Comments on: Searching in Simulink

By: Seth Popinchalk

Seth Popinchalk — Fri, 29 Oct 2010 12:48:05 +0000

@U N Bharathiraja – Thanks for the answer. I am always amazed at what can be done with regular expressions.

By: U N Bharathiraja

U N Bharathiraja — Fri, 22 Oct 2010 07:52:02 +0000

Hi!,

The answer for the question asked by Seth.

Challenge:
How would you find blocks that have MaskHelp without specifying the value it is set to?
Answer:

blksWithHelp = find_system(gcs,'RegExp','on','MaskHelp','.+')

find_system could be used with regular expressions constraints as well. If ‘on’, search treats search expressions as regular expressions. The default is ‘off’.

“.+” expects atleast one character in the MaskHelp.

Regards,
Bharathiraja.

By: Lorenzo

Lorenzo — Wed, 25 Nov 2009 13:51:29 +0000

Hello!
I have to change the DECIMATION of ‘To Workspace’ block in my libraries (and I have a lot of this blocks in my libraries…)
How I can do this from command line (with find_system I think…but I don’t know how…)?

Thank you.

By: Mike Tocci

Mike Tocci — Mon, 23 Nov 2009 12:21:15 +0000

Hi Ben,

What version are you using? I just tried this on the demo model sl_subsys_enab1 in 9a and got,

find_system(‘sl_subsys_enab1′, ‘FollowLinks’,'on’, ‘LookUnderMasks’,'all’, ‘BlockType’,'SubSystem’)
ans =
‘sl_subsys_enab1/ Subsystem
definitions’
‘sl_subsys_enab1/enab1′
‘sl_subsys_enab1/enab2′

The one thing I can think of is that “gcs” is not pointing to the model you think it is. If you enter the full model name, does it still not work?

Mike

By: Ben Brown

Ben Brown — Mon, 23 Nov 2009 05:48:23 +0000

The following does not appear to find enabled subsystems!

find_system(gcs, ‘FollowLinks’,'on’, ‘LookUnderMasks’,'all’, ‘BlockType’,'SubSystem’)

I realize these subsystems have dual identities but I would have expected this to work. Is there a magic argument to find_system to get the expected behavior?

By: Peter Raeth

Peter Raeth — Mon, 22 Dec 2008 18:37:55 +0000

Greetings Seth.

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.

By: Raja

Raja — Fri, 05 Dec 2008 12:24:52 +0000

Dear Seth

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.

By: ali

ali — Thu, 16 Oct 2008 11:02:01 +0000

dear seth,
i would like to design PID controller in matlab/simulink for control the process trainer.
please help.
i think my designed was wrong….

By: Kieran Parsons

Kieran Parsons — Mon, 26 May 2008 13:13:24 +0000

@Seth (13) – Thanks for the info. I would like to programmatically add viewers to a model, but there is no API to do this. Instead I think I can copy a viewer from one model into another and change the port it is connected to. For this the ability to find viewers in a model is useful.

By: Malte

Malte — Sun, 25 May 2008 20:58:03 +0000

Hi,

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)?