How to plot for different parameter values of a, p1 and p2

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Hi all, I want to plot using different parameter values of a, p1 and p2 in the same plot in the following code. Like a = 1,2,3 , p1= 1,2,3 and p2= 1,2,3.
My code:
a = 1;
r1 = 1/2.*log2(1+(p1/(a+ p2)));
r2 = 1/2.*log2(1+(p2/(a)));
plot([0 r1],[r2 r2]);
hold on;
plot([r1 r2],[r2 r1]);
plot([r2 r2],[r1 0]);
vetri veeran
vetri veeran on 21 Oct 2015
I want to plot r1 and r2 on x and y axis respectively. Also, I need to compare the difference of r1 and r2 plot by using different values of a, p1 and p2.

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Accepted Answer

Image Analyst
Image Analyst on 21 Oct 2015
Try this:
% Define variables.
a = [1,2,3];
p1 = [1,2,3];
p2 = [1,2,3];
for index = 1 : length(p1)
subplot(2, 2, index);
r1 = 1/2. * log2(1+(p1(index) / (a(index)+ p2(index))));
r2 = 1/2 .* log2(1+(p2(index) / (a(index))));
fprintf('For index = %d, a=%d, p1 = %d, p2 = %d, r1 = %f, r2 = %f\n', ...
index, a(index), p1(index), p2(index), r1, r2);
plot([0 r1],[r2 r2], 'b*-', 'LineWidth', 3, 'MarkerSize', 15);
hold on;
plot([r1 r2],[r2 r1], 'b*-', 'LineWidth', 3, 'MarkerSize', 15);
plot([r2 r2],[r1 0], 'b*-', 'LineWidth', 3, 'MarkerSize', 15);
grid on;
caption = sprintf('a=%d, p1 = %d, p2 = %d', a(index), p1(index), p2(index));
title(caption, 'FontSize', 20);
xlabel('X', 'FontSize', 20);
ylabel('Y', 'FontSize', 20);
% Set up figure properties:
% Enlarge figure to full screen.
set(gcf, 'Units', 'Normalized', 'OuterPosition', [0 0 1 1]);
% Get rid of tool bar and pulldown menus that are along top of figure.
set(gcf, 'Toolbar', 'none', 'Menu', 'none');
% Give a name to the title bar.
set(gcf, 'Name', 'Demo by ImageAnalyst', 'NumberTitle', 'Off')
Image Analyst
Image Analyst on 21 Oct 2015
Delete the "subplot" line at the beginning of the for loop.

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