ArcGIS中線分割面

1、在ArcMAP中操作。

        在編輯狀態下,選中所有的線，然後使用高級編輯工具條上的Split Polygons即可，參見下圖。

2、IFeatureConstruction接口

該接口發佈與適用於ArcGIS 9.3中，9.2 版本也存在。以下是IFeatureConstruction接口參數：
      IEnumFeature：它將是構造多邊形的線源。
      Processing bounds：處理範圍，目標面範圍。
      invalidArea：無效的區域對象，它是可選的，可用於重繪受處理影響的區域-在某些情況下，可能需要使無效的區域有效，以便相關特徵（註釋，路徑符號等）正確重繪。
      ClusterTolerance：該值必須至少與與目標面要素類關聯的空間參考的聚類容差一樣大。可以爲該參數傳遞值–1，表示將使用目標要素類的空間參考。

/// <summary>
/// 地圖控件中選中線分割面
/// </summary>
public static void SplitPolygonsWithLines()
{
    IFeatureLayer polygonLayer = axMapControl1.get_Layer(1) as IFeatureLayer;
    IFeatureClass polygonFeatureClass = polygonLayer.FeatureClass;
    IEnvelope envelope = (polygonFeatureClass as IGeoDataset).Extent;
    IEnumFeature enumLineFeature = axMapControl1.Map.FeatureSelection as IEnumFeature;
    IFeatureConstruction featureCon = new FeatureConstructionClass();
    featureCon.SplitPolygonsWithLines(null, polygonFeatureClass, envelope, enumLineFeature, null, -1);
}

/// <summary>
/// 線圖層切割面圖層
/// </summary>
/// <param name="polygonFC">面圖層</param>
/// <param name="lineFC">線圖層</param>
public static void SplitPolygonsWithLinesFromCursor(IFeatureClass polygonFC, IFeatureClass lineFC)
{
    //Set IFeatureCursor object, which will be the line source to construct polygons.
    IFeatureCursor lineFeatureCursor = lineFC.Search(null, false);

    //Set the processing bounds to be the extent of the polygon feature class,
    //which will be used to search for existing polygons in the target feature.
    IGeoDataset geoDS = polygonFC as IGeoDataset;
    IEnvelope processingBounds = geoDS.Extent;

    //Define an IInValidArea object.
    IInvalidArea invalidArea = new InvalidAreaClass();

    //Define a construct feature object.
    IFeatureConstruction featureConstruction = new FeatureConstructionClass();

    //Start an edit session.
    IDataset dataset = polygonFC as IDataset;
    IWorkspace workspace = dataset.Workspace;
    IWorkspaceEdit workspaceEdit = workspace as IWorkspaceEdit;
    if (workspaceEdit.IsBeingEdited() != true)
    {
        workspaceEdit.StartEditing(true);
        workspaceEdit.StartEditOperation();
    }
    try
    {
        featureConstruction.SplitPolygonsWithLinesFromCursor(null, polygonFC, processingBounds, lineFeatureCursor, invalidArea, -1);

        //Complete the edit operation and stop the edit session.
        workspaceEdit.StopEditOperation();
        workspaceEdit.StopEditing(true);
    }
    catch (Exception e)
    {
        //Abort the edit operation if errors are detected.
        System.Console.WriteLine("Construct polygons failed. " + e.Message);
        workspaceEdit.AbortEditOperation();
    }
}