Error In Filefile Rt Cannot Open The Connection Mac
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Error In File(file Rt ) Cannot Open The Connection R Studio
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In File File Rt Cannot Open File Permission Denied
million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Error in file(file, “rt”) : cannot open the connection - cannot open file 'specdata' access denied up vote 2
R Cannot Open File Permission Denied
down vote favorite I'm running rStudio v3.1.2 on Windows 7. This laptop is a 64-bit machine. I'm taking the JHU R Programming course offered by Coursera and am stuck on an error I'm receiving in part 1 of the problem. I have some error handling functions I'm keeping out of this example so I'm really just trying to show what I absolutely need to. The only reason I include the messages is the r cannot open the connection demonstrate that all the conditions must be satisfied in order to proceed. pollutantmean <- function(directory, pollutant, id=1:332) { setwd("C:\\Users\\WR-eSUB\\specdata") if(!isValidDirectory(directory)) { stop("Invalid input given. Please specify valid directory to operate on.") } if(!isValidPollutant(pollutant)) { stop("Invalid input given. Please specify valid pollutant (nitrate/sulfate).") } if(!isValidIdRange(id)) { stop("Invalid input given. Please specify valid id range (1:332).") } sortedData = numeric() for (i in id) { thisFileName = paste(formatC(i, width = 3, flag = "0"), ".csv", sep="") thisFileRead = read.csv(directory, thisFileName) sortedData = c(sortedData, thisFileRead[[pollutant]]) } mean(sortedData, na.rm = TRUE) } Note that inside WR-eSUB is a folder called specdata and inside that folder there is the directory that contains the .csv files also called specdata. I could change this but so far I've been working with it and I have not stumbled into any problems. When I call pollutantmean("specdata", "nitrate", 1:2) I get the following error message: Error in file(file, "rt") : cannot open the connection In addition: Warning message: In file(file, "rt") : cannot open file 'specdata': Permission denied Now in my numerous attempts to try and finish this part of the assignment I've been able to extract the data in other ways using things like lapply but because I kept getting stuck I threw everything out and wanted to try things this way. I've searched the web
This was one of the commands: read.table (G:\\totalnetwork.txt , header = TRUE) The error comes up: Error in file(file, "rt") : cannot open the connection In addition: Warning message:In error in file(file rt ) cannot open the connection calls anonymous file(file, "rt") : cannot open file 'G:\totalnetwork_FR.txt': No such file or directory Any error cannot open the connection shiny advice? Topics Biostatistics × 774 Questions 46,837 Followers Follow Bipartite × Topic pending review Follow R CRAN × 58 Questions cannot change working directory 220 Followers Follow Jan 3, 2014 Share Facebook Twitter LinkedIn Google+ 0 / 0 All Answers (6) Mirre J P Simons · The University of Sheffield I am guessing the file is not http://stackoverflow.com/questions/28597536/error-in-filefile-rt-cannot-open-the-connection-cannot-open-file-specd there.. Is it harddrive root? If it is network drive or so it might not be directly accessible or so. I do not know windows that well any more, using mac. Try a different path, say C:\test.txt or so. Different way of checking use setwd() to browse to working directory.. Good luck, soons like a basic thing, but I cannot pinpoint where it goes wrong. Jan 3, https://www.researchgate.net/post/Can_anybody_explain_why_R_cannot_read_a_certain_file 2014 Sergio de Miguel · Universitat de Lleida Hi, The path needs to be written within quotation marks. For example: read.table ("G:\\totalnetwork.txt" , header = TRUE) If the path is properly specified, this should work. Best regards, Sergio Jan 3, 2014 Alain Ponsero · nature reserve of Saint-brieuc bay the path must be in quotes. For example: "c :/ MyFolder / totalnetwork.txt" with / and not \ Jan 3, 2014 Sergio de Miguel · Universitat de Lleida Dear Alain, The symbol \\ (as in Ana Picanco's script) can be also used instead of / Jan 3, 2014 Ana Picanço · University of the Azores Thank u for the help. I found the directory with getwd () and I had to supply the full path to the CSV file, e.g. read.csv("C:/R/P506A-data-time-v3.csv", header = TRUE) Jan 3, 2014 Vernon Hedge · The University of Manchester Thanks Ana, that was really frustrating me too. Why I bothered setting a working directory in the first place, I dunno Nov 13, 2015 Can you help by adding an answer? Add your answer Question followers (11) See all Joyce C Faler The Amalgamated Sugar Company Debasish Mukherjee Saha Institute of Nuclear Ph
[R] re arrange according to first positions Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] Such problems usually https://stat.ethz.ch/pipermail/r-help/2014-August/421205.html come from not understanding where files really are, though sometimes odd file permissions can be the culprit. Understanding how backslashes work in R strings also sometimes causes problems, though you seem to be using forward slashes so that may not apply here. You may find that reading the help files could provide more accurate picture about the file system from R's point cannot open of view than you currently have in your mind. ?list.files list.files() ?getwd getwd() list.files("G:/Software/R-3.1.1/library/dismo/ex") You should not have to use setwd() to successfully read a file, but it can be convenient. If you confirm the directory is there but you only see a subset of files that you expect, then you may have a permissions problem. My advice is to stay away from cannot open the changing permissions if at all possible... it usually only occurs because you were doing something "As Administrator" when you shouldn't have been, and fixing that is a pit of despair and off topic here. --------------------------------------------------------------------------- Jeff Newmiller The ..... ..... Go Live... DCN: