I want to store mean_2....mean_8, std_2....std_8, and coVariance as separate columns in a file. Help Please?

This Code calculates IntervalFeatures of Erp signal with 256 time frames and plots them Datapoints are store in A

___________HowTheCodeWorks________________________________________________

each 1x4 sliding sub-matrix is made a column for eg:- if A is 1x6 you would get 1-2-3-4, 2-3-4-5, 3-4-5-6 each as a column ending with 3 columns. for 1x10 matrix, you would get 7 columns

calculating the mean of every column

Subtract each value of the column with the mean value of corresponding column finally element-wise squaring, mean of each column and then element-wise sqrt to get the output.

```
A=firstElec;
%___________Length2_____________________
reshaped_2 = im2col(A,[1 2],'sliding');
mean_2 = mean(reshaped_2);
out1 = bsxfun(@minus,reshaped_2,mean_2);
std_2 = sqrt(mean(out1.^2))
%___________Length4_____________________
reshaped_4 = im2col(A,[1 4],'sliding');
mean_4 = mean(reshaped_4);
out2 = bsxfun(@minus,reshaped_4,mean_4);
std_4 = sqrt(mean(out2.^2))
%___________Length8_____________________
reshaped_8 = im2col(A,[1 8],'sliding');
mean_8 = mean(reshaped_8);
out3 = bsxfun(@minus,reshaped_8,mean_8);
std_8 = sqrt(mean(out3.^2))
%___________CoVariance__________________
begInt = 1;
endInt =256;
l=endInt - begInt + 1;
arrayCovar = zeros(1,257);
j=1;
for k=1:256
coVar = 1/l *((A(k)*k) - (mean(A(k:j))*((begInt + endInt)/2)));
j= 1+k;
arrayCovar(k)=coVar;
end
coVariance = arrayCovar(:,1:256);
disp(coVariance)
```