clear 
clear path 

global Nx Ny Nz
global lat long dz dm mdep
global delt_su su_its t_su delt
global descriptor this_path
global f deltaf Q beta r_expt r_heat H
global time rots it
global g Cp rho_bar alpha
global u v t w
global iterations


param_file_name =   ...
   input(' Please enter the name of the m-file with the parameters for this run : ','s') ;
feval(param_file_name) ;
path   = this_path 
cmdstr=['cd ' path ];
eval(cmdstr);
path=pwd


sizeit=size(iterations);
totalt=zeros(sizeit(1),1);
figure;hold on
for i=1:sizeit(1)
tfilename=(['T.' iterations((i),1:10) ]);
t=rdmeta(tfilename,'b');
totalt(i)=sum(sum(sum(t(:,:,:)))/(Nx*Ny*Nz*20);
plot(eval(iterations((i),1:10)),totalt(i,:),'.');drawnow
end