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- function val=jsonopt(key,default,varargin)
- %
- % val=jsonopt(key,default,optstruct)
- %
- % setting options based on a struct. The struct can be produced
- % by varargin2struct from a list of 'param','value' pairs
- %
- % authors:Qianqian Fang (fangq<at> nmr.mgh.harvard.edu)
- %
- % $Id: loadjson.m 371 2012-06-20 12:43:06Z fangq $
- %
- % input:
- % key: a string with which one look up a value from a struct
- % default: if the key does not exist, return default
- % optstruct: a struct where each sub-field is a key
- %
- % output:
- % val: if key exists, val=optstruct.key; otherwise val=default
- %
- % license:
- % BSD, see LICENSE_BSD.txt files for details
- %
- % -- this function is part of jsonlab toolbox (http://iso2mesh.sf.net/cgi-bin/index.cgi?jsonlab)
- %
- val=default;
- if(nargin<=2) return; end
- opt=varargin{1};
- if(isstruct(opt) && isfield(opt,key))
- val=getfield(opt,key);
- end
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