Price vs sq in for one board (ignoring extra boards)

clear all
close all
clc

x = 0:.01:16;

% Pricing formulas for OSH Park, Circuits.io and iTead Studio
OSH = 5.00000 * x;
CIR = 0.87427 * x + 6.50;
ITE = (9.90) * (heaviside(x) - heaviside(x - 3.875)) + ...
    (22.00) * (heaviside(x - 3.875) - heaviside(x - 7.750)) + ...
    (24.90) * (heaviside(x - 7.750) - heaviside(x - 15.5)) + ...
    (38.00) * heaviside(x - 15.5);
UPV = 19.00 + (1 * x * (2 - 1));

hold on
plot(x, OSH, 'red');
plot(x, CIR, 'blue');
plot(x, ITE, 'green');
plot(x, UPV, 'Color', [1 0 1]);
title('Price vs sq in for one board (ignoring extra boards)')
xlabel('Area in sq in')
ylabel('Cost in USD')
legend('OSH Park', 'Circuits.io', 'iTead', 'Upverter', 'Location', 'NorthWest')
grid on

% Intersection points
text(1.57, 5.37, '\uparrow (1.57 sq in, $7.87)', 'HorizontalAlignment', 'left')