ENVIConfusionMatrix::ProducerAccuracy

The ProducerAccuracy function method returns a producer accuracy value. The result is an array with one value per class.

Producer accuracy is the probability that a value in a given class was classified correctly. In the example confusion matrix, producer accuracy is computed as follows:

Asphalt: 2385 / 2397 = 0.995

Concrete: 332 / 337 = 0.985

Grass: 908 / 908 = 1.0

Tree: 1084 / 1099 = 0.986

Building: 2053 / 2067 = 0.993

Example

See the following topics for code examples:

Syntax

Result = ENVIConfusionMatrix.ProducerAccuracy([, ERROR=variable])

Return Value

This function method returns the producer accuracy value from the confusion matrix.

Arguments

None

Keywords

ERROR (optional)

Set this keyword to a named variable that will contain any error message issued during execution of this routine. If no error occurs, the ERROR variable will be set to a null string (''). If an error occurs and the routine is a function, then the function result will be undefined.

When this keyword is not set and an error occurs, ENVI returns to the caller and execution halts. In this case, the error message is contained within !ERROR_STATE and can be caught using IDL's CATCH routine. See IDL Help for more information on !ERROR_STATE and CATCH.

See Manage Errors for more information on error handling in ENVI programming.

Version History

ENVI 5.4

Introduced

API Version

3.6