How to add date column with the corresponding variables in rolling window

Dear Matlab-users,

My excel file consists of 4 columns of daily data. First column represent the date column which is same for all the 3 rest variable columns. I calculating the genhurst function for my 3 series in a rolling window framework with the following code.

[numeric,textdata,rawdata]=xlsread('JK1.xlsx');

num1=numeric(:,isfinite(numeric(1, :)));

indexdata = rawdata(:,1:4);

%%My rolling

windowsize = 100;

startrows = 1:size(num1, 1)-windowsize+1;

HH = cell(numel(startrows), size(num1, 2));

for col = 1:size(num1, 2)

for row = 1:numel(startrows)

HH{row, col} = genhurst(num1(startrows(row):startrows(row)+windowsize-1, col));

end

end

Here, I want to add date column (available as the 1st column in the indexdata) in the rolling window framework so that can get the rolling estimated values correponding to the particular date.

For your convenience, I have attached my sample datafile.

Please help me.

Thank you.