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Sum values for a spreedsheet of excel

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Tony Castillo
Tony Castillo 2016-9-23
评论： Tony Castillo 2016-10-4
Hello, i want to do this:
  1. load a excel spreedsheet
  2. read that excel spreedsheet
  3. set a stepsize of 4 numbers
  4. sum from 4 by 4 the elements of the column vector
  5. generate a new column vector only with the the new values (for instance if at the begining i had 8 values now i should has only 2 values)
this was the code that i did for it,
k = 1;
stepsize = 4;
xlsread('DatosCM.xlsx', 1, 'c2:c10');
for nn = 2:stepsize:10-stepsize
partsum(k) = sum(vekt(nn:nn+stepsize-1));
k = k+1;
end
that code send me this error Index exceeds matrix dimensions.
Error in consumo2 (line 7) partsum(k) = sum(vekt(nn:nn+stepsize-1));

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Image Analyst
Image Analyst 2016-9-24
Try
vekt = xlsread(............

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