How to turn an 1x1x3 array to a 1x3 vector?

67 visualizaciones (últimos 30 días)
Z Yerby
Z Yerby el 21 de Jun. de 2019
Comentada: Z Yerby el 24 de Jun. de 2019
Various manipulations I perform in my script create a 1x1x3 array which I then need to produce a dot product with a 1x3 vector. That's not playing together so I need to turn my 1x1x3 array into a 1x3 vector. I figure I can use vector=[array(1,1,1), array(1,1,2), array(1,1,3) ]; but I don't like how that looks and figure I could cut a line out if there was a function call that does the same thing. I assume there is one because this seems like something an existing function call would do but I cannot find it. Is there something I could use instead of vector=[array(1,1,1), array(1,1,2), array(1,1,3) ];?

Respuesta aceptada

madhan ravi
madhan ravi el 21 de Jun. de 2019
Editada: madhan ravi el 21 de Jun. de 2019
reshape(array,1,[]) % or squeeze() transposed
  1 comentario
Z Yerby
Z Yerby el 24 de Jun. de 2019
I ended up using squeeze and it worked for my purposes well. Thanks.

Iniciar sesión para comentar.

Más respuestas (1)

Bruce Elliott
Bruce Elliott el 21 de Jun. de 2019
Yes, there is an existing function to do that: permute().
Here's the help text:
% permute Permute array dimensions.
% B = permute(A,ORDER) rearranges the dimensions of A so that they are in
% the order specified by the vector ORDER. The resulting array has the
% same values as A but the order of the subscripts needed to access any
% particular element is rearranged as specified by ORDER. For an N-D
% array A, numel(ORDER)>=ndims(A). All the elements of ORDER must be
% unique.
%
% permute and IPERMUTE are a generalization of transpose (.')
% for N-D arrays.
%
% Example:
% a = rand(1,2,3,4);
% size(permute(a,[3 2 1 4])) % now it's 3-by-2-by-1-by-4.
%
% See also ipermute, circshift, size.

Categorías

Más información sobre Matrices and Arrays 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