Extracting a matrix by row and column from a large matrix
1 visualización (últimos 30 días)
Mostrar comentarios más antiguos
Tanmoyee Bhattacharya
el 21 de Mayo de 2019
Comentada: Adam Danz
el 21 de Mayo de 2019
I have a matrix like
1 1 1 2000
1 1 1 2000
1 1 1 2000
2 2 2 3000
2 2 2 3000
2 2 2 3000
3 3 3 5000
3 3 3 5000
3 3 3 5000
I have another matrix
2 2 2
2 2 2
2 2 2
I want a matrix from this matrix large matrix given above
2 2 2 3000
2 2 2 3000
2 2 2 3000
Can anyone help to extract the values through matlab.I am trying throuh ismember but not working.
2 comentarios
Bob Thompson
el 21 de Mayo de 2019
What kind of conditions are you hoping to meet, or do you literally just want any row which contains [2 2 2 3000]?
Adam Danz
el 21 de Mayo de 2019
Tanmoyee Bhattacharya answer moved here
I have another matrix
2 2 2
2 2 2
2 2 2
I have to extract the 4,5,6 row and four column from the large matrix by the given matrix
2 2 2 3000
2 2 2 3000
2 2 2 3000
Respuesta aceptada
Adam Danz
el 21 de Mayo de 2019
Editada: Adam Danz
el 21 de Mayo de 2019
I changed your example matrix a bit to make sure it ignores partial pattern matches.
m = [1 1 1 2000
1 1 1 2000
1 1 1 2000
2 2 2 3000
2 2 2 3000
2 2 2 3000
3 3 3 5000
3 3 3 5000
3 3 3 5000
2 2 2 6000
2 2 2 6000
9 9 9 7000];
s = [2 2 2
2 2 2
2 2 2];
[~, rowIdx] = intersect(m,s);
mSubset = m(rowIdx+(0:size(s,1)-1),:);
Result
mSubset =
2 2 2 3000
2 2 2 3000
2 2 2 3000
Note that if there is more than 1 match it will only return the first subset match.
0 comentarios
Más respuestas (0)
Ver también
Categorías
Más información sobre Logical en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!