I have a monthly time series data in matrix form with 4 columns. I want to sum up always the 3 row elements of the columns. 1-3,3-6,6-9,... ,to get quaterly data. How can I do this in matlab ?
1 visualizzazione (ultimi 30 giorni)
Mostra commenti meno recenti
sum(A(1:3)); sum(A(3:6)); sum(A(6:9)); ... % because I´ve monthly values from 1952-2013 it's impossible to solve all this in the by hand upper way. Does somebody knows, how I can create a function or something else to solve this in a faster way? %
0 Commenti
Risposta accettata
dpb
il 10 Dic 2015
I are complete years, then
reshape(sum(reshape(x,3,[])),numel(x)/(3*size(x,2)),[])
If lacking complete year, operate on the modulo/3 number of rows which do have and have to treat the remainder as special case.
Più risposte (0)
Vedere anche
Categorie
Scopri di più su Creating and Concatenating Matrices in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!