文章标题

最近做的项目对argis生成的shp文件进行处理，比如把里面的线，点，面，对应的坐标读取来，然后根据百度接口，将点，线，面。加到百度地图上面
进行二次开发。使用c#将shp文件，读出坐标写到文档里面。里面遇到一个问题，就是发现。shp文件里面的线数据竟然是三维的，多一个Z轴，通过supermap desktop 将三维的线变为二维的就行，具体如何变，百度一下，该如何做。`代码已经上传
switch (ShapeType)
{
case 1: //Single Point 点
fs = new FileStream(“C:\Users\Administrator\Desktop\桌面bak\a\test.txt”, FileMode.Create);//将读出坐标放到路径文件，要自己修改
sw = new StreamWriter(fs);
sw.WriteLine(“{0} {1} {2}”,”line”,”linePoint”,”coordinate”);
for (int n = 0; n < RecorderNumber; n++)
{
RecorderNum = br.ReadInt32(); //记录号
Num++;
ContentLength = br.ReadInt32(); //坐标记录长度
RecorderNum = Convert.ToInt32(big2little(RecorderNum));
ContentLength = Convert.ToInt32(big2little(ContentLength)); // ContentLength以字为单位，一字等于2字节，等于16位
int shapetype1 = 0;
double x = 0;
double y = 0;
shapetype1 = br.ReadInt32();
x = br.ReadDouble();
y = br.ReadDouble();
textBox_show.Text += RecorderNum.ToString() + ” ” + ContentLength.ToString() + ” ” + shapetype1.ToString() + ” ” + x.ToString() + ” ” + y.ToString() + ” \r\n”;
Console.WriteLine(“这是第” +n+ “个断点” + “x=” + x+”y=”+y);
sw.WriteLine(“{0} {1} {2},{3}”, n, 1, x, y);
}
sw.Close();
break;
case 3: //Polyline 线

                fs = new FileStream("C:\\Users\\Administrator\\Desktop\\桌面bak\\a\\test.txt", FileMode.Create);                 sw = new StreamWriter(fs);                 sw.WriteLine("{0}        {1}        {2}","line","linePoint","coordinate");                 Console.WriteLine("一共有" + RecorderNumber + "条线");                for (int n = 0; n < RecorderNumber; n++)                {                    Console.WriteLine("第" + n + "条线");                    RecorderNum = br.ReadInt32();                     //记录号                    Num++;                    ContentLength = br.ReadInt32();     //坐标记录长度                    RecorderNum = Convert.ToInt32(big2little(RecorderNum));                    ContentLength = Convert.ToInt32(big2little(ContentLength));        // ContentLength以字为单位，一字等于2字节，等于16位                    int shapetype1 = 0;          //几何类型                    shapetype1 = br.ReadInt32();                    double Xmin1 = 0;    //边界盒                    double Ymin1 = 0;                    double Xmax1 = 0;                    double Ymax1 = 0;                    Xmin1 = br.ReadDouble();                    Ymin1 = br.ReadDouble();                    Xmax1 = br.ReadDouble();                    Ymax1 = br.ReadDouble();                    int Numparts;     //子线段个数                    int Numpoints;    //坐标点数                    Numparts = br.ReadInt32();                    Numpoints = br.ReadInt32();                    int[] parts = new int[Numparts];                    for (int i = 0; i < Numparts; i++)                    {                        parts[i] = br.ReadInt32();                    }                    double[] pointsx = new double[Numpoints];                    double[] pointsy = new double[Numpoints];                    for (int i = 0; i < Numpoints; i++)                    {                        pointsx[i] = br.ReadDouble();                        pointsy[i] = br.ReadDouble();                    }                    textBox_show.Text += RecorderNum.ToString() + "   " + ContentLength.ToString() + "   " + shapetype1.ToString() + "   "; //+ x.ToString() + "   " + y.ToString() + "***************";                    for (int i = 0; i < Numpoints; i++)                    {                        Console.WriteLine("这是第"+i+"个断点"+ "x=" + pointsx[i]);                        textBox_show.Text += "x=" + pointsx[i] + "  ";                        textBox_show.Text += "y=" + pointsy[i] + "  ";                        Console.WriteLine("这是第" + i + "个断点" + "y=" + pointsy[i]);                        //                        //获得字节数组                        sw.WriteLine("{0}        {1}             {2},{3}",n,i,pointsx[i],pointsy[i]);                       // sw.WriteLine(".NET笔记");                    // byte[] data = System.Text.Encoding.Default.GetBytes(+pointsx[i] + "," + pointsy[i]);                        //开始写入                       // fs.Write(data, 0, data.Length);                       // fs.Flush();                        //fs.Close();                    }                    textBox_show.Text += " \r\n";                }                sw.Close();                break;                } `