I'm using Rstudio and I cannot open several file .txt because of this error message :
Error in file(file, "rt") : cannot open the connection
I enter :
X1= read.table("fileX1.txt", header = FALSE)
I don't understand because some of my colleagues use the same function with the same .txt file and it works for them
Since you aren't specifying the path to the file, R will look for it in the current directory. If that isn't the directory containing the file, you'll get that error.
You can use setwd() (or a menu command in RStudio) to set the current directory. Alternatively, you could use file.choose() to get a dialog to choose the file; it will return the full filename including the path.
Related
I have saved an Excel file as Tab delimited, but when I try to open it I get the following error:
a=read.delim("GBM tab")
Error in file(file, "rt") : cannot open the connection
In addition: Warning message:
In file(file, "rt") : cannot open file 'GBM tab': No such file or directory
While I have a text file named GBM tab in my working directory.
Even when I press Tab, no matches are found. What is the problem?
One easier option is to use file.choose() and then just direct to the file in the directory
a <- read.delim(file.choose())
In the OP's code, it is possible that a file have .txt or .csv at the end it needs to be specified
a <- read.delim("GBM tab.txt")
I just downloaded R onto my computer, but when I try to read a .csv file I get the following error:
Error in file(file, "rt") : cannot open the connection
In addition: Warning message:
In file(file, "rt") :
cannot open file '[filename].csv': No such file or directory
This happens both when I command the program to read the .csv or when I try to import it manually (although that error code is slightly different).
Could this be because I don't have Microsoft Office (and subsequently, Excel) on my computer? The .csv file exists and is not corrupt because I have no problem uploading the file to Google sheets and displaying the data there. Either that, or I didn't install R correctly. Any suggestions?
No, you don't need any special packages to read plain text CSV files in R.
Looking at your error message:
Warning message: In file(file, "rt") : cannot open file '[filename].csv': No such file or directory
I would guess that the problem is your path to the file in question. As a quick fix, you can try using the fully qualified path to your file. For example, on Windows you might try this:
data <- read.csv(file="c:/path/to/filename.csv", header=TRUE, sep=",")
If this works, then the issue was the location of your CSV file. Then, if you want to continue using a relative path, you'll have to figure out what that would be given your current R setup.
I am trying to use RTextTools for none .csv files.
data7 <- read_data('/Users/Ziegler1812/Desktop/Essays/Fall 2016/461/Data-PrelimforR/Data-PrelimforR4/', type = 'folder',index = '1.txt',1)
Error in file(file, "rt") : cannot open the connection In addition:
Warning message: In file(file, "rt") : cannot open file '1.txt': No
such file or directory
'1.txt' does in fact exist in that location, the problem is not the file's existence, it is getting to the location of the file.
The problem was that in RTextTools the index is not to be an index from within the folder, it is to either be the folder itself, or an outside entity that is similar to that within the folder. Further, the explanation shows that folder is for txt files, however 'delim' is for txt files, which is why I couldn't get it to work.
Thanks.
I have a xlsx file and to read from Rstudio i saved it as .csv file. Now when i try to read the file from Rstudio, receiving the below error.
setwd("D:/DATA SCIENCE/CCPP-Linear regression")
ccpp<- read.csv("Folds5x2_pp.csv", header = TRUE)
Error in file(file, "rt") : cannot open the connection In addition:
Warning message: In file(file, "rt") : cannot open file
'Folds5x2_pp.csv': No such file or directory
As already mentioned in the comments, the "cannot open the connection" part of the error message confirms that where R is looking is not where the file is.
A few things to keep in mind
use getwd() to see the current R working directory
use setwd() to change R's wd
You should use RStudio projects to organize your projects - this helps with the working directory thing
spaces in paths are difficult sometimes. Looks like you have "D:/DATA SCIENCE", that space can cause problems (you may need to escape the space like "DATA\ SCIENCE".
You can read the file using the full path (e.g. read.csv("D:/DATA SCIENCE/path/file.csv")) or if you are doing this a lot, set a variable to your path data_path ="D:/DATA SCIENCE/path/" and then read.csv(file.path(data_path, "file.csv")) where file.path concatenates with your OS specific path delimiter.
You can import files into RStudio using the Import Dataset option under Tools in the menu bar.
I created a project in R (my first "project"; before I was just dabbling in a moltitude of files). To do that, first I created a new empty folder in Finder and named it "new_study_results_analysis_R". Then I created the new project referring to that folder. After that, I moved all the files I wanted to analyze in the aferomentioned folder.
At this point I tried to open one of the files:
> dat = read.csv("30sub8a10.csv", header = TRUE)
But I get the error:
Error in file(file, "rt") : cannot open the connection
In addition: Warning message:
In file(file, "rt") :
cannot open file '30sub8a10.csv': No such file or directory
So I checked:
> getwd()
[1] "/Users/S/Users/S/Dropbox/(0.01)__OculusStudy/(0.0)New_study/new_study_results_analysis_R"
The working directory is the right one.
I don't understand. How can I open the files?
There's a duplicate "/Users/S/" in the getwd() output. To set the right working directory in a Mac, open up a terminal console, and drag and drop the folder with the data into terminal. Copy the path that appears in terminal and use that in setwd("...").