Insert Zeros in every n-rows at the regular interval in 3rd dimension for an existing 3D Matrix.

2 visualizaciones (últimos 30 días)
Sunil Oulkar
Sunil Oulkar el 24 de Abr. de 2018
Editada: Matt J el 24 de Abr. de 2018
I have a m*n*t matrix. In 3rd dimension t, I want to insert m*n zeros at a particular interval. For example input
A(:,:,1) =
9 8 -8 -3
-3 -3 7 8
-3 -10 -1 8
10 5 -10 -10
4 7 11 13
A(:,:,2) =
14 9 7 5
3 5 2 11
15 12 15 8
7 10 9 5
14 4 15 13
A(:,:,3) =
14 17 17 15
13 21 21 19
15 21 17 17
14 21 18 13
17 16 13 17
A(:,:,4) =
14 21 15 19
15 12 20 11
15 5 4 9
7 6 15 16
3 2 17 10
result would be:
A(:,:,1) =
9 8 -8 -3
-3 -3 7 8
-3 -10 -1 8
10 5 -10 -10
4 7 11 13
A(:,:,2) =
14 9 7 5
3 5 2 11
15 12 15 8
7 10 9 5
14 4 15 13
A(:,:,3) =
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
A(:,:,4) =
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
A(:,:,5) =
14 17 17 15
13 21 21 19
15 21 17 17
14 21 18 13
17 16 13 17
A(:,:,6) =
14 21 15 19
15 12 20 11
15 5 4 9
7 6 15 16
3 2 17 10
A(:,:,7) =
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
A(:,:,8) =
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
Thanks!
  2 comentarios
Stephen23
Stephen23 el 24 de Abr. de 2018
@Sunil Oulkar: I am impressed: how did you manage to define an array with four rows in the first page, six rows in the second page, and five rows in the third and fourth pages?

Iniciar sesión para comentar.

Iniciar sesión para responder a esta pregunta.

Respuesta aceptada

Matt J
Matt J el 24 de Abr. de 2018
Editada: Matt J el 24 de Abr. de 2018
Assuming every page really is m x n (cf. Stephen's comment),
A=rand(3,4,6); %fake data
pattern=[1 1 1 0 0]; %insert zero every 4th and 5th page
[m,n,t]=size(A);
q=floor(t/nnz(pattern));
idx=repmat( reshape(pattern,1,1,[]) , 1,1,q)& true(m,n);
out=zeros(size(idx));
out(idx)=A(1:nnz(idx)),
results in
out(:,:,1) =
0.8147 0.9134 0.2785 0.9649
0.9058 0.6324 0.5469 0.1576
0.1270 0.0975 0.9575 0.9706
out(:,:,2) =
0.9572 0.1419 0.7922 0.0357
0.4854 0.4218 0.9595 0.8491
0.8003 0.9157 0.6557 0.9340
out(:,:,3) =
0.6787 0.3922 0.7060 0.0462
0.7577 0.6555 0.0318 0.0971
0.7431 0.1712 0.2769 0.8235
out(:,:,4) =
0 0 0 0
0 0 0 0
0 0 0 0
out(:,:,5) =
0 0 0 0
0 0 0 0
0 0 0 0
out(:,:,6) =
0.6948 0.0344 0.7655 0.4898
0.3171 0.4387 0.7952 0.4456
0.9502 0.3816 0.1869 0.6463
out(:,:,7) =
0.7094 0.6797 0.1190 0.3404
0.7547 0.6551 0.4984 0.5853
0.2760 0.1626 0.9597 0.2238
out(:,:,8) =
0.7513 0.6991 0.5472 0.2575
0.2551 0.8909 0.1386 0.8407
0.5060 0.9593 0.1493 0.2543
out(:,:,9) =
0 0 0 0
0 0 0 0
0 0 0 0
out(:,:,10) =
0 0 0 0
0 0 0 0
0 0 0 0

Más respuestas (0)

Categorías

Más información sobre Environment and Settings en Help Center y File Exchange.

Etiquetas

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by