[R] creating a list of lists

Paul Boutros paul.boutros at utoronto.ca
Sun Jan 7 05:22:15 CET 2007


I'm trying to create a series of randomForest objects, basically in a  
loop like this:

forests <- list();

for (level in 1:10) {

          # do some other things here

	# create a random forest
	forest <- randomForest(
		x = x.level,
		y = z.level,
		ntree = trees

	forests <- c(forests, forest);


But instead of creating a list of 10 forests, this creates a list of  
180 elements, 18 for each forest.  Is there a way to create a list of  
randomForest objects for use later on in code like:

for (forest in forests) {
         values <- predict(forest, data);
         # do things with these predicted values


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