If you google for "invalid 'description' argument" it should be pretty clear what's going on - most likely your DirPath_Matrix is not a single item.
B. On Apr 28, 2015, at 7:02 PM, catherine peters <catherine.h.pet...@googlemail.com> wrote: > Hi thank you in advance for your assistance. > > I am using the following section of script: > > DirPath_folder > <-Sys.glob(file.path("/Users/catpeters/Documents/R_working_directory/1_Data_MC_Sorted")) > > > for (folder in 1: length(DirPath_folder)) { > > # ## EVERY Control and Impact # > DirPath_Matrix <-Sys.glob(file.path(DirPath_folder[folder], > "*Markov_Matrix_Month.txt")) > > data <- read.table(DirPath_Matrix, header = TRUE, sep = ";") > > if (folder ==1) { DATA_ALL1 <- data } else { DATA_ALL1 <- rbind(DATA_ALL1, > data) } > > if (folder == length(DirPath_folder)) { > setwd("/Users/catpeters/Documents/R_working_directory/1_Data_MC_Sorted") > write.table(DATA_ALL1 ,"Matrix_Markov_ALL_MONTH_RB.txt" , col.names=TRUE, > row.names=FALSE, sep=";") write.table(DATA_ALL1 > ,"Matrix_Markov_ALL_MONTH_RB.csv" , col.names=TRUE, row.names=FALSE, > sep=";") } } > > There seems to be a problem with: data <- read.table(DirPath_Matrix, header > = TRUE, sep = ";"). When run it returns the Error in file(file, "rt") : > invalid 'description' argument. This has worked previously and I'm not sure > where the error is. > > Thanks again > [[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. ______________________________________________ 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.