epclust = function(data=NULL, con=NULL, raw=FALSE, K, nbPerChunk, ...)
{


#TODO: just a wrapper which calls ppam.exe (system("...")) and reads output (binary) file to retrieve medoids + IDs
	#on input: can be data or con; data handled by writing it to file (ascii or bin ?!),
	#con handled 


	#options for tmp files: in RAM, on disk, on DB (can be distributed)



	if (!is.null(data))
	{
		#full data matrix
		
	} else if (!is.null(con))
	{
		#incremental connection
		#read it one by one and get coeffs until nbSeriesPerChunk
		#then launch a clustering task............
	} else
		stop("at least 'data' or 'con' argument must be present")

}