Built in function to sort the results of index in

General Usage
1

x =[2 3 4 5 6 7 8] z = [2 6 5] y= indexin(z,x)

is there a built in function to sort the results of indexin

2

The problem here is that you start with (1,n) matrices x and z:

julia> x =[2 3 4 5 6 7 8]
1Ă—7 Matrix{Int64}:
 2  3  4  5  6  7  8

which results in the end, that indexin returns 2-dimensional indices:

julia> y[2]
CartesianIndex(1, 5)

where order isn’t defined per default so you can’t use sort! on y.
If indexin would provide a “return sorted indices” parameter, the problem would be same that no order is defined.

So the question is: is it mandatory, that you are dealing with

1Ă—7 Matrix{Int64}

? Or tis this just some oversight? If you actually have vectors, it would be straight forward:

julia> z = [2, 6, 5]
3-element Vector{Int64}:
 2
 6
 5

julia> y= indexin(z,x)
3-element Vector{Union{Nothing, Int64}}:
 1
 5
 4

julia> y= sort(indexin(z,x))
3-element Vector{Union{Nothing, Int64}}:
 1
 4
 5

You can reshape your matrices with:

julia> x =[2 3 4 5 6 7 8]
1Ă—7 Matrix{Int64}:
 2  3  4  5  6  7  8

julia> x = reshape([2 3 4 5 6 7 8],length(x))
7-element Vector{Int64}:
 2
 3
 4
 5
 6
 7
 8
2 Likes
3

thanks!!! worked