MATDIV

Block Screenshot

Contents

• Matrix division

• • Palette

  • Description

  • Dialog box

  • Example

  • Default properties

  • Interfacing function

  • Computational function

  • See also

Palette

• Matrix operation palette

Description

The MATDIV block outputs the right matrix division. It is a solution to x*B=A. The higher input is the A matrix, the lower one is the B matrix, and the output is x.

If A is an M1xN matrix, B must be a M2xN where M1 and M2 can be different or equal. The output x is a M1xM2 matrix.

The equivalent of MATDIV is slash (/) in Scilab.

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.

Example

A = [1 7 3 ; 23 32 29]
B = [21 18 34 ; 13 10 19 ; 11 54 36]
then the result of the x*B = A equation is (A/B):
x = [-0.475 0.712 0.156 ; -4.350 8.381 0.491]

Default properties

• always active: no

• direct-feedthrough: yes

• zero-crossing: no

• mode: no

• regular inputs:

  - port 1 : size [-1,-3] / type 1

  - port 2 : size [-2,-3] / 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: mat_div

Interfacing function

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

Computational function

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

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

Division example: [t sin(t)]/[0 1; 1 0] = [sin(t) t]

See also

• MATBKSL - Left matrix division

• MATMUL - Matrix Multiplication