Dear all;

I have three data sets: This is just an example...

data1=[1 5 3 4 2 0 1 2 8 2 10 2 1];

data2=[1 10 ...

data3=[4 3 ...

I would like to sum by a step of 2 ,3 4 etc.. along data1 file. That means data1 becomes now:

data1_2 =[6 7 2 3 10 12]

data_3 =[9 6 11 14]

data_4 =[13 5 22]

data_5 =[15 13]

I did it and it works..

But I want to improve it to do the following:

Continue the sum calculation till the same length of the original data is reached. That means:

data1_2 =[6 7 2 3 10 12 12 10 3 2 7 6];

The result should be in case of summing 3 numbers for example like this:

data1_3=[9 6 11 14 13 12 3 12 9 6 1 14]

Here is my code:

##########################################

for i=1:1:length(data1);

step=floor(length(data1)./i);

for j=1:1:step

start_idx=i*(j-1)+1;

end_idx=i+start_idx-1;

Sum_data1(i,j)=sum(data1(start_idx:end_idx));

end

end

#################################

Thanks you gentlemen for your helps…

Cheers