code: public void toCSV(String fileName) throws Exception {
  		BufferedWriter out = new BufferedWriter(new FileWriter(new File(fileName)));
  		for (int i = 0; i < loadCounter; i++) {
  			String identifier = getId(i);
  			double[] vector = getVector(i);
  			out.write(identifier);
  			for (int k = 0; k < vector.length; k++) {
  				out.write("," + vector[k]);
  			}
  			out.write("\n");
  			out.flush();
  		}
  		out.close();
  	}
docs: Writes all vectors in a csv formated file. The id goes first, followed by the vector.
  
  @param fileName
  Full path to the file
  @throws Exception