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Programmatic Model Editing

Create models, add and connect blocks in models, set parameters and properties, and perform other modeling basics programmatically

Learn the basics of programmatic model management in Simulink^®.

Functions

Open, Save, and Close

`simulink`	Open Simulink Start Page
`start_simulink`	Start Simulink without opening any windows
`slLibraryBrowser`	Open, load, and close Simulink Library Browser, create and get handle of Library Browser object
`open_system`	Open model, library, subsystem, or block dialog box
`load_system`	Load Simulink model into memory
`save_system`	Save Simulink model
`close_system`	Close Simulink model window or block dialog box
`bdclose`	Close any or all Simulink model windows unconditionally
`learning.simulink.launchOnramp`	Open self-paced, interactive trainings (Since R2019a)

Add and Delete

`add_block`	Add block to model
`add_line`	Add line to Simulink model
`delete_block`	Delete blocks from Simulink system
`delete_line`	Delete line from Simulink model
`add_param`	Add parameter to Simulink model
`delete_param`	Delete model parameter added with `add_param` function
`Simulink.BlockDiagram.deleteContents`	Delete graphical contents of model
`Simulink.SubSystem.deleteContents`	Delete contents of subsystem
`Simulink.history.clear`	Clear the Simulink start page and editor history (Since R2020b)

Create

`new_system`	Create Simulink model or library in memory
`Simulink.createFromTemplate`	Create model or project from template
`Simulink.BlockDiagram.createSubsystem`	Create subsystem containing specified set of blocks
`Simulink.Annotation`	Create and specify properties of text, image, and area annotations

Get and Set

`docblock`	Get or set editor invoked by Simulink DocBlock block
`gcs`	Get path name of current system
`getfullname`	Get path that identifies block or line
`gcb`	Get path name of current block
`gcbh`	Get handle of current block
`gcbp`	Get `Simulink.BlockPath` object for current block (Since R2019a)
`getSimulinkBlockHandle`	Get block handle from block path
`get_param`	Get parameter names and values
`set_param`	Set Simulink parameter value
`Simulink.defaultModelTemplate`	Set or get default model template
`getCurrentAnnotation`	Get current annotation object (Since R2019a)
`getCallbackAnnotation`	Get annotation executing callback
`edittime.getDisplayIssues`	Check whether model design warnings and errors is on (Since R2019a)
`edittime.setDisplayIssues`	Detect model design errors and warnings (Since R2019a)

Find, Replace, and Index

`hilite_system`	Highlight block, signal line, port, or annotation
`find_system`	Find models, blocks, lines, ports, and annotations
`Simulink.FindOptions`	Specify options for finding blocks in models and subsystems
`Simulink.findTemplates`	Find model or project templates with specified properties
`Simulink.allBlockDiagrams`	Find loaded Simulink models and libraries
`Simulink.findBlocks`	Find blocks in Simulink models
`Simulink.findBlocksOfType`	Find specified type of block in Simulink models
`replace_block`	Replace blocks in Simulink model
`modelfinder`	Search and open examples, models, and projects (Since R2022a)
`modelfinder.setDefaultDatabase`	Set default database to index models (Since R2023b)
`modelfinder.registerFolder`	Index models in Model Finder (Since R2022a)
`modelfinder.unregisterFolder`	Remove models from Model Finder (Since R2022a)
`modelfinder.createDatabase`	Create new database to index models (Since R2023b)
`modelfinder.registerDatabase`	Register database with Model Finder (Since R2023b)
`modelfinder.unregisterDatabase`	Remove database from Model Finder (Since R2023b)
`modelfinder.setSearchDatabase`	Set search scope to find models (Since R2023b)

Check

`isSimulinkStarted`	Check whether Simulink is started (Since R2020b)
`bdroot`	Top-level model of current system
`bdIsLoaded`	Determine whether model, subsystem, or library is loaded
`bdIsLibrary`	Determine whether model is library
`bdIsDirty`	Determine whether model, subsystem, or library has unsaved changes
`slIsFileChangedOnDisk`	Determine whether model has changed since it was loaded

Extract and Export

`Simulink.SubSystem.copyContentsToBlockDiagram`	Copy graphical contents from subsystem to another model
`Simulink.exportToTemplate`	Create template from model or project
`Simulink.exportToVersion`	Export model, library, or project for use in previous version of Simulink
`Simulink.MDLInfo`	Extract SLX, SLXP, or MDL file information without loading file
`Simulink.MDLInfo.getDescription`	Extract SLX, SLXP, or MDL file description without loading file
`Simulink.MDLInfo.getMetadata`	Extract SLX, SLXP, or MDL file metadata without loading file

Edit

`Simulink.BlockDiagram.expandSubsystem`	Replace subsystem with subsystem contents
`Simulink.BlockDiagram.arrangeSystem`	Improve layout of block diagram
`Simulink.BlockDiagram.routeLine`	Route existing lines of model (Since R2019a)
`slCharacterEncoding`	Specify encoding to use in code generated from Simulink models
`frameedit`	Open PrintFrame Editor to edit print frames for Simulink and Stateflow block diagrams

Orient and Print

`orient`	Paper orientation for printing or saving
`print`	Print figure or save to specific file format

Parameters

Programmatic Model Editor Appearance Parameters

Topics

Programmatic Modeling Basics
Create models, add and connect blocks in models, set parameters and properties, and perform other modeling basics programmatically.
Run Simulations Programmatically
Run simulations programmatically by writing scripts or by issuing commands in the MATLAB^® Command Window.
Programmatically Print Models from MATLAB Command Window
The MATLAB print command provides several options for printing Simulink models.