code: public static void printErrors( List<ImageResults> results ) {
  		double totalError = 0;
  		for( int i = 0; i < results.size(); i++ ) {
  			ImageResults r = results.get(i);
  			totalError += r.meanError;
  
  			System.out.printf("image %3d Euclidean ( mean = %7.1e max = %7.1e ) bias ( X = %8.1e Y %8.1e )\n",i,r.meanError,r.maxError,r.biasX,r.biasY);
  		}
  		System.out.println("Average Mean Error = "+(totalError/results.size()));
  	}
docs: Prints out error information to standard out