hasVariable

Determine whether variable exists in the model workspace of a model

Syntax

varExists = hasVariable(mdlWks,varName)

Description

varExists = hasVariable(mdlWks,varName) returns 1 if a variable whose name is varName exists in the model workspace represented by the Simulink.ModelWorkspace object mdlWks.

Examples

Determine Existence of Variable in Model Workspace

Open the example model vdp.

open_system('vdp')

Create a Simulink.ModelWorkspace object that represents the model workspace of vdp.

mdlWks = get_param('vdp','ModelWorkspace');

Create a variable named myVar in the model workspace.

assignin(mdlWks,'myVar',5.12)

Determine whether a variable named myVar exists in the model workspace.

exists = hasVariable(mdlWks,'myVar')

exists =
   1

Input Arguments

mdlWks — Target model workspace

Simulink.ModelWorkspace object

Target model workspace, specified as a Simulink.ModelWorkspace object.

varName — Name of target variable

character vector

Name of the target variable, specified as a character vector.

Example: 'myVariable'

Data Types: char

Output Arguments

varExists — Indication of existence

1 | 0

Indication of variable existence, returned as 1 (true) or 0.

Version History

Introduced in R2012a