How to plot quiver plot to show the velocity profile?

I have this coding and I would like to plot a 2D quiver plot to show the instantaneous velocity but I can't get the right plot.

z=0;

i=0;

y=0;

while(i<1000)

 n = 1;

 ans=0;

term=0;

 while (n<1000)

a=(1/n^3)*(1-(cosh(n*pi*y/h))/(cosh(n*pi*w/(2*h))))*sin(n*pi*z/h);

b=1-(((192*h)/(n^5*pi^5*w))*tanh(n*pi*w/(2*h)));

term=(48*Q*a)/(pi^3*h*w*b);

ans=ans+term;

n=n+2;

 end

i=i+1;

result((i+1),1)=ans;

result((i+1),2)=z;

z=h/999*i;

end

xlswrite('Figure6.xlsx',result)

width = xlsread('Figure6.xlsx', 'B:B')

avevelocity = xlsread('Figure6.xlsx', 'A:A')

plot(width,avevelocity);

quiver(X,Y,width,avevelocity)

Any suggestions?? Thank you.