matlab画图固定坐标轴范围

A = [0.1 1 4];
%B = 2 * ones(1, 3);


h = figure(1);


for i = 1:15
    bar(A);
    axis([0 4 0 80000]);
    set(gca,'xtick',[0:1:4]);
    set(gca,'ytick',[0:4000:80000]);
   %A = A .* B;
    A = 2*A;
    F(i) = getframe(h);
end


movie2avi(F, 'increase.avi', 'compression', 'None');