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Someone gave me some "R" files. Some of them are saved with a capital "R" extension, i.e. ".R", and some are saved with a lowercase extension, i.e. ".r".
I can open the lowercase ones fine, but the uppercase ones say that permission is denied?
My questions: - What is a way around this? I cannot contact him to get the original files. - What is the fundamental difference between saving in ".R" and ".r"?
Thanks.
570
Technically R is a function language with a very simple syntax. It is case sensitive, so A and a are different variables.
Key Point: Use all lowercase, and separate words with hyphens. Make file and directory names lowercase. Use hyphens, not underscores, to separate words—for example, query-data. html .
We can use str_detect function to check whether a single string or a vector of strings is in lowercase or uppercase.
tolower() method in R programming is used to convert the uppercase letters of string to lowercase string. Return: Returns the lowercase string.
There should be no difference. If you are getting permission denied on reading any files, then you need to change the permissions so you can read them.
If you are on unix, you can use the following command assuming you own the files.
chmod u+r <filename>
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