find_mdlrefs

Find referenced models and Model blocks in model hierarchy

Syntax

[models,blocks] = find_mdlrefs(system)

[models,blocks] = find_mdlrefs(system,Name,Value)

Description

[models,blocks] = find_mdlrefs(system) finds all referenced models and Model blocks in the model hierarchy below the specified system. The find_mdlrefs function temporarily loads the models.

[models,blocks] = find_mdlrefs(system,Name,Value) provides additional search options using one or more name-value pairs. For example, to keep the models loaded instead of temporarily loading them, set KeepModelsLoaded to true.

Examples

Find Referenced Models in Model Hierarchy

Find referenced models and Model blocks for all models referenced by the specified model.

load_system('sldemo_mdlref_basic');
[myModels,myModelBlks] = find_mdlrefs('sldemo_mdlref_basic')

myModels = 2x1 cell
    {'sldemo_mdlref_counter'}
    {'sldemo_mdlref_basic'  }

myModelBlks = 3x1 cell
    {'sldemo_mdlref_basic/CounterA'}
    {'sldemo_mdlref_basic/CounterB'}
    {'sldemo_mdlref_basic/CounterC'}

Find and Load All Models in Model Hierarchy

By default, the find_mdlrefs function loads and then closes the models that were not already loaded. To identify what models are loaded, use the find_system function.

find_mdlrefs('sldemo_mdlref_depgraph');
find_system('type','block_diagram')

ans =

  0x1 empty cell array

To find and load all models in the model hierarchy, set KeepModelsLoaded to true.

find_mdlrefs('sldemo_mdlref_depgraph','KeepModelsLoaded',true);
find_system('type','block_diagram')

ans = 7x1 cell
    {'sldemo_mdlref_thermostat'  }
    {'sldemo_mdlref_heater'      }
    {'sldemo_mdlref_F2C'         }
    {'sldemo_mdlref_outdoor_temp'}
    {'sldemo_mdlref_house'       }
    {'sldemo_mdlref_heat2cost'   }
    {'sldemo_mdlref_depgraph'    }

The top model and all referenced models remain loaded. If you open sldemo_mdlref_depgraph, you can navigate the model hierarchy without waiting for the referenced models to load as you open them.

Input Arguments

system — System name, block path, or handle

character vector | string scalar | numeric scalar

System name, block path, or handle, specified as a character vector, string scalar, or numeric scalar.

The system must be an SLX file, MDL file, Model block, or Subsystem block.

If you specify a file name, do not include the file extension.

Data Types: double | char | string

Name-Value Pair Arguments

Specify optional comma-separated pairs of Name,Value arguments. Name is the argument name and Value is the corresponding value. Name must appear inside quotes. You can specify several name and value pair arguments in any order as Name1,Value1,...,NameN,ValueN.

Example: refModels = find_mdlrefs(topmodel,'KeepModelsLoaded',true,'ReturnTopModelAsLastElement',false)

'AllLevels' — Levels to search

true or 1 (default) | false or 0

Levels to search, specified as the comma-separated pair consisting of 'AllLevels' and a numeric or logical 1 (true) or 0 (false).

• true — Search all Model blocks in the model hierarchy of the specified system.

• false — Search only the top-level system.

Data Types: logical

'KeepModelsLoaded' — Option to keep models loaded

false or 0 (default) | true or 1

Option to keep models loaded, specified as the comma-separated pair consisting of 'KeepModelsLoaded' and a numeric or logical 1 (true) or 0 (false).

By default the function loads and then closes the models that were not already loaded. To keep the models loaded, set this argument to true. Keeping the models loaded can be useful if you plan on interacting with the models after finding them.

Data Types: logical

'IncludeProtectedModels' — Option to include protected models

false or 0 (default) | true or 1

Option to include protected models in the search results, specified as the comma-separated pair consisting of 'IncludeProtectedModels' and a numeric or logical 1 (true) or 0 (false).

This setting only affects the returned list of referenced models; It does not affect the returned list of Model blocks.

Data Types: logical

'Variants' — Option to include variant models

'ActivePlusCodeVariants' (default) | 'ActiveVariants' | 'AllVariants'

Option to include variant models in the search results, specified as the comma-separated pair consisting of 'Variants' and 'ActivePlusCodeVariants', 'ActiveVariants', or 'AllVariants'.

• 'ActivePlusCodeVariants' — Include all variant models in Variant Subsystem blocks for which you set the Variant activation time parameter to code compile.

• 'ActiveVariants' — Include active variant models for Variant Subsystem blocks.

• 'AllVariants' — Include all variant models in Variant Subsystem blocks.

Note

This search constraint applies only to variant subsystems. To work on all other variant blocks, use Variants MatchFilter option.

