Finding minimum within a set of rows below a certain point?
1 vue (au cours des 30 derniers jours)
Afficher commentaires plus anciens
I have a matrix X which has a different participant's data (Z) for each row across 10 time points (t) as the columns, I need to find the minimum amount of time and maximum amount of time where Z reaches 2 across the participants.
0 commentaires
Réponses (2)
CAM
le 5 Avr 2023
I suggest using the find command (with Z>=2) with row & column as outputs. Find the min and max column values and their associated row (subject). Using these row-column pairs, you can get the times.
Duncan Carlsmith
le 5 Avr 2023
Modifié(e) : Duncan Carlsmith
le 5 Avr 2023
% Make fake data, rows of random monotonically increasing values.
X=cumsum(rand(10),2)
% Make logical array for values satisfying the condition.
Y=X>2;
% Find the transition points
Z=diff(Y,1,2);
% Get the indices of the transition points.
[row,col]=find(Z==1);
%List the times of transitions.
[B,I]=sort(row);
Times=col(I)'
0 commentaires
Voir également
Catégories
En savoir plus sur Historical Contests dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!