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## -*- texinfo -*-
## @deftypefn  {} {@var{idx} =} dsearch (@var{x}, @var{y}, @var{tri}, @var{xi}, @var{yi})
## @deftypefnx {} {@var{idx} =} dsearch (@var{x}, @var{y}, @var{tri}, @var{xi}, @var{yi}, @var{s})
## Return the index @var{idx} of the closest point in @code{@var{x}, @var{y}}
## to the elements @code{[@var{xi}(:), @var{yi}(:)]}.
##
## The variable @var{s} is accepted for compatibility but is ignored.
## @seealso{dsearchn, tsearch}
## @end deftypefn

function idx = dsearch (x, y, tri, xi, yi, s)

  if (nargin < 5)
    print_usage ();
  endif

  idx = __dsearchn__ ([x(:), y(:)], [xi(:), yi(:)]);

endfunction


%!shared x, y, tri
%! x = [-1;-1;1];
%! y = [-1;1;-1];
%! tri = [1,2,3];
%!assert (dsearch (x,y,tri,1,1/3), 3)
%!assert (dsearch (x,y,tri,1/3,1), 2)