Can I add parameters to a MATLAB function block programmatically?

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Felix Schönig
Felix Schönig 2020 年 5 月 4 日
コメント済み: darova 2020 年 5 月 4 日
Dear community,
I want to use my base workspace variables as parameters in my Matlab function block in Simulink. If possible, I want to use as little code as possible inside the Matlab function block. My current solution is:
  1. Create a struct in the base workspace and add all variables to it via the dot-operator.
  2. Add the struct (let´s call it 'P') via 'Edit Data' in the 'Ports and Data Manager' as Input and change the scope to 'Parameter'.
  3. Re-assign the parameters inside the function block manually, such as:
a = P.a;
b = P.b;
[...]
After searching the forums for hours, I have not found a better solution that I understand. Is there a way to use the parameters without re-initializing them inside the Matlab function body? I know that I could add them individually as Parameters via 'Edit Data' just as I did with the struct, but there are too many.
PS: I cam all the way from saving a .mat file in the base WS and loading it to a handle in the function body. I wish the function to contain as little extra code as possible, only the "core computations" shall remain, so to say.
  1 件のコメント
darova
darova 2020 年 5 月 4 日
I'm interested in this question too
Meantime, you can extract variable using for loop
function main
s.a = 1;
s.b = 2;
s.c = 3;
[a1 b1 c1] = myassign(s)
function varargout = myassign(s)
if nargout ~= length(fieldnames(s)) % if number of arguments does not match
disp('error')
varargout = cell(nargout,1); % assign empty cells
return
end
fnames = fieldnames(s);
for i = 1:length(fnames)
varargout{i} = getfield(s,fnames{i});
end

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