Error in file(file, “rt”) : cannot open the connection [duplicate]

Answer 1

This error also occurs when you try to use the result of getwd() directly in the path. The problem is the missingness of the "/" at the end. Try the following code:

projectFolder <- paste(getwd(), "/", sep = '')

The paste() is to concatenate the forward slash at the end.

Answer 2

I just spent a lot of time trying to understand what was wrong on my code too...

And it seems to be simple if you are using windows.

When you name your file "blabla.txt" then windows name it "blabla.txt.txt"... That's the same with .CSV files so windows create a file named "001.csv.csv" if you called it "001.csv"

So, when you create your .csv file, just rename it "001" and open it in R using read.table("/absolute/path/of/directory/with/required/001.csv")

It works for me.

Answer 3

I got my R code file from a friend and was not able to run read.csv command but If I copy the same command(read.csv ) to a new R script file, it ran fine.

Below command was not running in R code file shared by my friend, working directory,file name etc were all correct because If I created a new R script file and ran below command ,it worked.

           df <- read.csv("file.csv",header=TRUE,stringsAsFactors = FALSE,strip.white = 
           TRUE,sep = ',')

issue/resolution: I right clicked the R code file and unblocked the file and click save button and issue got resolved. I your R code file is in Downloads folder in windows , then move to some other folder.

Answer 4

Got this error and found that RStudio on my Windows machine try to use \ as escape symbol, so had to replace it with \\ to deal with it.

Try file.exists function with your path, e.g.:

file.exists("D:\\R\\path_to_file.csv")

Answer 5

If running on Windows try running R or R Studio as administrator to avoid Windows OS file system constraints.

Answer 6

The reason why you see this error I guess is because RStudio lost the path of your working directory.

(1) Go to session...

(2) Set working directory...

(3) Choose directory...

--> Then you can see a window pops up.

--> Choose the folder where you store your data.

This is the way without any code that you change your working directory. Hope this can help you.