>glass.rf<-randomForest(Type~.,data=newglass,importance=TRUE)
> table(predict(glass.rf),newglass$Type)
1 2 3 5 6 7
1.02596685082873 1 0 0 0 0 0
1.02659574468085 1 0 0 0 0 0
1.03786324786324 1 0 0 0 0 0
1.0547619047619 1 0 0 0 0 0
1.08228571428571 1 0 0 0 0 0
1.09137931034482 1 0 0 0 0 0
1.10670391061452 1 0 0 0 0 0
1.10859649122807 0 0 1 0 0 0
1.1240932642487 1 0 0 0 0 0
1.1288596491228 1 0 0 0 0 0
1.13156862745098 1 0 0 0 0 0
1.1317679558011 1 0 0 0 0 0
1.14776422764227 1 0 0 0 0 0
1.155 1 0 0 0 0 0
1.15593495934959 1 0 0 0 0 0
1.15893186003683 1 0 0 0 0 0
1.17651072124756 1 0 0 0 0 0