write_structure.m

来自「这是一个关于MATLAB的函数」· M 代码 · 共 64 行

function dummy = write_structure(st,args)
% WRITE Store a value to the location pointed to by a STRUCTURE object.
% 
% 	WRITE(st,val,member) - writes the value VAL to the STRUCTURE member specified by MEMBER.
%     
% 	WRITE(st,val,member,varargin) - writes the value VAL to the STRUCTURE member specified 
% 	by member, where VARARGIN are extra WRITE options. See WRITE options of MEMBER.
% 
% 	WRITE(st,index,val,member) - writes the value VAL to the STRUCTURE member of the STRUCTURE 
%     element INDEX.
%     
% 	WRITE(st,index,val,member,varargin) - writes the value VAL to the STRUCTURE member of the STRUCTURE 
%     element INDEX, where VARARGIN are extra WRITE options. See WRITE options of MEMBER.
% 
%   Copyright 2002 The MathWorks, Inc.
%   $Revision: 1.12 $  $Date: 2002/05/30 15:34:51 $


error(nargchk(2,2,nargin));
if ~ishandle(st),
    error('First parameter must be a STRUCTURE handle ');
end

nargs = length(args);
if isempty(args),
    error('Not enough input arguments.');
elseif ischar(args{1}),
    if nargs<2,
        error('Incorrect number of inputs, please specify the member name. ');
    end
    struct_idx = ones(1,length(st.size));
    extra_args = args;
elseif isnumeric(args{1}),
    nargs = nargs-1;
    if nargs<2,
        error('Incorrect number of inputs, please include the value. ');
    end
    if any(round(args{1})<=0),  
        error(['Invalid STRUCTURE index: [' num2str(args{1}) '] ']);
    elseif isempty(args{1}),    
        struct_idx = ones(1,length(st.size));
    else                    
        struct_idx = args{1};
    end
    extra_args = {args{2:end}};
else
    error('Second Parameter must be a STRUCTURE index or a STRUCTURE membername.');
end

if mod(nargs,2)~=0
    error(['WRITE requires member name and value arguments to be specified in pairs.']);
end
if ~iscellstr({extra_args{1:2:nargs-1}})
    error(['WRITE requires member name and value arguments to be specified in pairs.']);
end

for i=1:2:nargs-1
    name  = extra_args{i};
    value = extra_args{i+1};
    membobj = getmember(st,struct_idx,name);
    write(membobj,value);
end

% [EOF] write_structure.m