Plotting in 3d

I cannot put all of the plot into one window. How do I plot in 3D?

v=3E8;
f=760E12;
x=zeros(400);
y=zeros(400);
z=zeros(400);
xx=zeros(400);
yy=zeros(400);
for tstep=1:360
    t=tstep*1e-4;
    x(tstep)=v*t;
    y(tstep)=v/f*cos(tstep*pi/180);
    z(tstep)=v/f*sin(tstep*pi/180);

      xx(tstep)=(x(t)-y(t)*cos(45*pi/180));
      yy(tstep)=z(t)-y(t)*sin(45*pi/180);       
      hold on;
      plot(xx(tstep),yy(tstep),'-b');
  end;
  hold off;

Answer 1

[KSSV]

v=3E8;
f=760E12;
x=zeros(400);
y=zeros(400);
z=zeros(400);
xx=zeros(400);
yy=zeros(400);
for tstep=1:360
    t=tstep*1e-4;
    x=v*t;
    y=v/f*cos(tstep*pi/180);
    z=v/f*sin(tstep*pi/180);
    xx(tstep)=(x-y*cos(45*pi/180));
    yy(tstep)=z-y*sin(45*pi/180);
    hold on;
    plot(xx(tstep),yy(tstep),'.b');
end
hold off;

Can be achieved without loop also.