copying specific elements of an array to another.

60 visualizzazioni (ultimi 30 giorni)
Hi, I want to copy certain values from an array with a known size to an array with an unspesified size based on the critaria.
for i=1:length(y)
if abs(y(i))>0.001
y(i)=g(i);
end
end
So basically, I want to get all values in the array y that are greater than 0.001 to be copied into a seperate array g, but I'm struggling. Thanks in advance!

Risposta accettata

Stephen23
Stephen23 il 21 Ago 2021
Forget about loops, the simple and efficient MATLAB approach is to use logical indexing:
g = y(y>0.001)

Più risposte (1)

Awais Saeed
Awais Saeed il 21 Ago 2021
y = reshape(randn(3)/100,1,[]);
idx = 0;
for col = 1:1:size(y,2)
if (y(col) > 0.001)
idx = idx+1;
g(idx) = y(col); % store values > 0.001 in g
end
end
fprintf('y: ')
fprintf('%f ', y) % original data
fprintf('\ng: ')
fprintf('%f ', g) % values > 0.001

Categorie

Scopri di più su Matrices and Arrays in Help Center e File Exchange

Prodotti


Release

R2020a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by