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  • Bug fixes for general core bugs in 4.0.x will end 8 May 2023 (12 months).
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/lib/phpspreadsheet/vendor/markbaker/matrix/classes/src/Decomposition/ -> QR.php (source)

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File Size: 191 lines (6 kb)
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Referenced: 0 times
Includes or requires: 0 files

Defines 1 class

QR:: (8 methods):
  __construct()
  getHouseholdVectors()
  getQ()
  getR()
  hypo()
  decompose()
  isFullRank()
  solve()


Class: QR  - X-Ref

__construct(Matrix $matrix)   X-Ref
No description

getHouseholdVectors()   X-Ref
No description

getQ()   X-Ref
No description

getR()   X-Ref
No description

hypo($a, $b)   X-Ref
No description

decompose()   X-Ref
QR Decomposition computed by Householder reflections.


isFullRank()   X-Ref
No description

solve(Matrix $B)   X-Ref
Least squares solution of A*X = B.

return: Matrix matrix that minimizes the two norm of Q*R*X-B
param: Matrix $B a Matrix with as many rows as A and any number of columns