File & Connection Errors

Cannot open connection

Matches: cannot open the connection

WHAT THIS ERROR MEANS

R couldn't open a file or URL. The file might not exist, the path might be wrong, or you don't have permission to access it.

1. Check the file path with file.exists().

2. Use getwd() to see your working directory.

3. Use an absolute path or setwd() to the correct directory.

BAD — THIS CAUSES THE ERROR

read.csv("data.csv")  # file not in working directory

GOOD — CORRECT APPROACH

read.csv("/path/to/data.csv")  # absolute path
# or
setwd("/path/to/")
read.csv("data.csv")

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