The thread above leads us in a direction we really need to go.

We have a need to retrieve a list of signal names and their associated dimensions from an existing compound bus. The retrived information should be in the form of something that cam be copy/pasted in text form.

Reading the above thread, we can see that the following commands yield a list of all lines in a model. How can we get the list of lines within a specific compound bus and get the format of each line?

allLines = find_system(’Dimensions’, ‘FollowLinks’, ‘on’, ‘LookUnderMasks’, ‘All’, ‘FindAll’, ‘on’, ‘Type’, ‘line’)

lineNames = get_param(allLines, ‘Name’)

Thank you for whatever insights you can offer.

Best,

Peter.

I have been in Matlab for the past one month .
Can u tell me what is LineChildren is all about.
I don have any idea about this.

I want to detect which block are connected to each other.

(1) Discover all e.g. sum blocks by find_system.

(2) Discover all blocks connected to the found sum blocks.

Any idea of how to do (2)?

Note that if I run find_system(’my_system/Scope’) it does get found (as a check to whether viewers are totally invisible).

Thanks.

Appreciate the enthusiasm about the doc, definetely second the advice. Just a clarification though, the HELP command does not bring up a text version of the documentation. In general the HELP command dumps the comments at the top of of an M-file into the command window. For MATLAB functions (i.e not user-written), the documentation often contains a lot more information, examples and references (and is written by professional documentation writers).To summarize, use the DOC command to bring up the documentation (preferred) or the HELP command to bring up the comments at the top of a file.

To Wei, I offer my humble advice:

2. Great Question! The answer lies within your reach. This is actually a great point for everyone who is new to MATLAB/Simulink, or new with using the documentation.
Whenever you have a question with a Simulink Block, you can hit the “Help” button to bring up the documentation page. But what if you want the help doc for a MATLAB function, not a block? At the MATLAB command prompt, type:

doc find_system

If you have the doc loaded on your computer, this will do the same as the “Help” button. (If you don’t have the doc loaded, you can type:

help find_system

to get a text based version)
The doc is a great place to answer general questions about functions and blocks. Try it! You’ll find the answer to your question, I promise!

3. If you’re trying to search into referenced models, first use FIND_MDLREFS to get the names of ALL the models (this includes all the referenced models and the root model). After that, you can use the answer as an input to FIND_SYSTEM. Try this at the MATLAB command prompt:

sldemo_mdlref_basic

This will open a model reference demo. Then try:

[r, b] = find_mdlrefs(’sldemo_mdlref_basic’)

And lastly:

find_system(r)

See what you get?

I hope this helped!

2. Could you explain why find_system(’findall’,'on’,'type’,'Block_Diagram’) returns handle, and find_system(’findall’,'off’,'type’,'Block_Diagram’) returns string or cell string?

3. How to best use find_system with find_mdlrefs to search entire model?

4. When will there be APIs for the find facility as in post#5 for combined Simulink and Stateflow?