- You have one NxN matrix A
- And a second 1xN vector B
- When an element of B is zero, you delete rows and columns from A with the same index
Delete and merge rows and columns based on values of other matrix
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
vimal r
am 21 Feb. 2020
Kommentiert: Guillaume
am 24 Feb. 2020
suppose consider a matrix of A = [1 2 3 4 ; 5 6 7 8 ; 9 1 2 3 ; 1 2 3 4] consider matrix B = [ 1 0 2 4 ]
so in matrix B value of 2 unit is 0 so i need to delete second row and second column in matrix A
final A1 matrix = [1 3 4 ; 9 2 3 ; 1 3 4]
0 Kommentare
Akzeptierte Antwort
Sindar
am 21 Feb. 2020
If I understand correctly:
A = [1 2 3 4 ; 5 6 7 8 ; 9 1 2 3 ; 1 2 3 4];
B = [ 1 0 2 4 ];
% find where B is nonzero
idx = find(B~=0);
% copy corresponding rows and columns of A to A1
A1=A(idx,idx);
7 Kommentare
Guillaume
am 24 Feb. 2020
I'm not sure which of your 3 questions the above refers to. You would be better off starting a new question for each topic.
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Number Theory 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!