How to replace elements if it is true
1 vue (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Hi,
I have below cell array matrices:
A={'DF','3';'FR','4';'RR','2';'RT','4'};
B={'AB','1';'BC','3';'CD','5';'DF','7';'FR','9';'RT','8';'TA','1';'AR','3';'TY','4'};
if any of the row in B is member in A, the replace the corresponding second column element by seconf column element of A. I use the below code,
close all
clear all
clc
A={'DF','3';'FR','4';'RR','2';'RT','4'};
B={'AB','1';'BC','3';'CD','5';'DF','7';'FR','9';'RT','8';'TA','1';'AR','3';'TY','4'};
indx=ismember(B(:,1),A(:,1));
B(indx,2)=A(indx,2);
but it give the error:
??? Index exceeds matrix dimensions.
Error in ==> ScoreCompare at 7 B(indx,2)=A(indx,2);
My desired output should be:
AB 1
BC 3
CD 5
DF 3
FR 4
RT 4
TA 1
AR 3
TY 4
Many thanks in advance.
0 commentaires
Réponses (1)
Jan
le 18 Avr 2017
Modifié(e) : Jan
le 24 Avr 2017
In B(indx,2)=A(indx,2) the index "indx" would concern both arrays. You need both outputs of ismember instead:
[LiB, LocA] = ismember(B(:,1), A(:,1));
B(LiB, 2) = A(LocA, 2); % [EDITED] Does not work for missing B
[EDITED]:
B(LiB, 2) = A(LocA(LiB), 2);
3 commentaires
Voir également
Catégories
En savoir plus sur Matrices and Arrays 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!