Create a block table using script

Question

1 个投票

I am trying to create a function that can create a block table that contain their Handle, FullName, BlockType, Parent by using struct. However each time I get enter a model name, it said

Error in createBlockTable (line 9)
       tableStruct = struct(get(gcb), 'Handle', get(i), 'FullName');
       

Here is my code

function blockTable = createBlockTable(modelName)
    load_system(modelName);
    getBlock = find_system(modelName, 'FindAll', 'on', 'FollowLinks', 'on', 'LookUnderMasks', 'all', 'Type', 'Block');
    
    blockCell = cell(1,length(getBlock));
    for n = 1:length(getBlock)
       for i = getBlock(n, 1)
          tableStruct = struct(get(i), 'Name');
       end
    end
    
    blockTable = assign(tableStruct, blockCell); 
end

I am thinking that I mess up at line i = getBlock(:,1), but I do not know how to solve this problem. Thanks

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Image Analyst 2020-11-30

在 MATLAB Online 中打开

Is i a vector? What does it show if you simply do this

 i  = getBlock(:,1)
whos i

Maybe if i is a single number you want to do this:

    for n = 1:length(getBlock)
       gb = getBlock(n, 1)
       tableStruct = struct(get(gb), 'Name');
    end    

but I don't have Simulink so that's just a wild guess.

Khoi Le 2020-11-30

i here is to get the block in the model, I am trying to get the name of each block so I can put it on a structure. but really do not understand how to get it right

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Answer 1

Khoi Le 2020-12-1

在 MATLAB Online 中打开

1 个投票

I have solve the problem, thanks to @Fangjun Jiang that gave me some idea

copyModel = 'sldemo_fuelsys_copy';
blockTable = makeTable(copyModel);
save('blockTable.mat','blockTable');
function blockTable = makeTable(modelName)
    load_system(modelName);
    getBlock = find_system(modelName, 'FindAll', 'on', 'FollowLinks', 'on', 'LookUnderMasks', 'all', 'Type', 'Block');
  
    blockCell = cell(1, length(getBlock));
    
    for n = 1:length(getBlock)
    
        structTable = struct('Handle', get(getBlock(n), 'Handle'), 'Name', ... 
        get(getBlock(n), 'Name'), ...
        'Block_Type', get(getBlock(n), 'BlockType'), ...
        'Parent', get(getBlock(n), 'Parent') );
        
        blockCell{1, n} = structTable;
    
    end 
    
    blockTable = blockCell;
end

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Fangjun Jiang 2020-12-1

No need to use for-loop. cell2struct() can do the job as in my example.

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Answer 2

Fangjun Jiang 2020-11-30

在 MATLAB Online 中打开

0 个投票

This inner loop does not make sense.

       for i = getBlock(n, 1)
          tableStruct = struct(get(i), 'Name');
       end

Each block has different properties so don't expect you can use get() to create a universally consistent structure array. get() already returens a structure. It contains different field names for each block.

The proper way is to go through a loop, get the value for "Handle, FullName, BlockType, Parent" and then construct the structure or table.

You could also do get(getBlock,'Handle') or get(getBlock,'Name') to get the property values for all the blocks at once, but to do get(getBlock,'BlockType') or get(getBlock,'Parent'), you need to exclude the model itself.

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Khoi Le 2020-12-1

wow, nice support, but I have other question, is there anyway can but this table to a cell and each cell have a struct which contain Name, Parent and Handle of each block on a cell like 1x244

Fangjun Jiang 2020-12-1

编辑：Fangjun Jiang 2020-12-1

blockStruct=cell2struct([Names,Parents],{'Names','Parents'},2)

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