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

figure;hold on
%set(gca,'XLim',[10000 35000])
%set(gca,'YLim',[20 35])
sizeit=size(iterations);
maxt=zeros(sizeit(1));

for i=1:sizeit(1)
ufilename=(['U.' iterations((i),1:10) ]);
u=rdmeta(ufilename,'b');
vfilename=(['V.' iterations((i),1:10) ]);
v=rdmeta(vfilename,'b');

roughspeed=sqrt(u.*u +v.*v);

maxroughspeed(i)=max(max(max(roughspeed)));
plot(eval(iterations((i),1:10)),maxroughspeed(i),'o');drawnow
end

title(descriptor)
xlabel('timestep')
ylabel('maximum (uninterpolated) speed')
grid