function plotcircle(coords, radius, colorSpec)
% function plotcircle(coords, radius, colorSpec)
% Plots a circle at given coordinates, with given radius using a given
% color specification
% Input         coords: tuple of x and y coordinate
%               radius: radius of circle to plot
%               colorSpec: color of circle as Color Specification
x = coords(1);
y = coords(2);
angle = 0:0.01:2*pi;
xp = radius * cos(angle);
yp = radius * sin(angle);
plot(x + xp, y + yp, colorSpec);
end