摘要：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().
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
///
///
///
///
///
///
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.
