[R] R ERROR- Error in file(file, "rt") : cannot open the connection

[Girija Kalyani]

Dear R Group,

I have an species occurence file stored in dismo/ex/abc.csv.
When i read the file, it shows error.
Error in file(file, "rt") : cannot open the connection
In addition: Warning message:
In file(file, "rt") : cannot open file
'G:/Software/R-3.1.1/library/dismo/ex/occurence.csv': No such file or
directory
What could b the reason, it shows no such file in directory, but i saved my
file in the place where i have mentioned in d code.
Can someone help me out with this?
Thanx in advanvce

[[alternative HTML version deleted]]

[Sarah Goslee]

Hi,

You don't show us your code, and you really should, but most likely
you did not put the file where you thought you did, or there's a typo
in the name.

Using file.choose() may help.

Also, I think it's bad practice to put user files in the R library
directory. You should make a working directory in your own workspace.

Sarah

Post by Girija Kalyani
Dear R Group,
I have an species occurence file stored in dismo/ex/abc.csv.
When i read the file, it shows error.
Error in file(file, "rt") : cannot open the connection
In file(file, "rt") : cannot open file
'G:/Software/R-3.1.1/library/dismo/ex/occurence.csv': No such file or
directory
What could b the reason, it shows no such file in directory, but i saved my
file in the place where i have mentioned in d code.
Can someone help me out with this?
Thanx in advanvce

[Jeff Newmiller]

Such problems usually come from not understanding where files really are, though sometimes odd file permissions can be the culprit. Understanding how backslashes work in R strings also sometimes causes problems, though you seem to be using forward slashes so that may not apply here.

You may find that reading the help files could provide more accurate picture about the file system from R's point of view than you currently have in your mind.

?list.files
list.files()
?getwd
getwd()
list.files("G:/Software/R-3.1.1/library/dismo/ex")

You should not have to use setwd() to successfully read a file, but it can be convenient.

If you confirm the directory is there but you only see a subset of files that you expect, then you may have a permissions problem. My advice is to stay away from changing permissions if at all possible... it usually only occurs because you were doing something "As Administrator" when you shouldn't have been, and fixing that is a pit of despair and off topic here.
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Post by Girija Kalyani
Dear R Group,
I have an species occurence file stored in dismo/ex/abc.csv.
When i read the file, it shows error.
Error in file(file, "rt") : cannot open the connection
In file(file, "rt") : cannot open file
'G:/Software/R-3.1.1/library/dismo/ex/occurence.csv': No such file or
directory
What could b the reason, it shows no such file in directory, but i saved my
file in the place where i have mentioned in d code.
Can someone help me out with this?
Thanx in advanvce
[[alternative HTML version deleted]]
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