# Pairwise distances from a single column or vector

**URL:** https://discourse.julialang.org/t/pairwise-distances-from-a-single-column-or-vector/29415
**Category:** New to Julia
**Created:** [October 2, 2019, 3:44pm UTC](https://discourse.julialang.org/t/pairwise-distances-from-a-single-column-or-vector/29415 "2019-10-02T15:44:41Z")
**Posts on this page:** 1
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### Author: ![kristoffer.carlsson](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/kristoffer.carlsson/32/22_2.png) [@kristoffer.carlsson](https://discourse.julialang.org/u/kristoffer.carlsson)
#### Post date: [October 2, 2019, 4:13pm UTC](https://discourse.julialang.org/t/pairwise-distances-from-a-single-column-or-vector/29415/3 "2019-10-02T16:13:45Z")

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In Distances, a collection of points (even if the points are one dimensional) is given as a matrix, not a vector. So either create it as a matrix or use the adjoint operator `'` to give it an extra dimension.

```julia
julia> pairwise(Euclidean(), cc'; dims=2)
4×4 Array{Float64,2}:
 0.0 2.0 4.0 6.0
 2.0 0.0 2.0 4.0
 4.0 2.0 0.0 2.0
 6.0 4.0 2.0 0.0

```

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