how to find maximum and minimum in a matrix
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
Maryam Hamrahi
am 4 Aug. 2016
Kommentiert: Maryam Hamrahi
am 4 Aug. 2016
I have matrix A with n rows and 2 columns. I would like to find rows which has the maximum and/or minimum of X and/or Y. Then, replace zero in these rows.
For instance: I have matrix A and I would like to produce matrix B.
A= [0.1 0.5
0.3 0.9
0.4 0.8
0.4 0.2
1 0.7
0.2 0.6
0.7 1
0.2 0.9]
Here, max. X=1 min. X=0.1 max. Y=1 min. Y=0.2
B= [0 0
0.3 0.9
0.4 0.8
0 0
0 0
0.2 0.6
0 0
0.2 0.9]
0 Kommentare
Akzeptierte Antwort
Thorsten
am 4 Aug. 2016
A= [0.1 0.5
0.3 0.9
0.4 0.8
0.4 0.2
1 0.7
0.2 0.6
0.7 1
0.2 0.9]
idx = A(:,1)==max(A(:,1)) | A(:,1)==min(A(:,1)) |...
A(:,2)==max(A(:,2)) | A(:,2)==min(A(:,2));
A(any(idx,2),:) = 0
Siehe auch
Kategorien
Mehr zu Logical 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!