[R] Determining which file is newer

Dennis Fisher fisher at plessthan.com
Fri Oct 23 18:02:24 CEST 2009


I wish to execute a task only if a particular file is newer than a  
second file.  I can access the file modification dates using  
This yields a time object (? POSIX).
			size 	isdir 	mode 	mtime 					ctime
	Testfile 	4421 	FALSE 	755 	2009-10-23 08:59:09 		2009-10-23 08:59:09
What is the simplest means to compare these two objects?

R2.9.1 in OSX, Windows, Linux


Dennis Fisher MD
P < (The "P Less Than" Company)
Phone: 1-866-PLessThan (1-866-753-7784)
Fax: 1-866-PLessThan (1-866-753-7784)

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