How do I using logical values to write 'NAN' to non-existing data?
6 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
I have a data set with non equal lengths
A = B =
H m lat H m lat
0 2 -90 0 1 -90
0 2 -89 0 1 -89
0 2 -88 0 1 -87
0 2 -87 0 1 -86
0 2 -86
I want to query using the lat of A to find missing lat in B and write 'NAN' in that row
so that the sizes become the same like this; I want to use this idea for a large data set
B=
0 2 -90
0 2 -89
NAN NAN NAN
0 2 -87
0 2 -86
0 commentaires
Réponse acceptée
Rik
le 8 Nov 2022
You can use ismember:
A=[ones(5,2).*[0 2] (-90:-86).'];
B=[ones(4,2).*[0 2] [-90;-89;-87;-86]];
new_B=nan(size(A));
[~,rows]=ismember(B(:,3),A(:,3));
new_B(rows,:)=B;
new_B
4 commentaires
Rik
le 8 Nov 2022
You have posted code, but you didn't explain how the output is different from what you want.
Note that this code will overwrite any values that occur multiple times in later elements of A.
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Logical 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!