function varargout = dimfun(fn, dim, varargin)
% Helper function. Used by rowfun and colfun to apply functions to rows and
% columns of matrices. I'm also using it in my slow m-file version of histc for
% use in Octave. However, the nd-array stuff is a bit too hacky, and I'm still
% getting my head around it. That's why this is private.

varargout = cell(1, max(1, nargout));
[varargout{:}] = dimmap(fn, dim, varargin{:});
varargout = cellmap(@cell2mat, varargout);