# \#intialization

**URL:** https://discourse.julialang.org/tag/intialization/1100.md

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## [Appending a matrix to a vector of matrices](https://discourse.julialang.org/t/appending-a-matrix-to-a-vector-of-matrices/85191)

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**Author:** [@Gus\_Hart](https://discourse.julialang.org/u/Gus_Hart)\
**Replies:** 10\
**Last updated:** [August 2, 2022, 11:30pm UTC](https://discourse.julialang.org/t/appending-a-matrix-to-a-vector-of-matrices/85191 "2022-08-02T23:30:43Z")

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I have a long list (vector) of matrices. They are size 3xn where n is typically 1 \< n \< 7. My long list typically varies between 100K and 1 million. My task is to reduce this list using a rather complicated and expensive…