Comparing matrices with different dimensions
2 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Mahi Nazir
le 27 Sep 2013
Réponse apportée : dpb
le 27 Sep 2013
I have a matrix [row, col, vector] with a large number of entries for row, col and vector.
I have another matrix [x, y] with few entries.
I want to derive a matrix [xr, yc, zv] for all the values for which (x==row and y==col) and zv should be the corresponding value of 'vector' for which (x=row and y=col)
e.g:
[row col vector]= 2 2 4;
3 2 6;
7 1 8;
5 2 3;
8 1 7;
[x y]= 3 2;
8 1
then, [xr yc zv] should equal = 3 2 6;
8 1 7
Your help will be greatly appreciated. Thanks!
0 commentaires
Réponse acceptée
Image Analyst
le 27 Sep 2013
Use ismember() with the rows option:
m= [2 2 4;
3 2 6;
7 1 8;
5 2 3;
8 1 7]
m2= [3 2;
8 1
7 3]
matches = ismember(m(:,1:2), m2, 'rows')
out = m(matches,:)
Plus de réponses (1)
dpb
le 27 Sep 2013
Since your values are in the first two columns, it's fairly easily written...
>> res=a(ismember(a(:,1:2),v,'rows'),:)
res =
3 2 6
8 1 7
>>
0 commentaires
Voir également
Catégories
En savoir plus sur Data Type Conversion 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!