createFitParser.m
fefecaeb9b20FreqRINCal

createFitParser.m
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			function p=createFitParser(n_arg)
			%Creates an input parser for a fit function with n_arg arguments. Default
			%values are ones for initial parameters and plus and minus inf for upper
			%and lower limits respectively. Ensures that the length is equal to the
			%number of arguments.

			p=inputParser;
			validateStart=@(x) assert(isnumeric(x) && isvector(x) && length(x)==n_arg,...
			'Starting points must be given as a vector of size %d',n_arg);
			validateLower=@(x) assert(isnumeric(x) && isvector(x) && length(x)==n_arg,...
			'Lower limits must be given as a vector of size %d',n_arg);
			validateUpper=@(x) assert(isnumeric(x) && isvector(x) && length(x)==n_arg,...
			'Upper limits must be given as a vector of size %d',n_arg);

			addOptional(p,'init_params',ones(1,n_arg),validateStart)
			addOptional(p,'lower',-Inf*ones(1,n_arg),validateLower)
			addOptional(p,'upper',Inf*ones(1,n_arg),validateUpper)

			end