Résumé
Determines the type and seed that will be used to create random numbers between 0 and 1 for all tools that utilize random numbers, for example, CreateRandomRaster, CreateRandomPoints, and the ArcGIS.Rand() function.
Returned from the randomGenerator environment.
Vue d’ensemble des méthodes
| Méthode | Explication |
| exportToString () | Exports the object to its string representation. |
| loadFromString (string) | Restore the object using its string representation. The exportToString method can be used to create a string representation. |
Méthodes
exportToString ()
Valeur renvoyée
| Type de données | Explication |
| String | The string representation of the object. |
loadFromString (string)
| Paramètre | Explication | Type de données |
string | The string representation of the object. | String |
Exemple de code
RandomNumberGenerator example
Demonstrate how to create a random number generator object.
import arcpy
# Cannot create RandomNumberGenerator object directly,
# but is returned from CreateRandomValueGenerator function.
#
# CreateRandomValueGenerator takes 2 arguments, seed and distribution
# method. The distribution method options are ACM599,
# MERSENNE_TWISTER, STANDARD_C.
#
# The gen variable is a randomNumberGenerator object that is assigned
# to the randomGenerator environments setting.
#
arcpy.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')")
# Get the value from the result object and print it to the Python window.
val = float(result.getOutput(0))
print(val)