open_system (Simulink Reference)

Open a Simulink system window or a block dialog box

Syntax

open_system('sys')
open_system('blk')
open_system('blk', 'force')
open_system('blk', 'parameter')
open_system('blk', 'mask')
open_system('blk', 'OpenFcn')
open_system('sys', 'replace')
open_system('sys', 'reuse')

Description

open_system('sys') opens the specified system or subsystem window, where 'sys' is the name of a model on the MATLAB path, the fully qualified pathname of a model, or the relative pathname of a subsystem of an already open system (for example, engine/Combustion). On UNIX, the fully qualified pathname of a model can start with a tilde (~), signifying your home directory.

open_system('blk'), where 'blk' is a full block pathname, opens the dialog box associated with the specified block. If the block's OpenFcn callback parameter is defined, the routine is evaluated.

open_system('blk', 'force'), where 'blk' is a full pathname or a masked system, looks under the mask of the specified system. This command is equivalent to using the Look Under Mask menu item.

open_system('blk', 'parameter') opens this block's parameter dialog box.

open_system('sys', 'mask') opens this block's mask.

open_system('blk', 'OpenFcn') runs this block's open function.

open_system('sys', 'replace') the window of the parent system with the window of the subsystem opened by this command.

open_system('sys', 'reuse') uses the parent system's window to display the subsystem opened by this command.

Example

This command opens the controller system in its default screen location.

```
open_system('controller')
```

This command opens the block dialog box for the Gain block in the controller system.

```
open_system('controller/Gain')
```

Suppose that mymodel contains a masked subsystem, A, and a block, B, whose OpenFcn contains the following lines:

open_system('mymodel/B', 'parameter');
open_system('mymodel/A', 'mask');

Then opening block B causes both the parameter dialog box for B and the mask dialog box for A to appear.

See Also

close_system, load_system, new_system, save_system

new_system replace_block