I wan to create a 3x3 matrix and this matrix needs to contains first 3 raws and last 3 columns of other matrix which is unknown.
2 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
I wan to create a 3x3 matrix and this matrix needs to contains first 3 raws and last 3 columns of other matrix which is unknown. How can i do that ? Can you help me about it ?
0 comentarios
Respuestas (1)
Mitchell Thurston
el 13 de Oct. de 2021
With the original larger matrix you want the rows and columns from being "A" and the resulting 3x3 being "B",
A = B(1:3, ... % to specify first 3 rows
end-2:end); % to specify last 3 columns
Since I'm assuming you want this to be a function, and B could be anything (including a matrix less than 3x3, it would be a good idea to have an error check.
function A = first3last3(B)
m,n = size(B);
if (m<3) || (n<3)
error('Input matrix is improper size');
end
A = B(1:3, n-2:n);
end
0 comentarios
Ver también
Categorías
Más información sobre Matrices and Arrays en Help Center y File Exchange.
Productos
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!