# Get vector of vectors of indice of appearances for every unique element of an array

**URL:** <https://discourse.julialang.org/t/get-vector-of-vectors-of-indice-of-appearances-for-every-unique-element-of-an-array/87671>\
**Category:** Performance\
**Tags:** question, arrays\
**Created:** [September 22, 2022, 8:31pm UTC](https://discourse.julialang.org/t/get-vector-of-vectors-of-indice-of-appearances-for-every-unique-element-of-an-array/87671 "2022-09-22T20:31:28Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![stevengj](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/stevengj/32/71_2.png) [@stevengj](https://discourse.julialang.org/u/stevengj)\
**Post date:** [September 22, 2022, 8:47pm UTC](https://discourse.julialang.org/t/get-vector-of-vectors-of-indice-of-appearances-for-every-unique-element-of-an-array/87671/2 "2022-09-22T20:47:14Z")

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See: [Is there a function similar to numpy unique with inverse? - #6 by stevengj](https://discourse.julialang.org/t/is-there-a-function-similar-to-numpy-unique-with-inverse/80949/6)

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