Index exceeds array bounds from CorrCoeff
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
cniv_we
am 19 Aug. 2019
Kommentiert: cniv_we
am 19 Aug. 2019
I am trying to calculate cumulative correlation coefficient matrix from 2 different arrays saved in matrix X
Now I only need to save the correlation coefficient in position (1,2) as corrcoeff typically gives 2x2 elements. However, I got this error code: Index in position 2 exceeds array bounds (must not exceed 1).
What's wrong with code below?
for b = 1:1000
corr_coeff = corrcoef(X(1:b,1),X(1:b,2)) % Calculate the cumulative corr.coeff between X(1:b) of column 1 and X(1:b) of column 2
CC(b,:) = [b corr_coeff(1,2)];
end
When I do not give the command CC(b,:) = [b corr_coeff(1,2)]; I don't have any problem?
0 Kommentare
Akzeptierte Antwort
the cyclist
am 19 Aug. 2019
The problem is that in the first iteration of your loop, you are taking the correlation of two scalar values:
corrcoef(X(1,1),X(1,2))
which will just give the value 1, not a 2x2 matrix.
Maybe start your loop from b=2?
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Loops and Conditional Statements finden Sie in Help Center und File Exchange
Produkte
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!