How to handle visdiff for Simulink models per script?

I want to call the compare tool for Simulink per script, do a diff with a filter applied and store the output to the workspace in order to do some statistics.

comp_bat = visdiff('Mod1', 'Mod2')

The return value of comp is of class SimulinkModelComparison (methods: delete, filter, publish).

comp_bat = 

  SimulinkModelComparison with properties:

     Left: 'Mod1.slx'
    Right: 'Mod2.slx'

I can publish that to html or docx, but there is neither an option for publish to workspace (as it already is?) nor to define a filter.

If I run the comparison in the GUI, there is the possibility to set the filters, and to do the diff, and to publish to workspace.

However, the workspace variable is of class Edits (methods: none) now.

comp_gui = 

  Edits with properties:

          Filters: [1×3 struct]
     LeftFileName: 'Mod1.slx'
         LeftRoot: [1×1 xmlcomp.Node]
    RightFileName: 'Mod2.slx'
        RightRoot: [1×1 xmlcomp.Node]
        TimeSaved: '23-Sep-2020 15:43:34'
          Version: '2.0'

The data which I want to evaluate is stored in LeftRoot and RightRoot.

So basically, I need to define the filter, set it in SimulinkModelComparison class and transform it somehow to Edits class.

Answer 1

[Manas Meena]

In my understanding you want to edit the filters using visdiff , publish the results and export the results to the workspace.

For changing the filters via visdiff you may do the following :

comparison = visdiff(modelname1,modelname2);  
filter(comparison, 'unfiltered'); 

Supported filters are: 'unfiltered' – removes all filtering from the comparison, or 'default' – default filtering strategy for comparisons.

Then you can use the publish function to view the results as an HTML file

To export results to the workspace and to learn more about the xmlcomp.Edits object refer to the following link:

https://www.mathworks.com/help/simulink/ug/exporting-printing-and-saving-comparison-results.html#bsxwbwi-1

For examples about Simulink Model Comparison you can refer to this link:

https://www.mathworks.com/help/simulink/ug/about-simulink-model-comparison.html

[Hannes Siegl]

Thanks, but still I do not have full access to the functionality required for a proper 'diff' for automation.

I would need the possibility of

• specification and application of a filter ( not only unfiltered/default )
• export of data to workspace

which you can do with visdiff manually. My current experience (hopefully I am wrong):

• visdif API: no specification of the filter, no export to workspace
• slxmlcomp.compare API: no specification/application of a filter

I only see the possibility to use slxmlcomp.compare and to do a tedious post processing of the result copied to the workspace (somehow a bit weird because there is already a filter function for the output of visdiff).

[Manas Meena]

This functionality is not currently supported, I have heard that this issue is known and the concerned parties may be investigating further.

[mawa]

@Manas Meena has anything happened regarding unsupported functions?

[Nils]

I am also very interested if any progress has been made on this issue. To make this useful in a CI-context, being able to programmatically set the filters is a must. @MathWorks Support Team