CreateRandomValueGenerator (arcpy)
摘要
创建新的随机数生成器。
语法
CreateRandomValueGenerator (seed, distribution)
参数 | 说明 | 数据类型 |
seed |
Initializes the random number generator. | Integer |
distribution |
The random generation algorithm.
(默认值为 ACM599) | String |
数据类型 | 说明 |
Object |
RandomNumberGenerator 对象。 |
代码实例
CreateRandomValueGenerator 示例
创建并初始化随机数生成器对象。
import arcpy
from arcpy import env
# CreateRandomValueGenerator takes 2 arguments, seed and distribution method.
# The distribution method options are ACM599, MERSENNE_TWISTER,
# and STANDARD_C.
#
# The gen variable is a randomNumberGenerator object that is assigned to
# the randomGenerator environments setting.
#
env.randomGenerator = arcpy.CreateRandomValueGenerator(20, "STANDARD_C")
# Calculate a random number using the ArcGIS.Rand() function
#
result = arcpy.CalculateValue_management("arcgis.rand('normal 0.0 10.0')")
# Print the returned value from the Result object
#
val = float(result.getOutput(0))
print val
相关主题
9/15/2013