scifunc_block_m
Scilab function block
Block Screenshot
Contents
Description
This block can realize any type of Scicos block. The function of the block is defined interactively using dialogue boxes and in Scilab language. During simulation, these instructions are interpreted by Scilab; the simulation of diagrams that include these types of blocks is slower. For more information see Scicos reference manual.
Parameters
input ports sizes
a matrix. Number of regular input ports
Properties : Type 'mat' of size [-1 2]
Example : [1,1] for one input of size 1x1; [1,1;2,3] for two inputs of size 1x1 and 2x3
output port sizes
a matrix. Number of regular output ports
Properties : Type 'mat' of size [-2 2]
Example : [1,1] for one output of size 1x1; [1,1;2,3] for two outputs of size 1x1 and 2x3
input event ports sizes
a column vector. Number of input event ports
Properties : Type 'vec' of size -1
Example : [1] for one input event port; [1;1] for two input event ports
output events ports sizes
a column vector. Number of output event ports
Properties : Type 'vec' of size -1
Example : [1] for one output event port; [1;1] for two output event ports
initial continuous state
a column vector.
Properties : Type 'vec' of size -1
Example : [0;0] for two initial continuous states
initial discrete state
a column vector.
Properties : Type 'vec' of size -1
Example : [0;0] for two initial discrete states
System parameters vector
a column vector.
Properties : Type 'vec' of size -1
Example : [0.5;1.5;2.5] for three parameters
initial firing vector
a column vector. Size of this vector corresponds to the number of event outputs. The value of the i-th entry specifies the time of the preprogrammed event firing on the i-th output event port. If less than zero, no event is preprogrammed.
Properties : Type 'vec' of size sum(Number of output event ports)
Example : [1;2] 1 and 2 are the preprogrammed events firing that correspond to the first output event port and to the second output event port respectively
is block always active
Properties : Type 'vec' of size 1
Example : 1 the block is always active; 0 the block is not always active
Other dialogues are opened consecutively where the user may write Scilab code associated with the computations needed (block initialization, outputs, continuous and discrete state, output events date, block ending).
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
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: scifunc
Example
Interfacing function
SCI/modules/scicos_blocks/macros/Misc/scifunc_block_m.sci
Computational function
SCI/modules/scicos/src/fortran/scifunc.f (Type 3)
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