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pagectranspose

Page-wise complex conjugate transpose

Since R2020b

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Syntax

Y = pagectranspose(X)

Description

Y = pagectranspose(X) applies the complex conjugate transpose to each page of N-D array X. Each page of the output Y(:,:,i) is the conjugate transpose of the corresponding page in X, as in X(:,:,i)'.

example

Examples

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Open Live Script

Create a 3-D complex array A, and then use pagectranspose to find the complex conjugate transpose of each page of the array.

r = repelem(1:3,3,1);
A = cat(3,r,2*r,3*r);
A = A + 1i
A = 
A(:,:,1) =

   1.0000 + 1.0000i   2.0000 + 1.0000i   3.0000 + 1.0000i
   1.0000 + 1.0000i   2.0000 + 1.0000i   3.0000 + 1.0000i
   1.0000 + 1.0000i   2.0000 + 1.0000i   3.0000 + 1.0000i


A(:,:,2) =

   2.0000 + 1.0000i   4.0000 + 1.0000i   6.0000 + 1.0000i
   2.0000 + 1.0000i   4.0000 + 1.0000i   6.0000 + 1.0000i
   2.0000 + 1.0000i   4.0000 + 1.0000i   6.0000 + 1.0000i


A(:,:,3) =

   3.0000 + 1.0000i   6.0000 + 1.0000i   9.0000 + 1.0000i
   3.0000 + 1.0000i   6.0000 + 1.0000i   9.0000 + 1.0000i
   3.0000 + 1.0000i   6.0000 + 1.0000i   9.0000 + 1.0000i


B = pagectranspose(A)
B = 
B(:,:,1) =

   1.0000 - 1.0000i   1.0000 - 1.0000i   1.0000 - 1.0000i
   2.0000 - 1.0000i   2.0000 - 1.0000i   2.0000 - 1.0000i
   3.0000 - 1.0000i   3.0000 - 1.0000i   3.0000 - 1.0000i


B(:,:,2) =

   2.0000 - 1.0000i   2.0000 - 1.0000i   2.0000 - 1.0000i
   4.0000 - 1.0000i   4.0000 - 1.0000i   4.0000 - 1.0000i
   6.0000 - 1.0000i   6.0000 - 1.0000i   6.0000 - 1.0000i


B(:,:,3) =

   3.0000 - 1.0000i   3.0000 - 1.0000i   3.0000 - 1.0000i
   6.0000 - 1.0000i   6.0000 - 1.0000i   6.0000 - 1.0000i
   9.0000 - 1.0000i   9.0000 - 1.0000i   9.0000 - 1.0000i

Input Arguments

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Input array, specified as a multidimensional array.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | logical | char | string | struct | cell | categorical | datetime | duration | calendarDuration
Complex Number Support: Yes

More About

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Array Pages

Page-wise functions like pagectranspose operate on 2-D matrices that have been arranged into a multidimensional array. For example, the elements in the third dimension of a 3-D array are commonly called pages because they stack on top of each other like pages in a book. Each page is a matrix that the function operates on.

3-D array with several matrices stacked on top of each other as pages in the third dimension

You can also assemble a collection of 2-D matrices into a higher dimensional array, like a 4-D or 5-D array, and in these cases pagectranspose still treats the fundamental unit of the array as a 2-D matrix that the function operates on, such as X(:,:,i,j,k,l).

The cat function is useful for assembling a collection of matrices into a multidimensional array, and the zeros function is useful for preallocating a multidimensional array.

Tips

  • The page-wise complex conjugate transpose is equivalent to permuting the first two dimensions of the array with permute(conj(X),[2 1 3:ndims(X)]).

Extended Capabilities

Version History

Introduced in R2020b

See Also

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