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Please note that the recommended version of Scilab is 6.0.2. This page might be outdated.
See the recommended documentation of this function

Scilab manual >> xcos > palettes > Matrix operation palette > EXTRACT

EXTRACT

Matrix Extractor

Block Screenshot

Description

The EXTRACT block extracts some elements from the matrix. The size of the output depends on the number of rows and number of columns to extract.

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.

  • Lines to extract

    It indicates the numbers of the lines to extract.

    Properties : Type 'mat' of size [1,-1].

  • Columns to extract

    It indicates the numbers of the columns to extract.

    Properties : Type 'mat' of size [1,-1].

Example

A=[1 2 3;4 5 6;7 8 9]
If the "Lines to extract" is 1 and 2 and the "Column to extract" is 1 and 3 then the output is
B=[1 3;4 6]

Default properties

  • always active: no

  • direct-feedthrough: yes

  • zero-crossing: no

  • mode: no

  • regular inputs:

    - port 1 : size [-1,-2] / 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: extract

Interfacing function

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

Computational function

  • SCI/modules/scicos_blocks/src/c/extract.c

  • SCI/modules/scicos_blocks/src/c/extractz.c

Authors

Fady NASSIF - INRIA

Scilab Enterprises
Copyright (c) 2011-2017 (Scilab Enterprises)
Copyright (c) 1989-2012 (INRIA)
Copyright (c) 1989-2007 (ENPC)
with contributors
Last updated:
Wed Jan 26 16:25:14 CET 2011