# Create view for an Array of FieldVector
**URL:** https://discourse.julialang.org/t/create-view-for-an-array-of-fieldvector/35649
**Category:** General Usage
**Tags:** question
**Created:** [March 6, 2020, 4:32pm UTC](https://discourse.julialang.org/t/create-view-for-an-array-of-fieldvector/35649 "2020-03-06T16:32:51Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@CFBaptista](https://discourse.julialang.org/u/CFBaptista)
#### Post date: [March 6, 2020, 4:32pm UTC](https://discourse.julialang.org/t/create-view-for-an-array-of-fieldvector/35649/1 "2020-03-06T16:32:51Z")
Let’s say I have a struct that represents a point in 3D:
```julia
using StaticArrays
struct Point3D{T} <: FieldVector{3, T}
x::T
y::T
z::T
end
```
Then I generate some points like:
`points = rand(Point3D{Float64}, 10)`
If I am interested in the y-components only, I could for example do this:
```julia
pointsMatrix = reshape(reinterpret(Float64, points), 3, 10)
y = view(pointsMatrix, 2, :)
```
Is there a shorter / more direct way to do this (i.e. without reinterpret and reshape)?
---
### Author:  [@tbeason](https://discourse.julialang.org/u/tbeason)
#### Post date: [March 6, 2020, 4:49pm UTC](https://discourse.julialang.org/t/create-view-for-an-array-of-fieldvector/35649/2 "2020-03-06T16:49:59Z")
I am not sure how this fits into views or not but one maybe easier way is to use `StructArrays`
```julia
using StructArrays
S = StructArray(points)
S.y
```
They are pretty performant even if it isn’t a `view`
---
### Author:  [@CFBaptista](https://discourse.julialang.org/u/CFBaptista)
#### Post date: [March 6, 2020, 4:54pm UTC](https://discourse.julialang.org/t/create-view-for-an-array-of-fieldvector/35649/3 "2020-03-06T16:54:27Z")
Interesting, I am not familiar with StructArrays. I will have a look, but I do prefer a solution which doesn’t require an additional package.
---
### Author:  [@tbeason](https://discourse.julialang.org/u/tbeason)
#### Post date: [March 6, 2020, 5:00pm UTC](https://discourse.julialang.org/t/create-view-for-an-array-of-fieldvector/35649/4 "2020-03-06T17:00:08Z")
Regarding your original solution, I think you cannot get around the `reinterpret` but you probably don’t need to `reshape`.
---
### Author:  [@DNF](https://discourse.julialang.org/u/DNF)
#### Post date: [March 6, 2020, 5:14pm UTC](https://discourse.julialang.org/t/create-view-for-an-array-of-fieldvector/35649/5 "2020-03-06T17:14:21Z")
StructArrays will copy, though, it seems. In that case you might as well do
```julia
getindex.(points, 2)
```