ArcEngine获取栅格图层的四角平面坐标： using System; using System.Collections.Generic; using System.Text; using System.IO; using ESRI.ArcGIS.ArcMapUI; using ESRI.ArcGIS.Carto; using System.Windows.Forms; using ESRI.ArcGIS.Editor; using ESRI.ArcGIS.Geodatabase; using ESRI.ArcGIS; using ESRI.ArcGIS.Geometry; using ESRI.ArcGIS.GISClient; using ESRI.ArcGIS.esriSystem; using ESRI.ArcGIS.Output; using ESRI.ArcGIS.Geoprocessor; using ESRI.ArcGIS.DataSourcesRaster; using ESRI.ArcGIS.DataSourcesGDB; public static void GetRasterXY(IRasterLayer raster, ISpatialReference project,out IPoint zuoshang,out IPoint youshang,out IPoint zuoxia,out IPoint youxia)//project的作用为：如果栅格是地理坐标系，则用project计算平面坐标，输出四 个角的IPoint { IRasterProps pRasterProps = (IRasterProps)raster.Raster; ESRI.ArcGIS.Geometry.IPoint pzuoshang = new PointClass(); ESRI.ArcGIS.Geometry.IPoint pyoushang = new PointClass(); ESRI.ArcGIS.Geometry.IPoint pzuoxia = new PointClass(); ESRI.ArcGIS.Geometry.IPoint pyouxia = new PointClass(); if (pRasterProps.Extent.SpatialReference is IGeographicCoordinateSystem) { double xmax,xmin,ymax,ymin; GeoXYproject(pRasterProps.Extent.XMax, pRasterProps.Extent.YMin, project, pRasterProps.Extent.SpatialReference, out xmax, out ymin); GeoXYproject(pRasterProps.Extent.XMin, pRasterProps.Extent.YMax, project, pRasterProps.Extent.SpatialReference, out xmin, out ymax); pzuoshang.SpatialReference = project; pzuoshang.PutCoords(xmax,ymin); pyoushang.SpatialReference = project; 

pyoushang.PutCoords(xmax, ymax); pzuoxia.SpatialReference = project; pzuoxia.PutCoords(xmin, ymin); pyouxia.SpatialReference = project; pyouxia.PutCoords(xmin, ymax); } else { pzuoshang.SpatialReference = pRasterProps.Extent.SpatialReference; pzuoshang.PutCoords(pRasterProps.Extent.XMax, pRasterProps.Extent.YMin); pyoushang.SpatialReference = pRasterProps.Extent.SpatialReference; pyoushang.PutCoords(pRasterProps.Extent.XMax, pRasterProps.Extent.YMax); pzuoxia.SpatialReference = pRasterProps.Extent.SpatialReference; pzuoxia.PutCoords(pRasterProps.Extent.XMin, pRasterProps.Extent.YMin); pyouxia.SpatialReference = pRasterProps.Extent.SpatialReference; pyouxia.PutCoords(pRasterProps.Extent.XMin, pRasterProps.Extent.YMax); } zuoshang = pzuoshang; youshang = pyoushang; zuoxia = pzuoxia; youxia = pyouxia; } public static void GeoXYproject(double X, double Y, ISpatialReference project, ISpatialReference geo, out double ox, out double oy)//第一个方法的辅助 方法，如果栅格是地理坐标系则调用这个方法转换坐标，project代表投影坐标，geo代表栅 格的地理坐标 { ESRI.ArcGIS.Geometry.IPoint point = new PointClass(); point.SpatialReference = geo; point.PutCoords(X, Y); 

point.Project(project); point.QueryCoords(out ox, out oy); }