CrossValidationResult

概要

The CrossValidationResult class is returned by the Cross Validation tool and contains access to the cross-validation results that can be generated for any geostatistical layer.

ディスカッション

The CrossValidationResult class is similar to the Result class except for the additional read-only properties that it contains. For detailed help, see the Cross Validation tool.

Only the mean and root mean square error results are available for IDW, Global Polynomial Interpolation, Radial Basis Functions, Diffusion Interpolation With Barriers, and Kernel Interpolation With Barriers.

Percent in 90% Interval, Percent in 95% Interval, and Average CRPS are only available for Empirical Bayesian Kriging and EBK Regression Prediction models.

プロパティ

プロパティ説明データ タイプ
averageCRPS
(読み取り専用)

The average of the Continuous Ranked Probability Scores (CRPS) for all points.

Double
averageStandard
(読み取り専用)

The average of the prediction standard errors.

Double
count
(読み取り専用)

The number of input samples.

Long
inputCount
(読み取り専用)

Returns the number of inputs.

Integer
maxSeverity
(読み取り専用)

Returns the maximum severity of the messages.

  • 0If the tool produced only informative messages.
  • 1 If the tool produced a warning message, but no error messages.
  • 2 If the tool produced an error message.
Integer
meanError
(読み取り専用)

The averaged difference between the measured and the predicted values.

Double
meanStandardized
(読み取り専用)

Mean standardized error.

Double
messageCount
(読み取り専用)

Returns the number of messages.

Integer
outputCount
(読み取り専用)

Returns the number of outputs.

Integer
percentIn90Interval
(読み取り専用)

The percentage of points that are contained in a 90 percent cross validated confidence interval.

Double
percentIn95Interval
(読み取り専用)

The percentage of points that are contained in a 95 percent cross validated confidence interval.

Double
resultID
(読み取り専用)

Gets the job ID. If the tool is not a geoprocessing service, the resultID will be "".

String
rootMeanSquare
(読み取り専用)

The root mean square error.

Double
rootMeanSquareStandardized
(読み取り専用)

The root-mean-square-standardized error should be close to 1 if the prediction standard errors are valid. If the root-mean-square-standardized error is greater than 1, you are underestimating the variability in your predictions. If the root-mean-square-standardized error is less than 1, you are overestimating the variability in your predictions.

Double
status
(読み取り専用)

Gets the job status.

  • 0New
  • 1Submitted
  • 2Waiting
  • 3Executing
  • 4Succeeded
  • 5Failed
  • 6Timed out
  • 7Cancelling
  • 8Cancelled
  • 9Deleting
  • 10Deleted
Integer

手法の概要

手法説明
cancel ()

Cancels an associated job

getInput (index)

Returns a given input, either as a recordset or string.

getMapImageURL ({parameter_list}, {height}, {width}, {resolution})

Gets a map service image for a given output, if one exists.

getMessage (index)

Returns a specific message.

getMessages ({severity})

Returns messages.

getOutput (index)

Returns a given output, either as a string or a RecordSet.

If the output of the tool, such as Make Feature Layer, is a layer, getOutput will return a Layer object.

getSeverity (index)

Returns the severity of a specific message.

手法

cancel ()
getInput (index)
パラメーター説明データ タイプ
index

The index position of the input.

Integer
戻り値
データ タイプ説明
Object

The input, either as a recordset or string.

getMapImageURL ({parameter_list}, {height}, {width}, {resolution})
パラメーター説明データ タイプ
parameter_list

Parameter(s) on which the map service image will be based.

Integer
height

The height of the image.

Double
width

The width of the image.

Double
resolution

The resolution of the image.

Double
戻り値
データ タイプ説明
String

The URL of the map image.

getMessage (index)
パラメーター説明データ タイプ
index

The index position of the message.

Integer
戻り値
データ タイプ説明
String

The geoprocessing message.

getMessages ({severity})
パラメーター説明データ タイプ
severity

The type of messages to be returned: 0=message, 1=warning, 2=error. Not specifying a value returns all message types.

  • 0informational message
  • 1warning message
  • 2error message

(デフォルト値は次のとおりです 0)

Integer
戻り値
データ タイプ説明
String

The geoprocessing messages.

getOutput (index)
パラメーター説明データ タイプ
index

The index position of the outputs.

Integer
戻り値
データ タイプ説明
Object

The output, either as a recordset or a string.

If the output of the tool, such as Make Feature Layer, is a layer, getOutput will return a Layer object.

Result outputs can also be accessed by index, so result.getOutput(0) and result[0] are equivalent.

getSeverity (index)
パラメーター説明データ タイプ
index

The message index position.

Integer
戻り値
データ タイプ説明
Integer

The severity of the specific message.

  • 0informational message
  • 1warning message
  • 2error message

コードのサンプル

CrossValidation (Python window)

Perform cross-validation on an input geostatistical layer.

import arcpy
arcpy.env.workspace = "C:/gapyexamples/data"
cvResult = arcpy.CrossValidation_ga("C:/gapyexamples/data/kriging.lyr")
print("Root Mean Square error = " + str(cvResult.rootMeanSquare))
CrossValidation (stand-alone script)

Perform cross-validation on an input geostatistical layer.

# Name: CrossValidation_Example_02.py
# Description: Perform cross validation on an input geostatistical layer.
# Requirements: Geostatistical Analyst Extension

# Import system modules
import arcpy

# Set environment settings
arcpy.env.workspace = "C:/gapyexamples/data"

# Set local variables
inLayer = "C:/gapyexamples/data/kriging.lyr"

# Execute CrossValidation
cvResult = arcpy.CrossValidation_ga(inLayer)
print("Root Mean Square error = " + str(cvResult.rootMeanSquare))