IPoilygon转IPoint

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private void 河流面转点ToolStripMenuItem_Click(object sender, EventArgs e) { ESRI.ArcGIS.Geodatabase.IWorkspaceFactory wsf = new ESRI.ArcGIS.DataSourcesFile.ShapefileWorkspaceFactory(); IWorkspace ws = wsf.OpenFromFile(); IFeatureClass autoStation = (ws a…

List<IPoint> to IPointCollection to IPolygon

IPointCollection 到 IPolygon的转换 IPoint pPoint = new PointClass(); //IPolygon pPolygon1 = new PolygonClass(); IPointCollection pPointCollection1 = new PolygonClass(); object _missing = Type.Missing; double x, y; …

找个输入IPoint在某个FeatureClass上距离最近的要素

/// <summary> /// 得到输入点在输入图层上的最近点 /// </summary> /// <param name="randomPoints">输入的点,注意小数位数不能太长,具体支持多长没有测试,我用小数点2位可以成功,但是七八位肯定不行</param> /// <param name="feaPoints">输出在featureclass上距离最近的要素,这里是点类型输出的是点<…

IPoint从自定义的投影坐标系转换到自定义的地理坐标系

IPoint pointStart = new PointClass(); pointStart = xyPolyline.FromPoint; ISpatialReferenceFactory pSpatialRefFtry = new SpatialReferenceEnvironmentClass(); ISpatialReference fromSpatialRef = pSpatialRefFtry.CreateESRISpatialReferenceFromPRJFile(Appli…

判断IFeatureClass图形是否含有Z值信息，若有为IPoint赋Z值

判断IFeatureClass图形是否含有Z值信息 IFeatureClass featureClass = this.pLayer.FeatureClass; string shapeFieldName = featureClass.ShapeFieldName; if (featureClass.Fields.get_Field(featureClass.FindField(shapeFieldName)).GeometryDef.HasZ) { this.hasZ = true; } 若有…

IPoint Interface接口

Description A Point is a zero-dimensional object that represents a specific (X, Y) location in a the two-dimensional XY-Plane. A Point may also have Z, M, and ID attributes associated with it. Existence of attributes does not alter the dimensionali…

ArcGIS Engine开发之鹰眼视图

鹰眼是GIS软件的必备功能之一.它是一个MapControl控件,主要用来表示数据视图中的地理范围在全图中的位置. 鹰眼一般具有的功能: 1)鹰眼视图与数据视图的地理范围保持同步. 2)数据视图的当前范围能够在鹰眼视图中用一个矩形框标示出来.若数据视图的显示范围发生变化,鹰眼视图中的矩形框位置也会发生变化. 3)在鹰眼中操作视图,数据视图中的地理范围也将同步调整.当鹰眼中用鼠标点击时,数据视图能够移动到被点击的位置.拖动矩形框可以调整数据视图中的地图显示范围:在鹰眼视图上拖动矩形框时,数据视图能…