About ROC curves

Hi, Dear all R users:

Does someone know whether R can calculate the Receiver Operating 
Characteristic (ROC) Curves? I didn't find it from the packages.

Thanks a lot.

--- Xin
package ROC from bioconductor, eg:

http://www.bioconductor.org/repository/release1.5/package/Win32/

Cheers!
Christoph
Hi, Dear all R users:

Does someone know whether R can calculate the Receiver Operating 
Characteristic (ROC) Curves? I didn't find it from the packages.

Thanks a lot.

--- Xin

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Hi, Dear all R users:

Does someone know whether R can calculate the Receiver Operating 
Characteristic (ROC) Curves? I didn't find it from the packages.
Issue 1 of the R Newsletter this year used ROC curve calculation as an 
example of simple S3 and S4 classes.

 	-thomas