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坐标系画图(C#)示例

Posted on 2007-12-21 14:27 济公 阅读(10104) 评论(3)  编辑 收藏 引用 所属分类: C#Asp.net
   //数据初始化   
   string[] month=new string[12]{"一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月"};   
   float[] d=new float[12]{20.5F,60,10.8F,15.6F,30,70.9F,50.3F,30.7F,70,50.4F,30.8F,20};   
   //画图初始化   
   Bitmap bMap=new Bitmap(500,500);   
   Graphics gph=Graphics.FromImage(bMap);   
   gph.Clear(Color.White);   
        
   PointF   cPt=new PointF(40,420);//中心点   
   PointF[] xPt=new PointF[3]{
             new   PointF(cPt.Y+15,cPt.Y),
             new   PointF(cPt.Y,cPt.Y-8),
             new   PointF(cPt.Y,cPt.Y+8)};//X轴三角形   
   PointF[] yPt=new PointF[3]{
             new   PointF(cPt.X,cPt.X-15),
             new   PointF(cPt.X+8,cPt.X),
             new   PointF(cPt.X-8,cPt.X)};//Y轴三角形   
   gph.DrawString("某工厂某产品月生产量图表",new Font("宋体",14),  
    Brushes.Black,new PointF(cPt.X+12,cPt.X));//图表标题   
   //画X轴   
   gph.DrawLine(Pens.Black,cPt.X,cPt.Y,cPt.Y,cPt.Y);   
   gph.DrawPolygon(Pens.Black,xPt);   
   gph.FillPolygon(new SolidBrush(Color.Black),xPt);   
   gph.DrawString("月份",new Font("宋体",12),  
    Brushes.Black,new PointF(cPt.Y+12,cPt.Y-10));   
   //画Y轴   
   gph.DrawLine(Pens.Black,cPt.X,cPt.Y,cPt.X,cPt.X);   
   gph.DrawPolygon(Pens.Black,yPt);   
   gph.FillPolygon(new SolidBrush(Color.Black),yPt);   
   gph.DrawString("单位(万)",new Font("宋体",12),Brushes.Black,new PointF(6,7));   
   for(int i=1;i<=12;i++ )   
   {   
    //画Y轴刻度   
    if(i<11)   
    {   
     gph.DrawString((i*10).ToString(),new Font("宋体",11),Brushes.Black,
      new PointF(cPt.X-30,cPt.Y-i*30-6));   
     gph.DrawLine(Pens.Black,cPt.X-3,cPt.Y-i*30,cPt.X,cPt.Y-i*30);   
    }
    //画X轴项目   
    gph.DrawString(month[i-1].Substring(0,1),new Font("宋体",11),Brushes.Black,
     new PointF(cPt.X+i*30-5,cPt.Y+5));   
    gph.DrawString(month[i-1].Substring(1,1),new Font("宋体",11),
     Brushes.Black,new PointF(cPt.X+i*30-5,cPt.Y+20));   
    if(month[i-1].Length>2)  
     gph.DrawString(month[i-1].Substring(2,1),new Font("宋体",11),
      Brushes.Black,new PointF(cPt.X+i*30-5,cPt.Y+35));   
    //画点   
    gph.DrawEllipse(Pens.Black,cPt.X+i*30-1.5F,cPt.Y-d[i-1]*3-1.5F,3,3);   
    gph.FillEllipse(new SolidBrush(Color.Black),cPt.X+i*30-1.5F,cPt.Y-d[i-1]*3+1.5F,3,3);   
    //画数值   
    gph.DrawString(d[i-1].ToString(),new Font("宋体",11),Brushes.Black,
     new PointF(cPt.X+i*30,cPt.Y-d[i-1]*3));   
    //画折线   
    if(i>1)  
     gph.DrawLine(Pens.Red,cPt.X+(i-1)*30,cPt.Y-d[i-2]*3,cPt.X+i*30,cPt.Y-d[i-1]*3);   
   }
   //显示在pictureBox1控件中
   this.pictureBox1.Image=bMap;
   //保存输出图片   
   bMap.Save("c:\\test.bmp");  
图片如下:

 

Feedback

# re: 坐标系画图(C#)示例  回复  更多评论   

2007-12-22 16:34 by zzz
VERY GOOD!

# re: 坐标系画图(C#)示例  回复  更多评论   

2009-07-11 16:36 by jsf
好的很。

# re: 坐标系画图(C#)示例  回复  更多评论   

2010-07-26 20:43 by 00
很好 学习
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