Data Types: char | string

'CaseSensitive' — Option to match case when searching

true (default) | false

Option to match case when searching, specified as true for case-sensitive search or false for case-insensitive search.

Data Types: logical

'FollowLinks' — Option for search to follow library links

false (default) | true

Option for the search to follow library links, specified as true or false. If true, search follows links into library blocks.

Data Types: logical

'IncludeCommented' — Option for search to include commented blocks

true (default) | false

Option for the search to include commented blocks, specified as true or false.

Data Types: logical

'LookUnderMasks' — Options to search masked blocks

'all' (default) | 'none' | 'functional' | 'graphical'

Options to search masked blocks, specified as:

• 'all' — Search in all masked blocks.

• 'none' — Prevent searching in masked systems.

• 'functional' — Include masked subsystems that do not have dialogs.

• 'graphical' — Include masked subsystems that do not have workspaces or dialogs.

Data Types: char | string

'Variants' — Options to search variant subsystems

'AllVariants' (default) | 'ActiveVariants' | 'ActivePlusCodeVariants'

Options to search variant subsystems, specified as:

• 'AllVariants' — Search all variant choices.

• 'ActiveVariants' — Search only active variant choices.

• 'ActivePlusCodeVariants' — Search all variant choices with 'Generate preprocessor conditionals' active. Otherwise, search only the active variant choices.

Note

This search constraint applies only to variant subsystems. To work on all other variant blocks, use Variants MatchFilter option.

Data Types: char | string

'MatchFilter' — Function handle to match elements

A Function handle to match elements in a search, such as blocks, system, lines, ports, and annotations. Use MatchFilter to determine whether the elements should be selected or skipped in a search.

Example: Use MatchFilter to find all model blocks in a model by defining the filter function, initFcnMdlBlocks:

 blks = find_mdlrefs('ModelName', 'MatchFilter', @initFcnMdlBlocks)

function match = initFcnMdlBlocks(handle)
    match = ~isempty(get_param(hdl, 'InitFcn'));
end

Example: Use MatchFilter with second output argument prune.

 [match, prune] = fcn(element)
 where
  element - Handle of the block being processed.
  match   - Logical. If false, skip the element.
  prune   - Optional logical (default false). If true, do not look in subsystems.

Variants: Simulink provides Simulink.match.activeVariants and Simulink.match.codeCompileVariants match filter functions, which you can use to find active variants or code compile variant blocks. To do so, compile the model and apply the appropriate MatchFilter options:

• Simulink.match.activeVariants - Matches blocks that are active in simulation after model compilation

• Simulink.match.codeCompileVariants - Matches blocks that are part of generated code after model compilation

Example: Use Simulink.match.activeVariants option to find active variants in a model:

set_param(model, 'SimulationCommand', 'update');
codecompileBlks = find_mdlrefs(model, 'MatchFilter', @Simulink.match.activeVariants);

Example: Use Simulink.match.codeCompileVariants option to find variant choices that are part of the generated C code:

 MODEL([],[],[],'compileForRTW')
 find_mdlrefs(MODEL, 'MatchFilter', @Simulink.match.codeCompileVariants);
 MODEL([],[],[],'term')

'IncludeCommented' — Option to include commented blocks

false or 0 (default) | true or 1

Option to include commented blocks in the search results, specified as the comma-separated pair consisting of 'IncludeCommented' and a numeric or logical 1 (true) or 0 (false).

Data Types: logical

'ReturnTopModelAsLastElement' — Option to include specified system

true or 1 (default) | false or 0

Option to include the specified system in the search results, , specified as the comma-separated pair consisting of 'ReturnTopModelAsLastElement' and a numeric or logical 1 (true) or 0 (false).

By default, the last element in the returned list of referenced models is the name of the model, library, or subsystem file that you specified with the system argument. If you specify a block, the last element is the name of the file that contains it.

Data Types: logical

Output Arguments

models — Names of models

cell array of character vectors

Names of models, returned as a cell array of character vectors.

By default, the last element is the name of the model, library, or subsystem file that you specified with the system argument. If you specify a block, the last element is the model, library, or subsystem file that contains it.

blocks — Names of Model blocks

cell array of character vectors

Names of Model blocks, returned as a cell array of character vectors.

Compatibility Considerations

Specifying a logical value as the second argument of find_mdlrefs is discouraged

Not recommended starting in R2020b

The find_mdlrefs function provides two ways to specify whether to search all levels of the model hierarchy. Both techniques give the same results, but only the name-value pair technique allows you to specify additional options.

Instead of specifying whether to search all levels of the model hierarchy with a logical as the second argument, use the AllLevels name-value pair.