How to make an endless calculated matrix?
4 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
For example I have matrix A(3,2) = [2 3; 4 5; 6 7] and matrix B(3,1) = [A(1,1)+A(1,2); A(2,1)+A(2,2); A(3,1)+A(3,2)]
Now, maybe I want to add 2 more rows in matrix A and I want B calculate those element without me writing A(4,1)+A(4,2) etc, automatically. For matrix A of ,,n" rows and 2 columns I want to make a B matrix of ,,n" rows and 1 column, B depending on A. Is there some set of commands to make this possible?
EDIT: What I really need is to know how to build matrix B ,which depends on A, using functions.
For example, we got: -*matrix* A(3,2)*= [2 3; 4 5; 6 7] -a function to calculate: sqrt(A(1,1)+A(1,2))/2 -*matrix* B(3,1)= [Function(A(1,1),A(1,2)); Function(A(2,1),A(2,2)); Function(A(3,1),A(3,2))] Now how can I build matrix B regardless of rows that matrix A have, without my input for every row in matrix B *Note: English is not my first language and I may not be very explicit.
Thank you!
0 Kommentare
Akzeptierte Antwort
Andrei Bobrov
am 13 Apr. 2013
Bearbeitet: Andrei Bobrov
am 13 Apr. 2013
A = [2 3; 4 5; 6 7];
B = sum(A,2);
A(end+1,:) = [4 9]
B(end+1,:) = sum(A(end+1,:),2);
ADD
fun = @(x)sqrt(sum(x,2))/2;
B= fun(A);
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Matrices and Arrays 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!