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: mlphint.m
    path of file: ./repos/bnt/netlab3.3
    
    the code of the file until where you have to start completion: function [h1, h2] = mlphint(net);
%MLPHINT Plot Hinton diagram for 2-layer feed-forward network.
%
%	Description
%
%	MLPHINT(NET) takes a network structure NET and plots the Hinton
%	diagram comprised of two figure windows, one displaying the first-
%	layer weights and biases, and one displaying the second-layer weights
%	and biases.
%
%	[H1, H2] = MLPHINT(NET) also returns handles H1 and  H2 to the
%	figures which can be used, for instance, to delete the  figures when
%	they are no longer needed.
%
%	To print the figure correctly, you should call SET(H,
%	'INVERTHARDCOPY', 'ON') before printing.

    
function [h1, h2] = mlphint(net);
%MLPHINT Plot Hinton diagram for 2-layer feed-forward network.
%
%	Description
%
%	MLPHINT(NET) takes a network structure NET and plots the Hinton
%	diagram comprised of two figure windows, one displaying the first-
%	layer weights and biases, and one displaying the second-layer weights
%	and biases.
%
%	[H1, H2] = MLPHINT(NET) also returns handles H1 and  H2 to the
%	figures which can be used, for instance, to delete the  figures when
%	they are no longer needed.
%
%	To print the figure correctly, you should call SET(H,
%	'INVERTHARDCOPY', 'ON') before printing.
%
%	See also
%	DEMHINT, HINTMAT, MLP, MLPPAK, MLPUNPAK
%

%	Copyright (c) Ian T Nabney (1996-2001)

% Set scale to be up to 0.9 of maximum absolute weight value, where scale
% defined so that area of box proportional to weight value.

% Use no more than 640x480 pixels
xmax = 640; ymax = 480;

% Offset bottom left hand corner
x01 = 40; y01 = 40;
x02 = 80; y02 = 80;

% Need to allow 5 pixels border for window frame: but 30 at top
border = 5;
top_border = 30;

ymax = ymax - top_border;
xmax = xmax - border;

% First layer

wb1 = [net.w1; net.b1];
[xvals, yvals, color] = hintmat(wb1');
% Try to preserve aspect ratio approximately
if (8*net.nhidden < 6*(net.nin + 1))
  delx = xmax; dely = xmax*net.nhidden/(net.nin + 1);
else
  delx = ymax*(net.nin + 1)/net.nhidden; dely = ymax;
end