Sparse block diagonal concatenation
Updated 2 May 2020
SPBLKDIAG Block diagonal concatenation of matrix input arguments, with sparse output.
Y = SPBLKDIAG(A,B,...) produces SPARSE(BLKDIAG(A, B, ..)) efficiently, where A, B, ... are matrices of class double (real or complex).
Basically, this is a thin wrapper around MATLAB's own BLKDIAG, since it already supports sparse output. However:
- BLKDIAG does not mention sparse support in its documentation; nor the fact that it is supported, nor how to access the functionality.
- BLKDIAG's name is inconsistent with the function names for any of MATLAB's other sparse functions (SPEYE, SPDIAGS, etc.)
Therefore, until The MathWorks fixes this, this function provides a better documented and more intuitively named alternative to BLKDIAG.
Rody Oldenhuis (2023). Sparse block diagonal concatenation (https://github.com/rodyo/FEX-spblkdiag/releases/tag/v1.2), GitHub. Retrieved .
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See release notes for this release on GitHub: https://github.com/rodyo/FEX-spblkdiag/releases/tag/v1.2
fixed typos in the description.