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来源：互联网发布：海马模拟器 for mac 编辑：程序博客网时间：2024/06/02 05:23
根据博客园-迈腾加多宝的文章进行的改进http://www.cnblogs.com/changxy/p/4223948.html。
对大数据量的点生成Shap图层代码如下：
C#代码如下，希望对大家有帮助，有什么问题可以留言讨论
  private void CreateShpFromPointList(List<CPoint> cPointList, string OutputFileName)        {            if (cPointList.Count == 0)            {                MessageBox.Show("输出的数据为空，请检查数据重试！");                return;            }            string GpsFileName;            string GpsFileFolder;            IFeatureClass pFeatureClass;            GpsFileName = System.IO.Path.GetFileName(OutputFileName);            GpsFileFolder = System.IO.Path.GetDirectoryName(OutputFileName);            //创建工作空间            IWorkspaceFactory pWorkspaceFactory = new ShapefileWorkspaceFactory();            IFeatureWorkspace pFeatureWorkspace = (IFeatureWorkspace)pWorkspaceFactory.OpenFromFile(GpsFileFolder, 0);            //创建地理参考坐标WGS1984            ISpatialReferenceFactory pSpatialReferenceFactory = new SpatialReferenceEnvironmentClass();            IGeographicCoordinateSystem pGCS = new GeographicCoordinateSystemClass();            pGCS = pSpatialReferenceFactory.CreateGeographicCoordinateSystem((int)esriSRGeoCSType.esriSRGeoCS_WGS1984);            ISpatialReference pSpatialReference = pGCS;            if (File.Exists(OutputFileName))            {                pFeatureClass = pFeatureWorkspace.OpenFeatureClass(GpsFileName);                IDataset pDataset = pFeatureClass as IDataset;                pDataset.Delete();            }            //创建字段            IFields pFields = new FieldsClass();            IFieldsEdit pFieldsEdit = (IFieldsEdit)pFields;            IField pField = new FieldClass();            IFieldEdit pFieldEdit = (IFieldEdit)pField;            pFieldEdit.Name_2 = "SHAPE";            pFieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry;            IGeometryDefEdit pGeoDef = new GeometryDefClass();            IGeometryDefEdit pGeoDefEdit = (IGeometryDefEdit)pGeoDef;            pGeoDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPoint;            pGeoDefEdit.SpatialReference_2 = pSpatialReference;            pFieldEdit.GeometryDef_2 = pGeoDef;            pFieldsEdit.AddField(pField);            pField = new FieldClass();            pFieldEdit = (IFieldEdit)pField;            pFieldEdit.Name_2 = "序号";            pFieldEdit.Type_2 = esriFieldType.esriFieldTypeString;            pFieldsEdit.AddField(pField);            pField = new FieldClass();            pFieldEdit = (IFieldEdit)pField;            pFieldEdit.Name_2 = "X";            pFieldEdit.Type_2 = esriFieldType.esriFieldTypeDouble;            pFieldsEdit.AddField(pField);            pField = new FieldClass();            pFieldEdit = (IFieldEdit)pField;            pFieldEdit.Name_2 = "Y";            pFieldEdit.Type_2 = esriFieldType.esriFieldTypeDouble;            pFieldsEdit.AddField(pField);            pField = new FieldClass();            pFieldEdit = (IFieldEdit)pField;            pFieldEdit.Name_2 = "Z";            pFieldEdit.Type_2 = esriFieldType.esriFieldTypeDouble;            pFieldsEdit.AddField(pField);            pFeatureClass = pFeatureWorkspace.CreateFeatureClass(GpsFileName, pFields, null, null, esriFeatureType.esriFTSimple, "SHAPE", "");            string name;            double dx;            double dy;            double dz;            IPoint point;            IFeatureBuffer pFeatureBuffer = pFeatureClass.CreateFeatureBuffer();            IFeatureCursor pFeatureCursor = pFeatureClass.Insert(true);            for (int i = 0; i < cPointList.Count; i++)            {                point = new PointClass();                name = cPointList[i].Name;                dx = cPointList[i].X;                dy = cPointList[i].Y;                dz = cPointList[i].Z;                point.X = cPointList[i].X;                point.Y = cPointList[i].Y;                point.Z = cPointList[i].Z;                pFeatureBuffer.Shape = point;                pFeatureBuffer.set_Value(pFeatureBuffer.Fields.FindField("序号"), name);                pFeatureBuffer.set_Value(pFeatureBuffer.Fields.FindField("X"), dx);                pFeatureBuffer.set_Value(pFeatureBuffer.Fields.FindField("Y"), dy);                pFeatureBuffer.set_Value(pFeatureBuffer.Fields.FindField("Z"), dz);                pFeatureCursor.InsertFeature(pFeatureBuffer);            }        }
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