Optional Arguments in Function as Struct Input

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Ingo Hermann
Ingo Hermann 2025-1-14
评论： Ingo Hermann 2025-1-16
I have a Matlab function with many optional arguments which I want to call with these arguments recursively... This is just a short example, my real code is much more complexe and I don't want to share it here... I know that this function seems kind of nonesense.
function [out] = calculateHatches(vec, args)
arguments
vec
args.Limit = 0
args.Color = 'red'
args.Time = '12:00'
% (and many more argumnts)
end
% some calculations that give me out
out = []
if args.Limit==0
for i=1:10
nargs = args;
nargs.Limit = 1;
% n arguments might change here ...
% calculateHatches(vec,'Limit',nargs.Limit,'Color',nargs.Color,'Time',nargs.Time)
nout = calculateHatches(vec,nargs)
out = [out, nout]
end
end
end
However, this won't work, is there a way to makt it work?
calculateHatches(vec,nargs)
But I have too many optional arguments that change over time of programming too much, that I don't want to write it into the code. This would mean a lot of administration work.
calculateHatches(vec,'Limit',nargs.Limit,'Color',nargs.Color,'Time',nargs.Time)

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采纳的回答

Steven Lord
Steven Lord 2025-1-14
Use the namedargs2cell function.
  3 个评论
显示 1更早的评论
Stephen23
Stephen23 2025-1-15
"However, I can use eval to make it work somehow but this is not really nice ^^..."
EVAL is the opposite of nice. The MATLAB approach is to use a comma-separated list:
https://www.mathworks.com/matlabcentral/discussions/tips/847976-tutorial-comma-separated-lists-and-how-to-use-them
tmp = namedargs2cell(nargs);
out = calculateHatches(vec,tmp{:});

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