%{
--------- Start of Matlab block comment --------

% Delete the three lines above and the corresponding three lines
% below to delete the block commenting that was done during class.

%-----------------------------------------------------------------------
% A simple script for A321 to illustrate Matlab plotting other than
% via the usual plot() function. you can turn echo off if you don't want
% to see all of the instructions being executed.
%
%   Randall Bramley
%   Initiated    : Fri 28 Sep 2007, 06:38 PM
%   Modified     : Thu 17 Jul 2008, 03:20 PM, to include staircase
%   Last Modified: Mon 09 Mar 2009, 11:21 AM
%-----------------------------------------------------------------------

n = 10;

%--------------
%  An area plot
%--------------
z = -pi:pi/10:pi;
figure;
area([sin(z); cos(z)]);
title('Using Area Plotting')
disp('Using Area Plotting')
disp('Hit return to continue');
pause;

%--------------------
%  A simple bar chart
%--------------------
x = -3:0.2:3;
y = exp(-x.*x);
figure;
bar(x, y);
title('Bar Chart')
disp('Bar chart')
unstack;
disp('Hit return to continue');
pause;

%----------------
%  A 3D bar chart
%----------------
figure;
bar3(x, y);
title('3D Bar Chart')
unstack;
disp('3D Bar Chart')
disp('Hit return to continue');
pause;

%-----------------
%  A staircae plot
%-----------------
figure;
stairs(x, y);
title('Staircase Plot')
unstack;
disp('Staircase Plot')
disp('Hit return to continue');
pause;

%---------------------------------------------------
% Disassembled pie chart.
% Notice that I used rand, not randn. Try it and
% see what Matlab's pie does with the negative data.
%---------------------------------------------------
x = rand(n,1);
figure;
pie(x, x == max(x)); % This distinguishes the largest slice
title('pie chart');
unstack;
disp('Pie chart');
disp('Hit return to continue');
pause;
close all;

----------- End of Matlab block comment --------
%}

%------------------------------------------------------------------------
% A drawnow example. Without the pause or drawnow command, all you see is
% the last plot. I choice m data points so that when Matlab *does* show
% all of the graphs because of a drawnow, they won't zip past too fast
% to see.
%------------------------------------------------------------------------
n = 24;
m = 400000;
close all
disp('Nex, show 12 iterations of a randn() vector being plotted')
figure;
for k = 1:n
    plot(randn(m,1));
    title(sprintf('Iteration %d', k))
    %------------------------------------------------------
    % Need to insert either a pause here (e.g., pause(0.5))
    % or the "drawnow" command.
    %------------------------------------------------------
end
unstack;
disp('Hit return to continue');
pause;

%------------------------------------------------------------------------
% With drawnow:
%------------------------------------------------------------------------
n = 24;
m = 400000;
close all
disp('Now, show 12 iterations with drawnow in the loop')
figure;
disp('resize graphics window if desired, then hit return');
pause;
for k = 1:n
    plot(randn(m,1));
    title(sprintf('Iteration %d', k))
    drawnow
end

%------------------------------------------------------------------------
% With pause:
%------------------------------------------------------------------------
n = 24;
m = 400000;
close all
disp('Now, show 12 iterations with drawnow in the loop')
figure;
disp('resize graphics window if desired, then hit return');
pause;
for k = 1:n
    plot(randn(m,1));
    title(sprintf('Iteration %d', k))
    pause(0.5)
end