks Laura __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Dipl. bio-chem. Eryk Witold Wolski@MPI-Moleculare Genetic Ihnestrasse 63-73 14195 Berlin 'v' tel: 0049-30-83875219 / \ mail: [EMAIL PROTECTED]---W-Whttp://www.molgen.mpg.de/~wolski __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] multi read.table function and read.table function not accepting col.names
Thank you for your earlier help, I have a couple of related questions. With the lapply function, is it still possible to assign column names to each column of every data frame, again I have tried and it doesn't seem to like it.. and is it also possible to assign names to each data frame when I do lapply rather than each one being a subset of a larger frame (I don't seem to be able to attach these as individual objects). Thanks again, Laura On Wed, 26 May 2004, Wolski wrote: Hi! 1. assuning that names is the vector with the names. try col.names=names instead of names 2. Several ways a) use lapply(listwithpathstofiles,read.tabel,remaining, options) //u will get it stored in the list. b) or use for loop and append to list. mylist-list() c) or look ?assing to generate several hundred objects in the envrovment. Sincerely Eryk *** REPLY SEPARATOR *** On 5/26/2004 at 12:51 PM Laura Quinn wrote: I am using R-1.8.0 on Debian. I'm trying to read in a large table (1441*16) which currently has no header line. I have set up a list of column names which is 16 names long. when i try the following: myfiledate.01-read.table(filenamedate.01,row.names=NULL,col.names=names,na.strings=-999.00) I am returned with an error saying there are more columsh than column names. I am sure I have done this successfully in the past so can't understand the problem. I have done the read.table function without specifying col.names and it works fine and i end up with a 1441*16 data.frame. Also as I have several hundred of these tables to read into R, all having the same dimension and all having the same column names, is it possible to automate R so they will all be read in at once - each table represents a different days worth of data. Thanks Laura __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Dipl. bio-chem. Eryk Witold Wolski@MPI-Moleculare Genetic Ihnestrasse 63-73 14195 Berlin 'v' tel: 0049-30-83875219 / \ mail: [EMAIL PROTECTED]---W-Whttp://www.molgen.mpg.de/~wolski __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
