



Dear all,    Have read dna microarray cel files and normalized the data and then tried to use the random forest classifier but i keep getting the error "cannot allocate vector of 1.8G".  I had a 3gb ram and upgraded it to 8gb and am still getting the same error exactly.  In the first case got a warning that it reached total allocation of 3gb and the second case got the warning, reached total allocation of 8gb.   The code I used for random forest is test<-randomForest(Type~., data=tdata) The tdata is 22215 genes for four samples and the type of each sample(2 classes).  Prediction here is done for the type.  The tdata is a matrix of 22216 columns which consists of 22215 genes and the type and there are 4 rows for four samples.  Two types. Any help? Regards,salwa 		 	   		  
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