Hi, there. 
 I am trying to read a file into R, but I got following message 
Error in file(file, "r") : unable to open connection In addition: Warning message: cannot open file `SwirlSample.txt' .
In fact, my file has been already in the current working directory.
My R is running on window operation system instead of UNIX.
Thanks. 
Shizhu Zang 
Department of Biochemsitry 
Peking University
Beijing 
China





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