How can I interpolate rows in an array with a loop?
2 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Hi I would like to interpolate rows of an array with a loop. I wrote this code but it doesn't work, can you help me to solve this problem? Thanks
for i=1:size(A,1)
vq=0.01
b(i,:)=interp1((1:length(A{i,:})),A{i,:},vq)
end
1 commentaire
Réponses (1)
Yazan
le 18 Août 2021
if A is an array, then Matlab will throw an error, as you are using curly braces for indexing.
Below is a demo on how to user interp1
t0 = 1:1:10;
% create a matrix contaning data sampled at step = 1;
t = repmat(t0, [3,1]);
x = (1:3)';
A = x.*t;
% assume you need to sample at a step = 0.5
tq = t0(1):0.5:t0(end);
% interpolate every row linearly and save results in B
B = nan(size(A,1), length(tq));
for j=1:size(A,1)
B(j, :) = interp1(t0, A(j,:), tq);
end
% plot one row of A and B
figure,
plot(tq, B(1,:)); hold on
plot(t0, A(1,:), 's'); grid minor
legend({'Interpolated data', 'Original data'})
0 commentaires
Voir également
Catégories
En savoir plus sur Loops and Conditional Statements dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!