小编Dar*_*hia的帖子

a<- c(2,2)
b<- c(3,4)
plot(a,b) # It works perfectly here

然后我尝试了:

t<-xy.coords(a,b)
plot(t) # It also works well here

最后,我试过:

plot(t,1)

现在它告诉我:

xy.coords(x,y,xlabel,ylabel,log)出错:'x'和'y'长度不同

它不起作用,在t内,a和b都是长度为2,为什么它显示x,y长度不同？

我理解使用matplotlib.

plt.xlabel('x-axis')

plt.ylabel('y-axis')

可以在 python 中用于命名轴和标题等，只是在寻找 ward 来命名其他轴。

我正在上课这件事,我和Jlists一直有很多麻烦.我以为我终于想出了如何用列表数据模型更新它们,但它仍然不起作用.

请帮忙.

上课给我带来麻烦:

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import java.util.*;
import java.lang.*;

public class ClubDriverWindow extends JPanel implements ActionListener{
    private ArrayList playerList;
    private DefaultListModel playerListModel;

    private String[] secondPlayerItems = new String[1];
    private String[] firstPlayerItems = new String[1];
    private String[] players1Items = new String[1];
    private String[] players2Items = new String[1];
    private String[] retirePlayerItems = new String[1];
    private String[] jcomp12Items = new String[1];
    private String[] restorePlayerItems = new String[1];

    private JTextArea players;
    private JComboBox secondPlayer;
    private JComboBox firstPlayer;
    private …

我不确定为什么这段代码不起作用.我正在尝试选择你自己的冒险游戏.描述您的情况的文本是文本视图,但我无法设置它们.Android Studio表示无法解析findViewByID().

package com.blogspot.darokrithia.dungeonfungeon;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class RoomActivity extends AppCompatActivity {
    static int row = 1;            //current row of room
    static int column = 1;         //current column of room
    static int totalRows = 5;      //total number of rows (including blank rooms)
    static int totalColumns = 5;   //total number of columns (including blank rooms)
    static Layout dungeon = new Layout(totalRows,totalColumns);    //Layout of this
    static Room currentRoom = dungeon.getRoom(row,column);         //The rooms the player …

我试图将数据库中的项目添加到列表中,而不是从aspx静态添加它们.我创建了这个方法,虽然它编译,但它不会向我的下拉列表中添加任何列表项.这是一些代码,如果需要,我愿意提供更多代码.有问题的方法是addListItemsToPage().

C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace EndophthalmitisDatabase {
    public partial class DataEntry : System.Web.UI.Page {
        protected void Page_Load(object sender, EventArgs e) {
            addListItemsToPage();
        }

        protected void addListItemsToPage() {
            EndophthalmitisDBDataContext dbContext = new EndophthalmitisDBDataContext();

            for (int i=0;  dbContext.Hospital_Datas.Count() < i; i++){
                int id = dbContext.Hospital_Datas.ElementAt(i).HospitalID;
                string str = dbContext.Hospital_Datas.ElementAt(i).Hospital_Name;

                ListItem li = new ListItem();
                li.Text = str;
                li.Value = id.ToString();

                hospitalDDL.Items.Add(li);
            }

        }

        protected void submitEndoDataBtn_Click(object sender, EventArgs e)
        {
            using (EndophthalmitisDBDataContext …