time reversal plot in lorenz system

sigma = 10;beta = 8/3;rho = 28;f = @(t,a) [-sigma*a(1) + sigma*a(2); rho*a(1) - a(2) - a(1)*a(3); -beta*a(3) + a(1)*a(2)];[t,a] = ode45(f,[100 1],[1 1 1]); plot3(a(:,1),a(:,2),a(:,3))

set(gca,'XDir','reverse')

if we take time from 100 to 1 final postion be intial position

so you are req to plot the same