Summation of every nth column

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Adnan Jayyousi
Adnan Jayyousi on 17 Jun 2022
Commented: Jan on 19 Jun 2022
Hello everyone,
I've imported xlsx file containing some data related to energy consumption, It was sampled in 15 minutes rate.
I want to convert this table to hourly values, in order to make hourly values I need to sum every 4 columns and store that data in a new matrix that sizes [8760x1], I want all the data be in series (just one column).
The data are for full year, so i expect to get 8760 (hours in a year) rows , and 1 column.
Thanks in advance.

Answers (1)

Jan on 17 Jun 2022
Edited: Jan on 17 Jun 2022
S = size(LoadProfile);
X = reshape(LoadProfile, S(1), 4, S(2) / 4);
X = reshape(sum(X, 2), S(1), S(2) / 4).';
Result = X(:);
Jan on 19 Jun 2022
Are you sure? This
Result = X(1,:)
crops the first row from the matrix X. My code uses X(:) to convert all elements of X into a column.

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