CrossValidationResult

Zusammenfassung

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.

Auswertung

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.

Eigenschaften

EigenschaftErklärungDatentyp
averageCRPS
(Nur lesen)

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

Double
averageStandard
(Nur lesen)

The average of the prediction standard errors.

Double
count
(Nur lesen)

The number of input samples.

Long
inputCount
(Nur lesen)

Returns the number of inputs.

Integer
maxSeverity
(Nur lesen)

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
(Nur lesen)

The averaged difference between the measured and the predicted values.

Double
meanStandardized
(Nur lesen)

Mean standardized error.

Double
messageCount
(Nur lesen)

Returns the number of messages.

Integer
outputCount
(Nur lesen)

Returns the number of outputs.

Integer
percentIn90Interval
(Nur lesen)

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

Double
percentIn95Interval
(Nur lesen)

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

Double
resultID
(Nur lesen)

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

String
rootMeanSquare
(Nur lesen)

The root mean square error.

Double
rootMeanSquareStandardized
(Nur lesen)

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
(Nur lesen)

Gets the job status.

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

Methodenübersicht

MethodeErklärung
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.

Methoden

cancel ()
getInput (index)
ParameterErklärungDatentyp
index

The index position of the input.

Integer
Rückgabewert
DatentypErklärung
Object

The input, either as a recordset or string.

getMapImageURL ({parameter_list}, {height}, {width}, {resolution})
ParameterErklärungDatentyp
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
Rückgabewert
DatentypErklärung
String

The URL of the map image.

getMessage (index)
ParameterErklärungDatentyp
index

The index position of the message.

Integer
Rückgabewert
DatentypErklärung
String

The geoprocessing message.

getMessages ({severity})
ParameterErklärungDatentyp
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

(Der Standardwert ist 0)

Integer
Rückgabewert
DatentypErklärung
String

The geoprocessing messages.

getOutput (index)
ParameterErklärungDatentyp
index

The index position of the outputs.

Integer
Rückgabewert
DatentypErklärung
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)
ParameterErklärungDatentyp
index

The message index position.

Integer
Rückgabewert
DatentypErklärung
Integer

The severity of the specific message.

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

Codebeispiel

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))