Scilab Home page | Wiki | Bug tracker | Forge | Mailing list archives | ATOMS | File exchange
Please login or create an account
Change language to: English - Français - Português - 日本語 -
Справка Scilab >> Xcos > palettes > Matrix operation palette > MATINV

MATINV

Matrix Inverse

Block Screenshot

Description

The MATINV block outputs the inverse of a square input matrix calculated by using the LU factorization. A warning message is printed if the input is badly scaled or nearly singular.

The equivalent function of this block in Scilab is inv.

Parameters

  • Datatype(1=real double 2=Complex)

    It indicates the type of the output. It support only the two types double (1) and complex (2). If we input another entry in this label xcos will print the message "Datatype is not supported".

    Properties : Type 'vec' of size 1.

Default properties

  • always active: no

  • direct-feedthrough: yes

  • zero-crossing: no

  • mode: no

  • regular inputs:

    - port 1 : size [-1,-1] / type 1

  • regular outputs:

    - port 1 : size [-1,-1] / type 1

  • number/sizes of activation inputs: 0

  • number/sizes of activation outputs: 0

  • continuous-time state: no

  • discrete-time state: no

  • object discrete-time state: no

  • name of computational function: mat_inv

Matrix Inverse example: inv([0 1/(sin(t)+1) ; 1/(t+1) 0])

Interfacing function

  • SCI/modules/scicos_blocks/macros/MatrixOp/MATINV.sci

Computational function

  • SCI/modules/scicos_blocks/src/c/mat_inv.c
  • SCI/modules/scicos_blocks/src/c/matz_inv.c

See also

  • MATLU — LU Factorization
  • MATPINV — Matrix PseudoInverse
  • inv — matrix inverse
Scilab Enterprises
Copyright (c) 2011-2017 (Scilab Enterprises)
Copyright (c) 1989-2012 (INRIA)
Copyright (c) 1989-2007 (ENPC)
with contributors
Last updated:
Thu Feb 14 15:05:19 CET 2019