How to Fix in R: Error in file(file, “rt”) : cannot open the connection

 

In this tutorial you’ll learn how to fix the message “Error in file(file, “rt”) : cannot open the connection” in the R programming language.

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Example 1: Reproducing the Message: Error in file(file, “rt”) : cannot open the connection

The R programming code below illustrates why the error message “Error in file(file, “rt”) : cannot open the connection” appears in R.

Let’s assume that we want to import a csv file to R that is called my_data.csv. Then, we can use the read.csv function as shown below:

my_data <- read.csv("my_data.csv")    # Try to import data
# Error in file(file, "rt") : cannot open the connection
# In addition: Warning message:
# In file(file, "rt") :
#   cannot open file 'my_data.csv': No such file or directory

However, as you can see the RStudio console returned the error message “Error in file(file, “rt”) : cannot open the connection”. The reason for this is that we didn’t properly specify the working directory in which the csv file is stored.

The following example explains how to solve this error…

 

Example 2: Fixing the Message: Error in file(file, “rt”) : cannot open the connection

In this Example, I’ll illustrate how to fix the error message “Error in file(file, “rt”) : cannot open the connection”. For this, we have to specify the working directory were out csv file is stored using the setwd function:

setwd("C:/Users/Joach/Desktop/")      # Change working directory

Now, we can execute exactly the same code as we did in Example 1…

my_data <- read.csv("my_data.csv")    # Properly import data

…and this time it works without any error messages.

 

Video & Further Resources

Have a look at the following video of my YouTube channel. In the video, I’m explaining the R code of this article:

 

The YouTube video will be added soon.

 

Furthermore, you may want to read the other articles on this homepage:

 

You learned in this tutorial how to handle the error message “Error in file(file, “rt”) : cannot open the connection” in the R programming language. In case you have additional questions and/or comments, please let me know in the comments section. Furthermore, don’t forget to subscribe to my email newsletter to receive updates on the newest tutorials.

 

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