LowestPosition

摘要

创建栅格对象，其中每个像素包含栅格集中具有最小值的栅格的位置。

说明

有关此函数工作原理的详细信息，请参阅最低位置工具。

栅格对象所引用的栅格数据集是临时性的。 要将其设置为永久，可以调用栅格对象的 save 方法。

语法

LowestPosition (rasters, {extent_type}, {cellsize_type})

参数	说明	数据类型
rasters [rasters,...]	The list of input rasters.	Raster
extent_type	The method that will be used to compute the extent of the output when the input rasters have different extents. FirstOf—The output extent will be defined using the extent of the first input raster. LastOf—The output extent will be defined using the extent of the last input raster. IntersectionOf—The output extent will be defined as the intersecting area of the input rasters. UnionOf—The output extent will be defined as the total extent of the input rasters. (默认值为 FirstOf)	String
cellsize_type	The method that will be used to compute the pixel size of the output when the input rasters have different pixel sizes. FirstOf—The output pixel size will be defined using the pixel size of the first input raster. LastOf—The output pixel size will be defined using the pixel size of the last input raster. MaxOf—The output pixel size will be defined using the maximum pixel size of the input rasters. MeanOf—The output pixel size will be defined using the mean of both input rasters. MinOf—The output pixel size will be defined using the minimum pixel size of the input rasters. (默认值为 FirstOf)	String

返回值

数据类型	说明
Raster	输出栅格。

代码示例

LowestPosition 示例

计算输入栅格集中具有最小值的栅格。

# Import system modules
import arcpy
from arcpy.ia import *

#Set the local variables
rasters = [r"c:\temp\raster1.tif", r"c:\temp\raster2.tif", r"c:\temp\raster3.tif"] 

#Execute
Lowest_raster = LowestPosition(rasters, "UnionOf", "FirstOf")