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Scilab Help >> Xcos > palettes > Matrix operation palette > SUBMAT


Sub-matrix Extraction

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This block outputs a sub matrix of the input matrix. The dimensions of the input matrix are specified in the Input Dimension parameter. The user gives the range of extraction with four parameters:

  • The parameters Starting Row Index and Ending Row Index specify the lines range to be extracted.

  • The parameters Starting Column Index and Ending Column Index specify the column range to be extracted.


  • 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.

  • Starting Row Index

    The first row of the sub-matrix.

    Properties : Type 'vec' of size 1.

  • Ending Row Index

    The last row of the sub-matrix.

    Properties : Type 'vec' of size 1.

  • Starting Column Index

    The first column of the sub-matrix.

    Properties : Type 'vec' of size 1.

  • Ending Column Index

    The last column of the sub-matrix.

    Properties : Type 'vec' of size 1.

  • Input Dimension

    The Matrix input dimensions.

    Properties : Type 'vec' of size 2.

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,-2] / 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: submat

Interfacing function

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

Computational function

  • SCI/modules/scicos_blocks/src/c/submat.c
  • SCI/modules/scicos_blocks/src/c/submatz.c
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Last updated:
Mon Jan 03 14:23:37 CET 2022