searchStruct

function f=searchStruct(d,field)

Searches a struct for specified fields.  Acts like a recursive
'isfield' searching down the struct chain.

For example: s.a.b.c, field={'a','b','c'}

Input:
  s     - structure
  field - cell array of fields to search.  

Output:
  f - 1 if true, 0 if false

Author: Michael Loh

0001 function f=searchStruct(s,field)
0002 
0003 %function f=searchStruct(d,field)
0004 %
0005 %Searches a struct for specified fields.  Acts like a recursive
0006 %'isfield' searching down the struct chain.
0007 %
0008 %For example: s.a.b.c, field={'a','b','c'}
0009 %
0010 %Input:
0011 %  s     - structure
0012 %  field - cell array of fields to search.
0013 %
0014 %Output:
0015 %  f - 1 if true, 0 if false
0016 %
0017 %Author: Michael Loh
0018 
0019 cnt=length(field);
0020 c=1;
0021 str=sprintf('s');
0022 while(c<=cnt)
0023   t=isfield(eval(str),field{c});
0024   if (t==0)
0025     f=0;
0026     return
0027   end
0028   str=strcat(str,sprintf('.%s',field{c}));
0029   c=c+1;
0030 end
0031 
0032 f=1;