Using For Loop in a function over all files in a folder with Matlab

Dear Matlab Users,

I want to use for loop in a function over all files in a folder.

I want to apply the genhurst function over all files in a folder.

H = genhurst(S) 

where S is the time series with 1*6154 vector.

Here, I am explaining the details of the genhurst function as follows.

function [mH,sH]=genhurst(S,q,maxT)
if nargin < 2, q = 1; maxT = 19; end
if nargin < 3,  maxT = 19; end
if size(S,1)==1 & size(S,2)>1
    S = S';
elseif size(S,1)>1 & size(S,2)>1
    fprintf('S must be 1xT  \n')
    return
end
if size(S,1) < (maxT*4 | 60)
    warning('Data serie very short!')
end
L=length(S);
lq = length(q);
H  = [];
k = 0;
for Tmax=5:maxT
    k = k+1;
    x = 1:Tmax;
    mcord = zeros(Tmax,lq);
 	for tt = 1:Tmax
        dV = S((tt+1):tt:L) - S(((tt+1):tt:L)-tt);
        VV = S(((tt+1):tt:(L+tt))-tt)';
        N = length(dV)+1;
        X = 1:N;
        Y = VV;
        mx = sum(X)/N;
        SSxx = sum(X.^2) - N*mx^2;
        my   = sum(Y)/N;
        SSxy = sum(X.*Y) - N*mx*my;
        cc(1) = SSxy/SSxx;
        cc(2) = my - cc(1)*mx;
        ddVd  = dV - cc(1);
        VVVd  = VV - cc(1).*(1:N) - cc(2);
         %figure
         %plot(X,Y,'o')
         %hold on
         %plot(X,cc(1)*X+cc(2),'-r')
         %figure
         %plot(1:N-1,dV,'ob')
         %hold on
         %plot([1 N-1],mean(dV)*[1 1],'-b')
         %plot(1:N-1,ddVd,'xr')
         %plot([1 N-1],mean(ddVd)*[1 1],'-r')
        for qq=1:lq
            mcord(tt,qq)=mean(abs(ddVd).^q(qq))/mean(abs(VVVd).^q(qq));
        end
    end
    mx = mean(log10(x));
    SSxx = sum(log10(x).^2) - Tmax*mx^2;
    for qq=1:lq
        my = mean(log10(mcord(:,qq)));
        SSxy = sum(log10(x).*log10(mcord(:,qq))') - Tmax*mx*my;
        H(k,qq) = SSxy/SSxx;
    end
end
%figure
%loglog(x,mcord,'x-')
mH = mean(H)'./q(:);
if nargout == 2
    sH = std(H)'./q(:);
elseif nargout == 1
    sH = [];
end

In a folder, I have 20 Excel files having 2 columns in each file.

The first column represents the date whereas the 2nd column represent the time series.

Further, I want to calculate the monthly average of the estimated values for each time series.

Please help me to loop this function, and take the monthly average of the estimated values over all the files in a folder.

Thank you.

[Image Analyst]

What are S,q,maxT? Which variable is the "estimated" values?

[RP]

S is a column vector, and q and maxT is defined in the function. But, I have multiple column vectors, and I want to apply genhurst for the multiple column vectors.