Find name of MPT signal of input line

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Jeremy
Jeremy 2012-8-27
I have a large Simulink model which includes many signals associated with mpt.Signal objects in the base workspace (so that these lines auto code to simple, non-structured variables). To create some ancillary information for this model, I need my script to find which mpt signals are used as inputs to some of my custom subsystem blocks.
Looking at one of these blocks, I can use "get_param" to get its inport "Port" and "Line" object handles, but I cannot find a way to retrieve the name of the associated MPT signal.
Alternatively, my script has a list of these signals available. If I could generate a list of every subsystem inport which uses a given MPT signal, then I could search that list for the subsystems which intrest me, and complete my script from there.
So is there any way for a script to find the uses of an MPT signal, even after it is routed through multiple subsystem levels of a complex madel? I could use a solution which either examines an inport and determinies the signal or finds all inports which use a given signal.

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回答（2 个）

Kaustubha Govind
Kaustubha Govind 2012-8-27
This might help:
>> signals = find_system('modelname', 'FindAll', 'on', 'RegExp', 'on', 'Type', 'line', 'Name', '\w')
This should give you the list of all signals with a non-empty name.
Alternately, if you have the line handle, you should just have to call GET_PARAM to ask for the "Name" parameter:
>> get_param(signals(1), 'Name')
You can also use "get" instead of get_param. The following command will query for all public properties of the line:
>> get(signals(1))
Jeremy
Jeremy 2012-8-27
编辑：Jeremy 2012-8-28
Unfortunately, that only finds lines which are manually named with the signal name. I need to find where the signal goes from there, including through the use of "To-From" blocks and into and out of subsystems. If I select one of these "downstream" lines and enter a less-than sign (<) as the name, or if I set the line's "signalPropagation" property to "on", then the signal name appears in my Simulink screen, surronded by less-than/greater-than signs (<MySignalName>). However, using "get(get_signals(1))" in this condition, I can see that "signalPropagation" is on, but I still cannot see the actual signal name in any property ("Name" is just set to an empty string).
So I can see the signal name in my Simulink screen, and I have traced a few of these blocks in the auto-code to verify that the intended MPT variable is used directly (not written to a structure element then used by reference to the structure). But I still have no way for my script to access this signal name.

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