%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 qiterations


param_file_name =   ...
   input(' Please enter the name of the m-file with the parameters for this run : ','s') ;
feval(param_file_name) ;

qiterations

itstart = input(' Please enter start iteration : ','s') 
itend = input(' Please enter end iteration : ','s') 

sizeit=size(qiterations);
for i=1:sizeit(1)
iter(i)=eval(iterations(i,1:10));
end
nitstart=find(iter==eval(itstart))
nitend=find(iter==eval(itend))

path   = this_path 
cmdstr=['cd ' path ];
eval(cmdstr);
path=pwd

sumq=zeros(Nx,Ny,Nz);
sumqr=zeros(Nx,Ny,Nz);
sumqf=zeros(Nx,Ny,Nz);
sumqs=zeros(Nx,Ny,Nz);
counter=0;

for i=nitstart:nitend
qfilename=(['qtave.' qiterations((i),1:10) ]) ;
qffilename=(['qftave.' qiterations((i),1:10) ]) ;
qrfilename=(['qrtave.' qiterations((i),1:10) ]);
qsfilename=(['qstave.' qiterations((i),1:10) ]);
q=rdmeta(qfilename,'b');
qf=rdmeta(qffilename,'b');
qr=rdmeta(qrfilename,'b');
qs=rdmeta(qsfilename,'b');
sumq=sumq+q;
sumqf=sumqf+qf;
sumqr=sumqr+qr;
sumqs=sumqs+qs;
counter=counter+1;
end
meanq=sumq/counter;
meanqf=sumqf/counter;
meanqr=sumqr/counter;
meanqs=sumqs/counter;