public ArrayList<String[]> importData(String filepath){
		BufferedReader buffReader = null;
		String line = "";
		ArrayList<String[]> readPatterns = new ArrayList<String[]>();
		
		try {
			buffReader = new BufferedReader(new FileReader(filepath));
			while((line = buffReader.readLine()) != null){
				String[] stringNum = line.split(","); //split at commas
				readPatterns.add(stringNum);
			}
			buffReader.close();
		}
		catch (Exception e){
			System.err.println("Error: "+ e.getMessage());
		}
		return readPatterns;
	}