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: icatb_barweb.m
    path of file: ./repos/gift/GroupICAT/icatb/icatb_helper_functions
    
    the code of the file until where you have to start completion: function handles = icatb_barweb(barvalues, errors, width, groupnames, bw_title, bw_xlabel, bw_ylabel, bw_colormap, gridstatus, bw_legend, error_sides, legend_type)

%
% Usage: handles = barweb(barvalues, errors, width, groupnames, bw_title, bw_xlabel, bw_ylabel, bw_colormap, gridstatus, bw_legend, error_sides, legend_type)
%
% Ex: handles = barweb(my_barvalues, my_errors, [], [], [], [], [], bone, [], bw_legend, 1, 'axis')
%
% barweb is the m-by-n matrix of barvalues to be plotted.
% barweb calls the MATLAB bar function and plots m groups of n bars using the width and bw_colormap parameters.
% If you want all the bars to be the same color, then set bw_colormap equal to the RBG matrix value ie. (bw_colormap = [1 0 0] for all red bars)
% barweb then calls the MATLAB errorbar function to draw barvalues with error bars of length error.
% groupnames is an m-length cellstr vector of groupnames (i.e
    
function and plots m groups of n bars using the width and bw_colormap parameters.
% If you want all the bars to be the same color, then set bw_colormap equal to the RBG matrix value ie. (bw_colormap = [1 0 0] for all red bars)
% barweb then calls the MATLAB errorbar function to draw barvalues with error bars of length error.
% groupnames is an m-length cellstr vector of groupnames (i.e. groupnames = {'group 1'; 'group 2'}).  For no groupnames, enter [] or {}
% The errors matrix is of the same form of the barvalues matrix, namely m group of n errors.
% Gridstatus is either 'x','xy', 'y', or 'none' for no grid.
% No legend will be shown if the legend paramter is not provided
% 'error_sides = 2' plots +/- std while 'error_sides = 1' plots just + std
% legend_type = 'axis' produces the legend along the x-axis while legend_type = 'plot' produces the standard legend.  See figure for more details
%
% The following default values are used if parameters are left out or skipped by using [].
% width = 1 (0 < width < 1; widths greater than 1 will produce overlapping bars)
% groupnames = '1', '2', ... number_of_groups
% bw_title, bw_xlabel, bw_ylabel = []
% bw_color_map = jet
% gridstatus = 'none'
% bw_legend