How i can save a random value from a matrix in a variable,exluding values lower than 1?
1 visualizzazione (ultimi 30 giorni)
Mostra commenti meno recenti
Giannakis Stoukas
il 22 Apr 2015
Commentato: Image Analyst
il 22 Apr 2015
I have a matrix 100X100 and i want a command to insert in variable pnode a random value of this matrix but,i want the value to be bigger than 1.For example if i have the matrix A=[4 5 2 1; 8 3 1 0] my variable pnode,can take on of the values 4,5,2,8,3 randomly
0 Commenti
Risposta accettata
Image Analyst
il 22 Apr 2015
Try this:
% Generate sample data
A=[4 5 2 1; 8 3 1 0]
% Get column vector of all the elements where A > 0
A_No_Zeros = A(A > 0)
% Get a random index.
randomIndex = randi(length(A_No_Zeros), 1);
% Assign pnode the random value from A_No_Zeros.
pnode = A(randomIndex)
4 Commenti
Image Analyst
il 22 Apr 2015
Because once you ignore 0's and 1's in [4 5 2 1; 8 3 1 0] you are left with [4 5 2 8 3] and the minimum of that is 2. Not sure why you're surprised. However my code did not compute the minimum so that must be code you added.
Più risposte (0)
Vedere anche
Categorie
Scopri di più su Logical in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!