Identify a connecting line

Hi,

I have a model with several blocks and lines connecting them. I am able to get all my line names using the following:

LineNames= get_param(find_system(gcs,'FindAll','on','type','line'),'Name')

If I tell Matlab the names of two blocks, ie. InputPort and Filter1, does anyone know how I can identify which line in LineNames is conencting these two blocks? Would I have to use 'PortConnectivity'?

Answer 1

[Babak]

here are some useful command you can (may want to) use :

 BlocksYoureLookingFor = find_system(gcs,'BlockDialogParams','MyDlgParams')
 % or use it with another switch to find your filter block, like
 %  BlocksYoureLookingFor = find_system(gcs,'BlockType',....)

 % now get the line handles of that block,
 YourBlocksLineHandles = get_param(BlocksYoureLookingFor(1),'LineHandles')
 % note that there may be more than 1 block found.

% here's how you can find the name of the inport line of the block:
Line_name = get(YourBlocksLineHandles.Inport,'Name')

% here's how you can change the name of the inport 
set(YourBlocksLineHandles.Inport,'Name','YourFavouriteName')

[mtr]

Hi Babak,

Thanks for the suggestions. When I use the Line_name command, I get an error saying "Attempt to reference field of non-structure array". My "YourBlocksLineHandles" returns a [1x1 struct]

BlocksYoureLookingFor = find_system(gcs,'Name','Filter')
YourBlocksLineHandles = get_param(BlocksYoureLookingFor,'LineHandles')
Line_name = get(YourBlocksLineHandles.Inport,'Name')

[Babak]

I don't get which line you get the error. There are 3 lines on what your last comment says: find_system, get_param, get. Please clarify which line you are getting the error.

You can always type these in MATLAB's command window and check what the result of the structure/variable is. You can always say

 class(YourBlocksLineHandles)

to check its class. You can also check the fields of this structure if necessary.

[mtr]

I get the error on the last line: Line_name = get(YourBlocksLineHandles.Inport,'Name')

[Babak]

Please run these lines in MATLAB's command window, Try to see what

 YourBlocksLineHandles

is. It should be a structure. You can check it's fields by typing this in command window:

 fieldnames(YourBlocksLineHandles)

Check see if Inport is one of the options or not.