Comparing Simulink.ConfigSet objects
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In Simulink versions prior to R2013a, the Simulink.ConfigSet class had an (undocumented but very useful) isContentEqual() method that compared one set of configuration parameters to another, ignoring the 'Name' and 'Description' properties. This appears to have been removed in R2013a. Equality testing using isequal() works, but includes the above properties in the comparison. So two ConfigSets attached to the same model will always return false for isequal(), since they must have different names.
Is there another way to compare Simulink.ConfigSet objects? I see a computeChecksum() method and a compareComponentWithChild() method, both of which are undocumented. Is there an official way to do it, or am I on my own here?
(Another approach is to convert the ConfigSet to a struct, then test its fields, while ignoring 'Name' and 'Description'. Unfortunately, the ConfigSet contains a set of Simulink.ConfigComponent objects, which have to be converted to structs individually (and some of them contain other Simulink.xyz... objects). So this approach, although it should work, is very kludgy.)
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Jakob Janecek
2013-3-27
编辑:Jakob Janecek
2013-3-27
You can compare the config sets by saving them to MAT files and then compare those files. For example:
% Get the first config set from the model
configSet = getConfigSet(<model_name>, <config_set_1_name>);
% Save the config set to a MAT file
save('configSet1.mat', 'configSet');
% Get the second config set from the model
configSet = getConfigSet(<model_name>, <config_set_2_name>);
% Save the second config set to a different MAT file
save('configSet2.mat', 'configSet');
% Compare the files
visdiff('configSet1.mat', configSet2.mat');
This will generate a report that displays the differences between the two files. You can inspect the results to determine whether there are any functional differences.
See http://www.mathworks.com/help/matlab/matlab_env/comparing-files-and-folders.html#brqxeeu-108 for details on how to explore the resulting report.
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Paul Rancuret
2019-8-8
编辑:Paul Rancuret
2019-8-8
Jonas,
It isn't giving you a direct comparison of the actual settings because the configuration sets are saved with different variable names in the two files. The Config_blink.mat contains a set named 'Configuration,' and the Config_PID.mat contains a set named 'QuickStart_50019_7_1_14_33_36991'. So, the comparison tool is just showing the difference as removing one set and adding a new one from the mat file. If they have the same name, then the difference will be detected as a modification to the variable, and a compare button will allow you to look at the detailed differences for that variable. Just re-save the mat files with the same variable name inside, and the visdiff tool will give you results similar to this:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/233268/image.png)
The comparison window (after clicking compare) then gives what I believe you are looking for.
Regards,
Paul
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