You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: boxprep.m
    path of file: ./repos/CBIG/external_packages/SD/SDv1.5.1-svn593/AnalysisTools
    
    the code of the file until where you have to start completion: % Contact ythomas@csail.mit.edu or msabuncu@csail.mit.edu for bugs or questions 
%
%=========================================================================
%
%  Copyright (c) 2008 Thomas Yeo and Mert Sabuncu
%  All rights reserved.
%
%Redistribution and use in source and binary forms, with or without
%modification, are permitted provided that the following conditions are met:
%
%    * Redistributions of so
    
function z = boxprep(varargin)
% z = boxprep(varargin)
% Prepare multiple inputs for boxplot call

% A typical use is in conjunction with
% the M-file boxplots. For example,
% x = rand(20,4);
% y = rand(1,30); % five sets of datda
% names = strvcat('c1','c2','c3','c4','c5');
% boxplots(boxprep(x,y),names,'random data')
% June 16, November 12, 2003, Herman Gollwitzer

n = length(varargin);
tmp = varargin{1};
s = size(tmp);
if s(1) == 1
	z = tmp';
else
	z = tmp;
end