Dear Uwe and R community members Thank you Uwe for the help.
I have still a question remaining, I am trying to find answer from long time. While exporting my data, I have some characters mixed into it. I want to define any characters as na.string? Is it possible to do so? Thanks; Umesh -----Original Message----- From: Uwe Ligges [mailto:lig...@statistik.tu-dortmund.de] Sent: Monday, April 04, 2011 12:22 PM To: Umesh Rosyara Cc: r-help@r-project.org; rosyar...@gmail.com Subject: Re: [R] merging data list in to single data frame On 04.04.2011 16:41, Umesh Rosyara wrote: > Dear R community members > > > > I did find a good way to merge my 200 text data files in to a single data > file with one column added will show indicator for that file. > > > > filelist = list.files(pattern = "K*cd.txt") I doubt you meant "K*cd.txt" but "^K[[:digit:]]*cd\\.txt$". # the file names are K1cd.txt > .................to K200cd.txt > > data_list<-lapply(filelist, read.table, header=T, comment=";", fill=T) Replace by: data_list <- lapply(filelist, function(x) cbind(Filename = x, read.table(x, header=T, comment=";", fill=TRUE)) And then: result <- do.call("rbind", data_list) Uwe Ligges > > > > This will create list, but this is not what I want. > > > > I want a single dataframe (all separate dataframes have same variable > headings) with additional row for example > > > > ; just for example, two small datasets are created by my component datasets > are huge, need automation > > ;read from file K1cd.txt > > var1 var2 var3 var4 > > 1 6 0.3 8 > > 3 4 0.4 9 > > 2 3 0.4 6 > > 1 0.4 0.9 3 > > > > ;read from file K2cd.txt > > var1 var2 var3 var4 > > 1 16 0.6 7 > > 3 14 0.4 6 > > 2 1 3 0.4 5 > > 1 0.6 0.9 2 > > > > the output dataframe should look like > > > > Fileno var1 var2 var3 var4 > > 1 1 6 0.3 8 > > 1 3 4 0.4 9 > > 1 2 3 0.4 6 > > 1 1 0.4 0.9 3 > > 2 1 16 0.6 7 > > 2 3 14 0.4 6 > > 2 2 1 3 0.4 5 > > 2 1 0.6 0.9 2 > > > > Please note that new file no column is added > > > > Thank you for the help. > > > > Umesh R > > > > > [[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. ______________________________________________ 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.
