Accessing Signal in MATLAB SLDD from bus editor

I have a sldd which contains various simulink busses inside it, I wanted to access the signals which were present inside the busses so as to write a excel file from it.

Is there any way to do this?

Answer 1

[Vignesh]

Hello Harsh Mittal,

I see that you are looking for a way to access the signals that are present inside a bus which are there in the Simulink Data Dictionary.

I found a similar question in the community where the usage of ‘arrayfun’ and ‘cellfun’ functions were suggested to edit the bus elements pragmatically and I suggest you refer the same. Please use the following question to view the question.

https://www.mathworks.com/matlabcentral/answers/317915-how-to-programmatically-access-and-edit-bus-elements

Kindly refer to the following example code with key parts key parts to accessing the element names, please modify this code to meet your requirements.

sldd_object = Simulink.data.dictionary.open('filename.sldd');
section = getSection(sldd_object, 'Design Data');
entries = find(section, '-value', '-class', 'Simulink.Bus');
% produce cell array of Simulink.Bus objects:
buses = arrayfun(@(x) getValue(x), entries, 'UniformOutput', false); 
% produce a cell array of cell arrays of Simulink.BusElement objects:
elements = cellfun(@(x) x.Elements, buses,  'UniformOutput', false); 
% produce a cell array of cell arrays of element names:
element_names = getElementNames(elements); 
function names = getElementNames(arrayOfElements)
%%getElementNames returns a cell array of element names
    function names = busElementNames(busElement)
      if (length(busElement)<1)
        errordlg('There is a bus with zero elements. Oops.')
      elseif (length(busElement)==1)
        names{1}{1} = busElement.Name;
      else
        names = arrayfun(@(x) x.Name, busElement, 'UniformOutput', false);
      end
  end
  names = cellfun(@busElementNames, arrayOfElements, 'UniformOutput', false);
end

I hope this helps you in accessing the bus elements from SLDD.