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获取点坐标和高程(C# +ArcEngine93)

获取点坐标和高程(C# +ArcEngine93)程序说明:1.需要一个带坐标系的栅格数据.2.关键程序很简单,用关键接口ISurface,方法用ISurface.GetElevation(). 程序下载关键代码如下: /// /// 获取x,y,高程值 /// /// ...

获取点坐标和高程(C# +ArcEngine93)

程序说明:
1.需要一个带坐标系的栅格数据.
2.关键程序很简单,用关键接口ISurface,方法用ISurface.GetElevation().

关键代码如下:

/// <summary>
/// 获取x,y,高程值
/// </summary>
/// <param name="raster"></param>
/// <param name="point"></param>
/// <param name="ptX"></param>
/// <param name="ptY"></param>
/// <param name="ptHeight"></param>
void getXYAndHeight(IRaster raster, IPoint point, out double ptX, out double ptY, out double ptHeight)
{
ptX = 0.0;
ptY = 0.0;
ptHeight = 0.0;
try
{
IGeoDataset geoDt = raster as IGeoDataset;
ISpatialReference spatialreference = geoDt.SpatialReference;
IRasterSurface rasterSurface = new RasterSurfaceClass();
rasterSurface.PutRaster(raster, 0);
ISurface surface = rasterSurface as ISurface;
if (point.SpatialReference == null)
{
point.Project(spatialreference);
ptX = point.X;
ptY = point.Y;
//获取高程
ptHeight = surface.GetElevation(point);
}
else
{
ptX = point.X;
ptY = point.Y;
//获取高程
point.Project(spatialreference);
ptHeight = surface.GetElevation(point);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}

复制代码

希望能给初学者一点帮助.
程序做得不是很完善,欢迎各位修改,提意见.