MATLU - LU Factorization (original) (raw)
Scilab 5.3.3
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- Xcos
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- CUMSUM
- EXTRACT
- EXTTRI
- MATBKSL
- MATCATH
- MATCATV
- MATDET
- MATDIAG
- MATDIV
- MATEIG
- MATEXPM
- MATINV
- MATLU
- MATMUL
- MATPINV
- MATRESH
- MATSING
- MATSUM
- MATTRAN
- MATZCONJ
- RICC
- ROOTCOEF
- SUBMAT
Please note that the recommended version of Scilab is 2026.0.1. This page might be outdated.
See the recommended documentation of this function
Scilab help >> Xcos > palettes > Matrix operation palette > MATLU
Block Screenshot
Contents
Description
The MATLU Block outputs two matrices L and U, with row pivoting, from the LU factorization of a square input matrix. If A is the input matrix then:
E*A=L*U where E is the permutation matrix, U an upper triangular matrix and L a lower triangular matrix.
The equivalent function of this block in Scilab is [l,u,e]=lu(A).
Dialog box
- 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
- port 2 : 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_lu
Interfacing function
- SCI/modules/scicos_blocks/macros/MatrixOp/MATLU.sci
Computational function
- SCI/modules/scicos_blocks/src/c/mat_lu.c
- SCI/modules/scicos_blocks/src/c/matz_lu.c
Authors
Fady NASSIF - INRIA