Simulink.WorkspaceVar

Store information about workspace variables and blocks that use them

Simulink.WorkspaceVar is not recommended. Use Simulink.VariableUsage instead.

Description

A Simulink.WorkspaceVar object describes attributes of a workspace variable and lists the blocks that use the variable.

Creation

The Simulink.findVars function returns one or more Simulink.WorkspaceVar objects that embody the results of searching for variables.

Only the Simulink.WorkspaceVar function can set any field value in a Simulink.WorkspaceVar object. The fields are otherwise read-only.

Syntax

varObj = Simulink.WorkspaceVar(varNames,wkspName)

Description

varObj = Simulink.WorkspaceVar(varNames,wkspName) creates an array of Simulink.WorkspaceVar objects to describe the variables varNames. The constructor sets the Name property of each object to one of the variable names specified by varNames, and sets the Workspace property of all the objects to the workspace specified by wkspName. You can specify varNames with variables that are not used in any loaded models.

Input Arguments

varNames — Names of target variables

character vector | cell array of character vectors

Names of target variables, specified as a character vector or a cell array of character vectors. The constructor creates a Simulink.WorkspaceVar object for each variable name. You can specify varNames with variables that are not used in any loaded models.

Example: 'k'

Example: {'k','asdf','fuelFlow'}

Data Types: char | cell

wkspName — Name of containing workspace

character vector

Name of the workspace that defines the target variables, specified as a character vector. For example, you can specify the MATLAB base workspace. The constructor also determines and sets the WorkspaceType property of each of the returned Simulink.WorkspaceVar objects.

Example: 'base workspace'

Example: 'myModel'

Example: 'myDictionary.sldd'

Data Types: char

Properties

Name — Name of variable

'' (empty character vector) (default) | character vector

This property is read-only.

Name of the variable described by the object, returned as a character vector.

Workspace — Name of workspace that contains variable

'' (empty character vector (default) | character vector

This property is read-only.

Name of the workspace that contains the variable, returned as a character vector. For example:

Workspace value	Meaning
'base workspace'	The MATLAB® base workspace
'MyModel'	The model workspace for the model MyModel.
'MyModel/Mask1'	The mask workspace for the masked block Mask1 in the model MyModel.

WorkspaceType — Type of workspace containing variable

'unknown' (default) | 'base' | 'model' | 'mask'

This property is read-only.

Type of workspace that contains the variable, returned as a character vector. The possible values are:

• 'base' — The base workspace

• 'model' — A model workspace

• 'mask' — A mask workspace

UsedByBlocks — Users of variable

{} (empty cell array) (default) | cell array of character vectors

This property is read-only.

Users of the variable, returned as a cell array of character vectors. Each character vector identifies a block that uses the variable. The Simulink.findVars function populates this property.

Object Functions

intersect

setdiff

Examples

Create Object That Represents Variable in Base Workspace

Return a Simulink.WorkspaceVar object for a variable k in the base workspace.

var = Simulink.WorkspaceVar('k', 'base workspace');

Represent All Variables in the Base Workspace

Return an array of Simulink.WorkspaceVar objects containing one object for each variable returned by the whos command in the base workspace.

vars = Simulink.WorkspaceVar(who,WkspName)

Represent All Variables in a Model Workspace

Return an array of Simulink.WorkspaceVar objects that describes all the variables in a model workspace.

hws = get_param('mymodel', 'ModelWorkspace');
vars=Simulink.WorkspaceVar(hws.whos, 'MyModel')

Represent All Variables in a Mask Workspace

Return an array of Simulink.WorkspaceVar objects that describes all the variables in a mask workspace.

maskVars = get_param('mymodel/maskblock', 'MaskWSVariables');
vars = Simulink.WorkspaceVar(maskVars, 'mymodel/maskblock');