vector-matrix/src/Math-Matrix/PMJacobiTransformationHelper.class.st at 163f69deaabe22542520d248a6a70c6566283fd5 · DurieuxPol/vector-matrix · GitHub

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"
I store eigenvalues and eigenvectors of a symmetric matrix computed with PMJacobiTransformation
"
Class {
	#name : 'PMJacobiTransformationHelper',
	#superclass : 'Object',
	#instVars : [
		'eigenvalues',
		'eigenvectors'
	],
	#category : 'Math-Matrix',
	#package : 'Math-Matrix'
}

{ #category : 'creation' }
PMJacobiTransformationHelper class >> matrix: aSymmetricMatrix [
	^ super new initialize: aSymmetricMatrix
]

{ #category : 'creation' }
PMJacobiTransformationHelper class >> new [
	"Prevent using this message to create instances."

	^ self error: 'Illegal creation message for this class'
]

{ #category : 'initialization' }
PMJacobiTransformationHelper >> initialize: aSymmetricMatrix [

	| jacobi |
	jacobi := PMJacobiTransformation matrix: aSymmetricMatrix.
	eigenvalues := jacobi evaluate.
	eigenvectors := jacobi transform columnsCollect: [ :each | each].
]

{ #category : 'accessing' }
PMJacobiTransformationHelper >> values [

	^ eigenvalues
]

{ #category : 'accessing' }
PMJacobiTransformationHelper >> vectors [

	^ eigenvectors
]