Changing the axes of a polar plot

I have a polar plot, however it does not fit on the axes given. How can I resize the axes?

t = 0:pi/100:2*pi;

r = abs((2+cos(t)).*(exp(2*1i*t)));

the = angle((2+cos(t)).*exp(2*1i*t));

polar(the,r)

[X,Y] = pol2cart(the,r); % get Cartesian coordinates

factor = 5; % sampling ratio; factor=5 means the arrow will be drawn for every 5th point on the curve

i = 1; % index into quiver array

j = factor * factor; % index into X,Y Cartesian coordinates

u = []; % array for x component of quiver vector

v = []; % array for y component of quiver vector

xt = []; % array for x position of quiver vector

yt = []; % array for y position of quiver vector

while (j+1) <= length(X)

xt(i) = X(j);

yt(i) = Y(j);

    u(i) = X(j+1) - X(j);

    v(i) = Y(j+1) - Y(j);

    i = i + 1;

    j = i*factor;

end

hold on;

quiver(xt, yt, u, v);

Answer 1

[Star Strider]

One way to do that is to add a second polar plot, then make it invisible:

t = 0:pi/100:2*pi;
r = abs((2+cos(t)).*(exp(2*1i*t)));
the = angle((2+cos(t)).*exp(2*1i*t));
polar(the,r)
hi = polar(the, r*4/3);                                             % Add Second Polar Plot
set(hi, 'Color','none')                                             % Make Second Polar Plot Invisible
[X,Y] = pol2cart(the,r); % get Cartesian coordinates
   . . . REST OF THE CODE . . .

I used a factor of 4/3 to expand the radius of the plot to 4. Change that to whatever works best for you.