MATCATH

Scicos Block
fr - eng

##
MATCATH: Horizontal Concatenation

### Contents

- MATCATH: Horizontal Concatenation
  - Palette
  - Description
  - Dialog box
  - Example
  - Default properties
  - Interfacing function
  - Computational function
  - See also
  - Authors

### Palette

- Matrix - Matrix operation palette

### Description

The MATCATH Block outputs the horizontal concatenation of multiple matrices. It is also called concatenation according to the columns. The inputs U1,U2,...,Un must have the same number of rows. The output is a M-by-(N1+N2+...+Nn) matrix, where N1,N2,...,Nn are the numbers of columns of the inputs matrices, and M is the number of rows.
The equivalent of MATCATH in Scilab is y=[U1 U2 ... Un].

### 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 Scicos will print the message "Datatype is not supported".
  Properties : Type 'vec' of size 1.

- number of columns of each matrix
  It indicates the number of columns of the inputs matrices.
  Properties : Type 'mat' of size [-1,1].

### Example

    A=[1 2 3;4 5 6]
    B=[7 8;9 10]
    The result of the horizental concatenation is:
    C=[1 2 3 7 8;4 5 6 9 10]

### Default properties

- always active: no
- direct-feedthrough: yes
- zero-crossing: no
- mode: no
- regular inputs:
  - port 1 : size [-1,-2] / type 1
  - port 2 : size [-1,-3] / 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_cath

### Interfacing function

- SCI/macros/scicos_blocks/MatrixOp/MATCATH.sci [view code]

### Computational function

- SCI/routines/scicos/mat_cath.c [view code]
- SCI/routines/scicos/matz_cath.c [view code]

### See also

- MATCATV - MATCATV Vertical Concatenation (Scicos Block)

### Authors

Fady NASSIF INRIA