# Findn(triu()) in Julia

**URL:** <https://discourse.julialang.org/t/findn-triu-in-julia/87167>\
**Category:** General Usage\
**Created:** [September 12, 2022, 10:42pm UTC](https://discourse.julialang.org/t/findn-triu-in-julia/87167 "2022-09-12T22:42:01Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![digital\_carver](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/digital_carver/32/33818_2.png) [@digital\_carver](https://discourse.julialang.org/u/digital_carver)\
**Post date:** [September 13, 2022, 6:47am UTC](https://discourse.julialang.org/t/findn-triu-in-julia/87167/8 "2022-09-13T06:47:36Z")

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For future readers:

> [@Findn() function not found in Julia](https://discourse.julialang.org/t/findn-function-not-found-in-julia/87175/3):
>
> It looks like findn(A) was a function in quite old versions of Julia, which was [deprecated in Julia 0.7](https://github.com/JuliaLang/julia/pull/25532) in favor of findall(!iszero, A). So, you should update your code to aij = findall(!iszero, triu(NA,1)) where aij is now an array of [CartesianIndex](https://docs.julialang.org/en/v1/base/arrays/#Base.IteratorsMD.CartesianIndex), essentially a kind of multi-component index for indexing multidimensional arrays.

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