Fully 3D Graph on Matlab

[apifire]

Otai2 sekalian, saya nk mohon bantuan sikit..saya nak dapat kan output yg full 3D daripada code matlab ni tapi x dapat..saya just dapat buat satu line saja..saya dah try "surf" tapi asyik error "Z must be a matrix, not a scalar or vector"..tu je masalah saya sekarang..just nak dapatkan full 3D..tolong ye..

u=83333.3; %Arrival Rate
b=[15000 16500 18000 19500 21000 22500 24000 25500 27000 28500 30000]; %Burst Size
s=1500; %Packet Size
a=(b./s)-1;
r=factorial(a);
T=0.00012; %Variable Inter Arrival Time
k=(u.*T).^a;
x=(k./r).*exp(-u.*T); %TimeBased




B=15000;
t=[0.00012 0.000132 0.000144 0.000156 0.000168 0.00018 0.000192 0.000204 0.000216 0.000228 0.00024];
a1=(B./s)-1;
m=(u.*t).^a1;
r1=factorial(a1);
y=(m./r1).*exp(-u.*t); %SizeBased


z=x+y;




figure
plot3(b,t,z,'-ro');
xlabel('Sized Based')
ylabel('Time Based')
zlabel('Probability Time + Sized Based')
title('Probability Number of Packet')

[sH@m]

Easy shoot, lihat pada error i.e. :

??? Error using ==> ???

Error in ==> ??? at ???

# Maaf, tak pernah cuba MATLAB.