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Interleave Vectors or Matrices

version 1.1.0.0 (5.48 KB) by Steven Shimizu
Interleaves rows or columns of any number of vectors or matrices

5 Downloads

Updated 05 Mar 2014

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A robust interleave function that interleaves any number of vectors or matrices by row or column. If the input are just vectors, there is no need to specify orientation. Extra elements/rows/columns are appended on the end of the output matrix. Not the most efficient algorithm, but it works well for most operations.

Examples:

1) Interleaving rows of matrices

A = [1 2; 3 4] B = [5 6;7 8]

C = interleave2(A, B, 'row')
C = [1 2
5 6
3 4
7 8]

2) Interleaving columns of matrices

C = interleave2(A, B, 'col')
C = [1 5 2 6
3 7 4 8]

3) Interleaving vectors (Note: input vectors need not be same orientation)

A = [1 2 3 4] B = [5 6 7 8 9]'
C = interleave2(A, B)
C = [1 5 2 6 3 7 4 8 9]'

4) Interleaving >2 matrices

A = [1 2;3 4] B = [5 6;7 8]
C = [9 10;11 12] D = [13 14;15 16]

E = interleave2(A, B, C, D, 'col')
E = [1 5 9 13 2 6 10 14
3 7 11 15 4 8 12 16]

5) Interleaving columns of 2 matrices with unequal columns

A = [1 2;3 4]
B = [5 6 7 8;9 10 11 12]
C = interleave2(A, B, 'col')
C = [1 5 2 6 7 8
3 9 4 10 11 12]

6) Interleaving >2 vectors of unequal lengths

A = [1 2 3 4] B = [5 6 7]
C = [8 9 10 11 12 13]
D = interleave2(A, B, C)
D = [1 5 8 2 6 9 3 7 10 4 11 12 13]

Cite As

Steven Shimizu (2020). Interleave Vectors or Matrices (https://www.mathworks.com/matlabcentral/fileexchange/45757-interleave-vectors-or-matrices), MATLAB Central File Exchange. Retrieved .

Comments and Ratings (9)

Very useful script. Thank you! it would have been great if it was also possible to de-interleave with the same function when the matrix length is unequal to the number of matrices. I hope you can fix this too! cheers!

Perfect and very useful.

Juji Li

Awesome - I now don't need to faff around with reshape! Bad news for my brain, but good news for my vectors :)

Observer

Amna ghani

Works like a charm

Thank you

pm4

Worked just as described, thank you!

Updates

1.1.0.0

Modified description

MATLAB Release Compatibility
Created with R2012a
Compatible with any release
Platform Compatibility
Windows macOS Linux
Acknowledgements

Inspired by: interleave