I'm attempting to perform transformations on a table and subsequently convert it into a matrix.
X = DataFrame(rand(10, 2), :auto) # also tried a matrix table
Xcat = X |> TableOperations.transform(Dict(0=> x -> x)) |> Tables.matrix
However, I get the error
type Nothing has no field types
Stacktrace:
[1] getproperty(x::Nothing, f::Symbol)
@ Base [./Base.jl:38](https://file+.vscode-resource.vscode-cdn.net/Users/essam/Documents/GitHub/Imbalance.jl/Base.jl:38)
[2] matrix(table::TableOperations.Transforms{true, Tables.MatrixTable{Matrix{Float64}}, Dict{Int64, var"#15#16"}}; transpose::Bool)
@ Tables [~/.julia/packages/Tables/AcRIE/src/matrix.jl:87](https://file+.vscode-resource.vscode-cdn.net/Users/essam/Documents/GitHub/Imbalance.jl/~/.julia/packages/Tables/AcRIE/src/matrix.jl:87)
[3] matrix(table::TableOperations.Transforms{true, Tables.MatrixTable{Matrix{Float64}}, Dict{Int64, var"#15#16"}})
@ Tables [~/.julia/packages/Tables/AcRIE/src/matrix.jl:84](https://file+.vscode-resource.vscode-cdn.net/Users/essam/Documents/GitHub/Imbalance.jl/~/.julia/packages/Tables/AcRIE/src/matrix.jl:84)
[4] |>(x::TableOperations.Transforms{true, Tables.MatrixTable{Matrix{Float64}}, Dict{Int64, var"#15#16"}}, f::typeof(Tables.matrix))
@ Base [./operators.jl:911](https://file+.vscode-resource.vscode-cdn.net/Users/essam/Documents/GitHub/Imbalance.jl/operators.jl:911)
[5] top-level scope
The underlying reason as far as I understand is that the following test passes
Xcat = X |> TableOperations.transform(Dict(0=> x -> x))
@test isnothing(Tables.schema(Xcat))
Note that we don't run into the same issue if we use TableTransforms.select(...). Also, on the other hands, converting to a columntable works but I am not sure how efficient that operation is if I were to follow it with a matrix conversion.
I'm attempting to perform transformations on a table and subsequently convert it into a matrix.
However, I get the error
The underlying reason as far as I understand is that the following test passes
Note that we don't run into the same issue if we use
TableTransforms.select(...)
. Also, on the other hands, converting to acolumntable
works but I am not sure how efficient that operation is if I were to follow it with amatrix
conversion.