arcpy.UpdateCursor和arcpy.da.UpdateCursor计算面积时间的比较

arcpy.UpdateCursor

#######################
import arcpy
from arcpy import env
import os

import sys

fc= arcpy.GetParameterAsText(0)
filename= arcpy.GetParameterAsText(1)

rows = arcpy.UpdateCursor(fc)

#########################################
##
for row in rows:
    shape=row.shape
    parea=shape.area
    row.setValue(filename,parea)
    rows.updateRow(row)

del row
del rows

arcpy.da.UpdateCursor

import arcpy
from arcpy import env
import os

import sys

fc= arcpy.GetParameterAsText(0)
filename= arcpy.GetParameterAsText(1)
fields = (filename,‘[email protected]‘)

rows = arcpy.da.UpdateCursor(fc,fields)

#########################################
##
for row in rows:
    parea=row[1]
    #parea=shape.area
    row[0]=parea
    rows.updateRow(row)

del row
del rows

比较如下：

上面是1.22s，下面是0.25s，差5倍 gisoracle测试

另一个数据，11.85s,下面是1.8，差6倍 gisoracle测试

原文地址：https://www.cnblogs.com/gisoracle/p/11216534.html