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% Homework 3 (Monday class) - Sample solution
% Examples of 2D Plotting Functions
%

clear all

% Bar Graph
data = [7 3 9 2 4 11 17 2 5 4 8];	% Generate some data
bar( [0:length(data)-1], data );	% Plot, from 0<= x <= 10
title('Sample Bar Graph');
pause

% Polar Graph
theta = [0:0.01:2*pi];			% Theta in radians, NOT degrees.						
rho = 2*sin(theta) .* cos(theta);		
polar(theta, rho);
hold
rho = sin(theta + pi/4) .* cos(theta + pi/4);
polar(theta, rho);
title('Sample Polar Graph');
hold off
pause

% Histogram
data = rand([1 100]);			% Generate 100 random numbers
hist(data, 10);				% See how they were spaced
title('Histogram of random data')
pause

% Fill
range = [0:0.01:2*pi];			% Range in radians for sin()
fill(range, sin(range), 'g');		% Plot the sin() w/ green fill
title('One period of sin(x) w/ green fill');
pause

% Quiver
x = [0:10];
y = exp(x);
quiver(x,y);							
title('Something simple with quiver()');
pause

% Stairs
steps = [1:10 10:2:20 20:-0.5:0];
stairs(steps);
title('Sample Stairs Plot');
pause

% Rose
petals = [ 0:0.01:pi/2 pi/6:0.01:pi/3];
rose([petals pi/2petals pi+petals 3*pi/2+petals], 10)
title('Does it look even a little bit like a rose?');
pause