How to fill a 3D array with values calculated in a loop?
8 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
Niky Taylor
el 23 de Oct. de 2017
Comentada: Cedric
el 30 de Oct. de 2017
I want to fill a 3D array with values calculated in a loop. Each iteration of the loop generates a single new value which I want to put in an array, so that I end up with a 2D array of all the new values that correspond to their parent value in the old matrix.
D = rand(3,3,4);
d = rand(2,4);
for i=1:3;
for j=1:3;
E = [D(i,j,1);D(i,j,2);D(i,j,3);D(i,j,4)];
F = d*E;
end
end
How do I print each iteration of 'F' into a new array? F is a 2x1 matrix, so I'd like to have one 3x3 array with the F(1,1) values and a second 3x3 array with the F(2,1) values. I'd like to have the arrays separate, I know I can always concatenate them if I need all the data in one place.
I'm also open to suggestions if you think I've gone about this poorly. Thanks in advance.
0 comentarios
Respuesta aceptada
Cedric
el 23 de Oct. de 2017
Editada: Cedric
el 23 de Oct. de 2017
This would be one way to do it if you have MATLAB R2016b or newer:
A = sum( D .* permute( d(1,:), [1, 3, 2] ), 3 ) ; % First array.
B = sum( D .* permute( d(2,:), [1, 3, 2] ), 3 ) ; % Second array.
1 comentario
Cedric
el 30 de Oct. de 2017
If this is working for you, please [Accept] the answer. If not, I am happy to discuss what is not working.
Más respuestas (0)
Ver también
Categorías
Más información sobre Loops and Conditional Statements 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!