ArcEngine GP 环境变量的疑惑

ArcEngine版本：10.2.2
GP工具：ESRI.ArcGIS.ConversionTools.PolygonToRaster
问题描述：我在用面转栅格工具输出【Grid格式】的栅格数据，设置了GP工具的环境变量“输出坐标系统”（outputCoordinateSystem）,但是运行GP工具后的数据坐标系变成了自定义，这块请看下面的补充的截图。
用到的代码：
代码段1：

        /// <summary>

        /// 获取坐标系信息字符串

        /// </summary>

        /// <param name="pSpatialReference">输入坐标系</param>

        /// <returns>坐标系信息字符串</returns>

        public static string GetSpatialReferenceStr(ISpatialReference pSpatialReference)

        {

            string spatialReferenceStr = string.Empty;

            if (pSpatialReference.Name == "Unknown")

            {

                spatialReferenceStr = "none";

            }

            else

            {

                IESRISpatialReferenceGEN esriSpatialReference = new GeographicCoordinateSystemClass();

                esriSpatialReference = pSpatialReference as IESRISpatialReferenceGEN;

                string coordSysStr = string.Empty;

                int cBytesWrote;

                esriSpatialReference.ExportToESRISpatialReference(out coordSysStr, out cBytesWrote);

                spatialReferenceStr = coordSysStr;

            }

            return spatialReferenceStr;

        }

        

        

	if (sMillionTfh.Equals("J50", StringComparison.CurrentCultureIgnoreCase) ||

	    sMillionTfh.Equals("K50", StringComparison.CurrentCultureIgnoreCase))

	{

	    pSpatialReference = pSpatialReferenceFactory.CreateProjectedCoordinateSystem(4509);

	}

	else

	{

	    pSpatialReference = pSpatialReferenceFactory.CreateProjectedCoordinateSystem(4510);

	}                    

	string sPrjInfo = PS.Plot.Common.EngineAPI.GetSpatialReferenceStr(pSpatialReference);

	GpOperate.instance.geoProcessor.SetEnvironmentValue("outputCoordinateSystem", sPrjInfo);

代码段2：

ISpatialReferenceFactory3 spatialrefFactory = new SpatialReferenceEnvironmentClass();

spatialrefFactory.ExportESRISpatialReferenceInfoToPRJFile(@"D:\1.prj", pSpatialReference);

GpOperate.instance.geoProcessor.SetEnvironmentValue("outputCoordinateSystem", @"D:\1.prj");

两种方法效果是一样的，最终的结果坐标系都是自定义的，我用arcmap操作同样的的工具设置输出坐标系，结果坐标系就不是自定义的，这块我不知道我哪儿一步操作错了？？
我的问题简单的说就是：我想让工具输出的坐标系和我outputCoordinateSystem设置的坐标系是一致的，但是现在不一致，输出后坐标系变成自定义的了

这两张图片都是代码输出的数据的坐标系，一个是设置的2000地理坐标系，一个是设置的2000 的高斯投影坐标系。

3 个回复

刘峥 - ArcGIS多面手

1. set以后get，设置成功了吗？
2. 直接用.prj文件里的字符串试试？

gp.SetEnvironmentValue("outputCoordinateSystem", "PROJCS['NAD_1983_UTM_Zone_11N',GEOGCS['GCS_North_American_1983',DATUM['D_North_American_1983',SPHEROID['GRS_1980',6378137.0,298.257222101]],PRIMEM['Greenwich',0.0],UNIT['Degree',0.0174532925199433]],PROJECTION['Transverse_Mercator'],PARAMETER['False_Easting',500000.0],PARAMETER['False_Northing',0.0],PARAMETER['Central_Meridian',-117.0],PARAMETER['Scale_Factor',0.9996],PARAMETER['Latitude_Of_Origin',0.0],UNIT['Meter',1.0]]")

YoungHappy

这个是1.prj文件的内容
PROJCS["CGCS2000_GK_CM_117E",GEOGCS["GCS_China_Geodetic_Coordinate_System_2000",DATUM["D_China_2000",SPHEROID["CGCS2000",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Gauss_Kruger"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",117.0],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",4509]]