Symbol
Description
Symbol
objects represent the data in Requirements
Table blocks. Use Symbol
objects to configure the input, output,
parameter, local, and constant data in a Requirements Table
block.
Creation
There are several ways to create a Symbol
object:
Create new data in a Requirements Table block by using the
addSymbol
object function.Create new data interactively in the Requirements Table block, then get the associated
Symbol
object by using thefindSymbol
object function.
Properties
Complexity
— Whether data accepts complex values
"Off"
(default) | "On"
| "Inherited"
Whether the data accepts complex values, specified as one of these values:
Complexity | Description |
---|---|
"Inherited" | The data inherits complexity based on the Scope
property. Input and output data inherit complexity from the Simulink® signals connected to the associated input and output ports.
Local and parameter data inherit complexity from the parameter to which the
data is bound. |
"Off" | The data is a real number. |
"On" | The data is a complex number. |
Data Types: enumerated
isDesignOutput
— Whether data is design model output
false
or 0
(default) | true
or 1
Whether the data is a design model output, specified as a numeric or logical
1
(true
) or 0
(false
). This property applies only when the
Scope
property is Input
. For more
information, see Treat as design model output for analysis.
Data Types: logical
Name
— Name of data
"data"
(default) | string scalar | character vector
Name of the data, specified as a string scalar or character vector.
Data Types: char
| string
Scope
— Scope of data
"Input"
(default) | "Output"
| "Local"
| "Constant"
| "Parameter"
Scope of the data that specifies where the data resides in memory relative to the block, specified as one of these values:
Scope | Description |
---|---|
"Input" | The data is an input signal to a Requirements Table block. |
"Output" | The data is an output signal of a Requirements Table block. |
"Local" | The data is defined in the current block only. |
"Constant" | The data is a read-only constant value that is visible to the block. |
"Parameter" | The data resides in a variable of the same name in the MATLAB® workspace, the model workspace, or in the workspace of a masked subsystem that contains this block. |
Data Types: enumerated
Size
— Size of data
"-1"
(default) | string scalar | character vector
Size of the data, specified as a string scalar or character vector. This property
must resolve to a scalar value or a MATLAB vector of values. The default value is "–1"
, which
means that the size is inherited. For more information, see Inherit Size from Simulink (Simulink).
Data Types: char
| string
Type
— Data type
"Inherit: Same as Simulink"
(default) | "double"
| "single"
| "int8"
| ...
Data type, specified as:
"Inherit: Same as Simulink"
"double"
"single"
"half"
"int64"
"int32"
"int16"
"int8"
"uint64"
"uint32"
"uint16"
"uint8"
"boolean"
"string"
"fixdt(1,16,0)"
"fixdt(1,16,2^0,0)"
"Enum: <class name>"
"Bus: <object name>"
To modify the data type properties, use the Symbols pane and Property Inspector. For more information, see Set Data Types in Requirements Table Blocks.
Data Types: enumerated
Examples
Add Data to a Requirements Table Block
Create a new model called myModel
that contains a
Requirements Table block.
table = slreq.modeling.create("myModel");
Add data named u1
to the block.
data = addSymbol(table,Name="u1");
Retrieve Data and Change It
From a model named myModel
that contains a Requirements
Table block, retrieve the RequirementsTable
object.
table = slreq.modeling.find("myModel");
Retrieve the Symbol
objects from the block.
data = findSymbols(table);
Change the properties of the first Symbol
object in the
array.
data(1).Name = "u1"; data(1).Scope = "Output";
Version History
Introduced in R2022a
See Also
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