The answer really depends on many things that you have not told us: the number type (integer / float), the required file format, the desired precision, column alignment, etc. There are different functions for saving data to text files, and each of them has different options and output file formats:
For a start you can use a simple for loop, and csvwrite to save the data, something a bit like this (untested code):
ncol = size(matrix,2);
for k = 1:ncol
... code here
D = [];
D(:,6) = wrcoef('d',c,l,'dmey',6);
D(:,5) = wrcoef('d',c,l,'dmey',5);
D(:,4) = wrcoef('d',c,l,'dmey',4);
D(:,3) = wrcoef('d',c,l,'dmey',3);
D(:,2) = wrcoef('d',c,l,'dmey',2);
D(:,1) = wrcoef('d',c,l,'dmey',1);
filename = sprintf('%s_%04f.txt', 'some_name', k)
csvwrite(filename,D)
end
