DSP Blockset

Extract Diagonal

Purpose

Extract the main diagonal of the input matrix.

Library

Math Functions / Matrices and Linear Algebra / Matrix Operations

Description

The Extract Diagonal block populates the 1-D output vector with the elements on the main diagonal of the M-by-N input matrix A.

• D = diag(A)          Equivalent MATLAB code
  

The output vector has length min(M,N), and is always sample-based.

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Supported Data Types

• Double-precision floating point
• Single-precision floating point
• Fixed-point
• Custom data types
• Boolean -- Block outputs are always Boolean. To learn how to disable Boolean support, see Steps to Disabling Boolean Support.
• 8-, 16-, and 32-bit signed integers
• 8-, 16-, and 32-bit unsigned integers

To learn how to convert to the above data types in MATLAB and Simulink, see Supported Data Types and How to Convert to Them.

See Also

Constant Diagonal Matrix	DSP Blockset
Create Diagonal Matrix	DSP Blockset
Extract Triangular Matrix	DSP Blockset
diag	MATLAB

Also see Matrix Operations for a list of all the blocks in the Matrix Operations library.

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Extract Triangular Matrix