private static Instances convertToInstances( final IScope scope, final IList<String> attributes, final IAddressableContainer<Integer, IAgent, Integer, IAgent> agents) throws GamaRuntimeException { FastVector attribs = new FastVector(); for (String att : attributes) { attribs.addElement(new Attribute(att)); } Instances dataset = new Instances(scope.getAgentScope().getName(), attribs, agents.length(scope)); for (IAgent ag : agents.iterable(scope)) { int nb = attributes.size(); double vals[] = new double[nb]; for (int i = 0; i < nb; i++) { String attrib = attributes.get(i); Double var = Cast.asFloat(scope, ag.getDirectVarValue(scope, attrib)); vals[i] = var; } Instance instance = new Instance(1, vals); dataset.add(instance); } return dataset; }