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

it = input(' Please enter iteration : ','s') 

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

qfilename=(['qtave.' it ]);
qffilename=(['qftave.' it ]);
qrfilename=(['qrtave.' it ]);
qsfilename=(['qstave.' it ]);
q=rdmeta(qfilename,'b');
qf=rdmeta(qffilename,'b');
qr=rdmeta(qrfilename,'b');
qs=rdmeta(qsfilename,'b');