mmv2struct.m

Prony分析是获取系统振荡模式特征的一种非常有效的方法

function varargout=mmv2struct(varargin)
%MMV2STRUCT Pack/Unpack Variables to/from a Scalar Structure. (MM)
% MMV2STRUCT(X,Y,Z,...) returns a structure having fields X,Y,Z,...
% containing the corresponding data stored in X,Y,Z,...
% Inputs that are not variables are stored in fields named ansN
% where N is an integer identifying the Nth unnamed input.
if nargin==0
    error('Input Arguments Required.')
elseif nargin==1 % Unpack
    arg=varargin{1};
    if ~isstruct(arg)|length(arg)~=1
        error('Single Input Must be a Scalar Structure.')
    end
    names=fieldnames(arg);
    if nargout==0 % assign in caller
        for i=1:length(names)
            assignin('caller',names{i},getfield(arg,names{i}))
        end
    else % dump into variables
        for i=1:nargout
            varargout{i}=getfield(arg,names{i});
        end
    end
else % Pack
   num=1;
   for i=1:nargin
      name=inputname(i);
      if isempty(name)
         name=sprintf('ans%d',num);
         num=num+1;
      end
      eval(['y.' name '=varargin{i};'])
   end
   varargout{1}=y;
end