How to select specific data from one matrix and place it in another
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
stelios loizidis
am 2 Nov. 2020
Kommentiert: Ameer Hamza
am 2 Nov. 2020
Hello,
I have the following problem. I have a large matrix A (1X960). At positions 336 I have the prices for 14 consecutive Mondays. That is, every Monday has 24 prices. Then, in the next 312 positions I have data for 13 consecutive Fridays (every Friday has 24 prices) and in the last 312 positions I have data for 13 consecutive Saturdays (every Saturday has 24 prices).
What I'm trying to do is this: In a new matrix B I want to put the data in order. That is, to enter first the 24 values of Monday, then the 24 values of Friday and then the 24 values of Saturday. This should continue for all the data in matrix A. Your help is important !!!
Akzeptierte Antwort
Ameer Hamza
am 2 Nov. 2020
Try this
data = 1:960;
A = reshape(data, 24, []).';
B = zeros(size(A));
B(1:3:end, :) = A(1:14, :);
B(2:3:end, :) = A(15:27, :);
B(3:3:end, :) = A(28:40, :);
B = reshape(B.', 1, [])
4 Kommentare
Weitere Antworten (2)
dpb
am 2 Nov. 2020
The following can be optimized, but if I understand you want the data reordered by hour for each day, then the basic idea for any number of days and observations per day assuming every daily observation is complete set of numPerDay.
nDays=[14,13,13];
numPerDay=24;
dIx=nDays*numPerDay;
ix1=[1 cumsum(dIx(1:numel(nDays)-1))+1];
for i=1:24
B(i,:)=A(ix1);
ix1=ix1+1;
end
0 Kommentare
Siehe auch
Kategorien
Mehr zu Get Started with MATLAB finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!