如何使用mathematica填充数据集中的缺失值？

Question

我有一个包含缺失值的数据集，如图所示。我想填写列的最小值来代替缺失值。 Mathematica中的哪些方法可用于解决此问题以及如何完成？

Answer 1

在没有看到您的代码的情况下，很难说出具体的内容，但通常您只需将列放入列表@Component public class YourHandler extends TextWebSocketHandler { private final static Logger logger = LoggerFactory.getLogger(YourHandler .class); private List<WebSocketSession> sessions = new CopyOnWriteArrayList<>(); @Override public void afterConnectionEstablished(WebSocketSession session) { logger.debug("Connected : " + session); sessions.add(session); } @Override public void afterConnectionClosed(WebSocketSession session, CloseStatus status) { try { //check the close status if you want... if (!status.equals(CloseStatus.NORMAL)) { session.close(); } } catch (IOException e) { logger.error("Cannot close session on afterConnectionClosed ", e); } sessions.remove(session); } @Override public void handleTransportError(WebSocketSession session, Throwable exception) { logger.debug("error has occured with the following session {}", session); try { session.close(); } catch (IOException e) { logger.error("Cannot close session on handleTransportError ", e); } } @Override protected void handleTextMessage(WebSocketSession session, TextMessage message) throws Exception { logger.debug("Receive : " + message.getPayload()); } } 并取l，然后手动填写缺失值。