C# 大数据画图处理

Question

用matlab画，就能一次性画，而且速度也很快。C#有什么好的办法没有，什么需要什么图形加速器之类的呢。

Answer 1

你可以试试商业控件，原来用TeeChart动态绘制几万个点好像没问题的，几十万没试过。如果绘制折线，DrawLines()性能远远好于循环DrawLine

Answer 2

10W点对于图像来说其实不算多
1024*768=786432,这都快100W点了
关键是不能用DrawLine去画,那个是画线用的
我觉得你就算定义个bmp或image类型的图,挨个像素去赋值,也会比画线快.

Answer 3

切割图片功能
#region Windows 窗体设计器生成的代码        /// <summary>
        /// 设计器支持所需的方法 - 不要
        /// 使用代码编辑器修改此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {
            this.pictureBox1 = new System.Windows.Forms.PictureBox();
            this.button1 = new System.Windows.Forms.Button();
            this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
            ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
            this.SuspendLayout();
            // 
            // pictureBox1
            // 
            this.pictureBox1.Location = new System.Drawing.Point(5, 4);
            this.pictureBox1.Name = "pictureBox1";
            this.pictureBox1.Size = new System.Drawing.Size(202, 133);
            this.pictureBox1.TabIndex = 0;
            this.pictureBox1.TabStop = false;
            this.pictureBox1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseDown);
            this.pictureBox1.MouseMove += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseMove);
            this.pictureBox1.MouseUp += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseUp);
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(68, 142);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(75, 23);
            this.button1.TabIndex = 7;
            this.button1.Text = "打开图片";//CodeGo.net
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // openFileDialog1
            // 
            this.openFileDialog1.FileName = "openFileDialog1";
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(322, 169);
            this.Controls.Add(this.pictureBox1);
            this.Controls.Add(this.button1);
            this.MaximizeBox = false;
            this.Name = "Form1";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "剪切图片";
            this.MouseClick += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseClick);
            ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit();
            this.ResumeLayout(false);        }