Combine two matlab plotting commands to execute loops of figures

I am a new user in matlab, i have two separate commands and would like to combine them so as to produce figures in a loop with a specific pause

these are the two separate approaches

1. Create the base figure from A , A2, A3 , ... An

          who A*
          filenames = who('A*')
          for i=1:3
             pause(2);contourf(eval(filenames{i})),colorbar
          end

2. Second portion is to superimpose a quiver with B, B1, B2 ....N and C,C2,C3,...n

   [nx,ny]= size(A)
          xx=1:1:ny; 
          yy=1:1:nx; 
          pause(2);contourf(eval(xx,yy,A)),colorbar
          hold on
          delta = 8;
          quiver(xx(1:delta:end),yy(1:delta:end),B(1:delta:end,1:delta:end), ...
          C(1:delta:end,1:delta:end),1)
          hold off

3. I tired to combine them but i think i am missing something, probably the eval ?

   filenames = who('A*')
          B10 = who('B')
          C10 = who('C')
          for i=1:3
             [nx,ny]= size(A)
             xx=1:1:ny; 
             yy=1:1:nx; 
             pause(2);contourf(eval(xx,yy,filenames{i})),colorbar
             hold on
             delta = 8;
             quiver(xx(1:delta:end),yy(1:delta:end),B10{i}(1:delta:end,1:delta:end), ...
             C10{i}(1:delta:end,1:delta:end),1)
             hold off
          end

Any help is welcome

[Michelle Hirsch]

George -

Could you explain more of what you are trying to achieve by using eval? I almost always find that there's a better option than using eval, leading to code that's more robust and typically a fair bit easier to read.

-Michelle