how to check if an specific name is existed inside a simulink

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wenchao zhang
wenchao zhang 2023-10-20
回答： Walter Roberson 2025-3-31
i want to check if an specific name(parameter,signallines,..) is existed inside a simulink model, if use can find_system work in this case? or any more quick command can be used to meet this requirement.

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采纳的回答

atharva
atharva 2023-11-10
Hey Wenchao,
I understand that you are trying to check if a specific name is a parameter or is a variable declared inside a simulink model.
You can use exist function which checks the existence of a variable.
exist name returns the type of name as a number. This list describes the type associated with each value:
  • 0 — name does not exist or cannot be found for other reasons. For example, if name exists in a restricted folder to which MATLAB® does not have access, exist returns 0.
  • 1 — name is a variable in the workspace.
  • 2 — name is a file with extension .m, .mlx, or .mlapp, or name is the name of a file with a non-registered file extension (.mat, .fig, .txt).
  • 3 — name is a MEX-file on your MATLAB search path.
  • 4 — name is a loaded Simulink® model or a Simulink model or library file on your MATLAB search path.
  • 5 — name is a built-in MATLAB function. This does not include classes.
You can find more about the function exist on Mathworks Documentation - https://www.mathworks.com/help/matlab/ref/exist.html
I hope this helps!

更多回答（1 个）

Walter Roberson
Walter Roberson 2025-3-31
To check whether a particular name exists anywhere in a Simulink model, you need to use find_system() repeatedly. Some of the calls will have to specify FindallAll 'on' along wiith various 'Type' parameters. I do not believe that you can combine multiple 'Type' with the same find_system() command
You might also need to
find_system(model,MatchFilter=@Simulink.match.allVariants)
to check all blocks including variants.

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