% curv1.m  96/08/06
%
% Plot unit circle in xy plane
%

    np=80;
    z=exp(sqrt(-1)*(0:1:np)*2*pi/np);
    plot(z,'w-');
    axis square;
    hold on;
    xmax=1.5;
    ymax=1.5;
    axis([-xmax xmax -ymax ymax]);
    plot([0 0],[-ymax ymax],'w-');
    plot([-xmax xmax],[0 0],'w-');
    hold off;
