[R] missing value replacement for test data in random forest

[Zhu Ailing]

HI, 
  I have data set of 30000 record with 162 features. when I try to fill out the missing values using rfImpute(), I got kicked out becz:  
tra.imputed <- rfImpute(tra.na[,-163],tra.na[,163],iter=5,ntree=10)
Error in matrix(0, n, n) : cannot allocate vector of length 900000000
 
I wonder how to set the parameters(nrnn) for computing the PROXIMITY.
thanks
iris

	-----Original Message----- 
	From: Zhu Ailing 
	Sent: Wed 3/29/2006 11:41 AM 
	To: 'r-help at lists.R-project.org' 
	Cc: 
	Subject: missing value replacement for test data in random forest
	
	
	Hi,
	 
	In R, how to do missing value replacement for test data in randome forest in the way Breiman decribed.
	 
	thanks in advance
	 
	iris