private double[] getMetric(int row, Metrics metrics) {
   double[] ret = new double[metrics.data.size()];
   for (int i = 0; i < ret.length; i++) {
     ret[i] = ((RealMatrix) metrics.data.get(i)).getEntry(row, 0);
   }
   Utils.normalize(ret, game.utils.Utils.getMax(ret));
   return ret;
 }