how to find unconnect goto block and from block in the simulink model use script

hello, i want use the script to find out all the unconnected(or unmatched) goto/from block in the simulink model,which command can i use, i dont know which item of the block i can used to confirm that this block is unconnected. i try check the Goto source, but dont know how to get this item use certain command.

Answer 1

[Michael]

I think you should find a matching of the "GotoTag" in Goto blocks and From blocks.

First find all your Goto and From blocks in the model

gotoBlocks = find_system(System, 'BlockType', 'Goto');  % return the names of all Goto blocks
fromBlocks = find_system(System, 'BlockType', 'From');  % return the names of all From blocks

Now you have to get all GotoTags parameter in gotoBlocks and fromBlocks cell array. (Example only works for one element of the cell array)

gotoTag = get_param(gotoBlocks{1}, 'GotoTag');      % get the GotoTag of the first Goto block
fromTag = get_param(fromBlocks{1}, 'GotoTag');      % get the GotoTag of the first From block

If there is a connection between a Goto block and a From block then each entry in the gotoTag - array have to match with an entry in the fromTag - array. If an entry in the gotoTag - array has no match with fromTag - array then this Goto block has no connection and if an entry in the fromTag - array has no match with gotoTag - array then this From Block has no connection.

[wenchao zhang]

thank you,Michael, yes, i think this can work, i have several hundred goto and from block, i need use for loop to check them.