/// <summary>
/// 以前的代码
/// </summary>
/// <param name="dsmDs"></param>
/// <param name="oriFeat"></param>
/// <param name="bufFeat"></param>
/// <param name="subRasterOff_Size"></param>
private static void getMaxMinValue_(OSGeo.GDAL.Dataset dsmDs, OSGeo.OGR.Feature oriFeat, OSGeo.OGR.Feature bufFeat, int[] subRasterOff_Size)
{
//拿到当前Feature对应的栅格值（数组）
double[] rastValue = new double[subRasterOff_Size[2] * subRasterOff_Size[3]];
//拿到全局Transfrom
double[] Transfrom = new double[6];
dsmDs.GetGeoTransform(Transfrom);
//把SUBimg的值读进数组
dsmDs.GetRasterBand(1).ReadRaster(
subRasterOff_Size[0],
subRasterOff_Size[1],
subRasterOff_Size[2],
subRasterOff_Size[3],
rastValue,
subRasterOff_Size[2],
subRasterOff_Size[3],
0, 0);
OSGeo.OGR.Geometry oriGeom = oriFeat.GetGeometryRef();
string ddd = oriFeat.GetFieldAsString("MAX");
while (oriFeat.GetFieldAsString("MAX") == "")
{
//拿到数组中最大值的索引
int maxId = Array.IndexOf(rastValue, rastValue.Max());
//通过索引拿到空间坐标
double maxX, maxY;
StaticTools.indexToGeoSpace(maxId, subRasterOff_Size, Transfrom, out maxX, out maxY);
//把空间坐标写进Geomtry
OSGeo.OGR.Geometry maxGeom = new OSGeo.OGR.Geometry(OSGeo.OGR.wkbGeometryType.wkbPoint);
maxGeom.AddPoint_2D(maxX, maxY);
//判断坐标是否在Feature中，在则把值写入对应字段，不在则把当前值改为平均值
if (maxGeom.Within(oriGeom))
{
oriFeat.SetField("MAX", rastValue.Max());
}
else
{
rastValue[maxId] = rastValue.Average();
}
}
string dd = oriFeat.GetFieldAsString("MIN");
while (oriFeat.GetFieldAsString("MIN") == "")
{
//拿到数组中最小值的索引
double ffdf = rastValue.Min();
int minId = Array.IndexOf(rastValue, rastValue.Min());
//通过索引拿到空间坐标
double minX, minY;
StaticTools.indexToGeoSpace(minId, subRasterOff_Size, Transfrom, out minX, out minY);
//把空间坐标写进Geomtry
OSGeo.OGR.Geometry minGeom = new OSGeo.OGR.Geometry(OSGeo.OGR.wkbGeometryType.wkbPoint);
minGeom.AddPoint_2D(minX, minY);
//判断坐标是否在Feature中，在则把值写入对应字段，不在则把当前值改为平均值
OSGeo.OGR.Geometry bufGeom = bufFeat.GetGeometryRef();
if (minGeom.Within(bufGeom))
{
oriFeat.SetField("MIN", rastValue.Min());
}
else
{
rastValue[minId] = rastValue.Average();
}
}
double max = oriFeat.GetFieldAsDouble("MAX");
double min = oriFeat.GetFieldAsDouble("MIN");
oriFeat.SetField("HIGHT", max - min);
}