一、坐标文件
二、实现代码
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.IO; using ESRI.ArcGIS.Controls; using ESRI.ArcGIS.Geometry; using ESRI.ArcGIS.Carto; using ESRI.ArcGIS.Geodatabase; using ESRI.ArcGIS.DataSourcesFile; using ESRI.ArcGIS.esriSystem; namespace CreateShapefileFromText { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private AxMapControl buddyMap; /// <summary> /// 关联地图控件 /// </summary> public AxMapControl BuddyMap { get { return buddyMap; } set { buddyMap = value; } } string shapeFileFullName = string.Empty; string surveyDataFullName = string.Empty; List<string> pColumns = new List<string>(); List<CPoint> pCPointList = new List<CPoint>(); struct CPoint { public double x; public double y; public string name; } private void btnOpen_Click(object sender, EventArgs e) { OpenFileDialog pOFD = new OpenFileDialog(); pOFD.Multiselect = false; pOFD.Title = "打开测量数据坐标文件:"; pOFD.InitialDirectory = System.IO.Directory.GetCurrentDirectory(); pOFD.Filter = "测量坐标文件(*.TXT)|*.TXT"; if (pOFD.ShowDialog() == DialogResult.OK) { surveyDataFullName = pOFD.FileName; this.textBox1.Text = surveyDataFullName; } } private void btnSave_Click(object sender, EventArgs e) { SaveFileDialog saveFileDialog = new SaveFileDialog(); saveFileDialog.Filter = "Shape文件(*.shp)|*.shp"; DialogResult dialogresult = saveFileDialog.ShowDialog(); if (dialogresult == DialogResult.OK) { shapeFileFullName = saveFileDialog.FileName; } else { shapeFileFullName = null; return; } this.textBox2.Text = shapeFileFullName; } /// <summary> /// 从测量数据中获取所有点 /// </summary> /// <param name="surveyDataFullName">测量数据路径</param> /// <returns>获取的点</returns> private List<CPoint> GetAllPoint(string surveyDataFullName) { List<CPoint> pList = new List<CPoint>(); try { if (surveyDataFullName == null || surveyDataFullName == string.Empty) { MessageBox.Show("选择野外测量数据!"); return null; } if (!System.IO.File.Exists(surveyDataFullName)) { MessageBox.Show("野外测量数据不存在!"); } string strLine; char[] charArray = new char[] { ',' }; string[] strArray; System.IO.FileStream aFile = new System.IO.FileStream(surveyDataFullName, FileMode.Open); StreamReader sr = new StreamReader(aFile, Encoding.Default); strLine = sr.ReadLine(); strArray = strLine.Split(charArray); if (strArray.Length > 0) { for (int x = 0; x < strArray.Length; x++) { pColumns.Add(strArray[x]); } } else { return null; } strLine = sr.ReadLine(); while (strLine != null) { strArray = strLine.Split(charArray); CPoint pCpoint = new CPoint(); pCpoint.x = Convert.ToDouble(strArray[0]); pCpoint.y = Convert.ToDouble(strArray[1]); pCpoint.name = strArray[2].Trim(); pList.Add(pCpoint); strLine = sr.ReadLine(); } sr.Close(); } catch (Exception ex) { MessageBox.Show(ex.Message); } return pList; } /// <summary> /// 通过点创建shp文件 /// </summary> /// <param name="outfileNamePath">输出文件路径</param> /// <returns>创建的shp图层</returns> private IFeatureLayer CreateShpFromPoints(string outfileNamePath) { int index = outfileNamePath.LastIndexOf('\\'); string folder = outfileNamePath.Substring(0, index); shapeFileFullName = outfileNamePath.Substring(index + 1); IWorkspaceFactory pWSF = new ShapefileWorkspaceFactoryClass(); IFeatureWorkspace pFWS = (IFeatureWorkspace)pWSF.OpenFromFile(folder, 0); if(File.Exists(outfileNamePath)) { IFeatureClass featureClass = pFWS.OpenFeatureClass(shapeFileFullName); IDataset pDataset = (IDataset)featureClass; pDataset.Delete(); } IFields pFields = new FieldsClass(); IFieldsEdit pFieldsEdit; pFieldsEdit = (IFieldsEdit)pFields; IField pField = new FieldClass(); IFieldEdit pFieldEdit = (IFieldEdit)pField; pFieldEdit.Name_2 = "Shape"; pFieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry; IGeometryDef pGeometryDef = new GeometryDefClass(); IGeometryDefEdit pGDefEdit = (IGeometryDefEdit)pGeometryDef; pGDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPolygon; pFieldEdit.GeometryDef_2 = pGeometryDef; pFieldsEdit.AddField(pField); pField = new FieldClass(); pFieldEdit = (IFieldEdit)pField; pFieldEdit.Length_2 = 20; pFieldEdit.Name_2 = pColumns[2]; pFieldEdit.Type_2 = esriFieldType.esriFieldTypeString; pFieldsEdit.AddField(pField); IFeatureClass pFeatureClass; pFeatureClass = pFWS.CreateFeatureClass(shapeFileFullName, pFields, null, null, esriFeatureType.esriFTSimple, "Shape", ""); List<string> pBuildingList = new List<string>(); for (int i = 0; i < pCPointList.Count; i++) { if(pBuildingList.Contains(pCPointList[i].name.Trim()) == false) { pBuildingList.Add(pCPointList[i].name.Trim()); } } for (int i = 0; i < pBuildingList.Count; i++) { IPointCollection pPointColl = new PolygonClass(); object o = Type.Missing; for (int j = 0; j < pCPointList.Count; j++) { if (pCPointList[j].name.Trim() == pBuildingList[i].Trim()) { IPoint pPoint = new PointClass(); pPoint.X = pCPointList[j].x; pPoint.Y = pCPointList[j].y; pPointColl.AddPoint(pPoint, ref o, ref o); } } if (pPointColl.PointCount > 0) { IClone pClone = pPointColl.get_Point(0) as IClone; IPoint pEndPoint = pClone.Clone() as IPoint; pPointColl.AddPoint(pEndPoint, ref o, ref o); } IFeature pFeature = pFeatureClass.CreateFeature(); pFeature.Shape = pPointColl as IPolygon; pFeature.Store(); pFeature.set_Value(pFeature.Fields.FindField(pColumns[2]), pBuildingList[i].Trim()); pFeature.Store(); } IFeatureLayer pFeatureLayer = new FeatureLayerClass(); pFeatureLayer.FeatureClass = pFeatureClass; return pFeatureLayer; } private void btnCreate_Click(object sender, EventArgs e) { pCPointList = this.GetAllPoint(surveyDataFullName); IFeatureLayer pFeatureLayer = CreateShpFromPoints(shapeFileFullName); pFeatureLayer.Name = "建筑物"; //this.buddyMap.Map.AddLayer(pFeatureLayer); } private void btnCancel_Click(object sender, EventArgs e) { this.Close(); } } }
三、效果图
转载:http://blog.csdn.net/foreverling/article/details/34423583