diag

Get diagonal elements of matrix or create diagonal matrix.

Syntax

  • D = diag(V)

  • X = diag(A)

  • D = diag(V, k)

  • X = diag(A, k)

Input argument

  • V - Diagonal elements

  • A - Input matrix

Output argument

  • D - vector

  • X - matrix

Description

diag returns diagonal elements of matrix or create diagonal matrix.

Example

diag(eye(3))
diag(diag(eye(3)))

See also

ones.

History

Author

Allan CORNET

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