Hi,
There is a package NamedArray that attempts to make it possible to work
with named indices and dimensions in native Julia arrays, just like you are
used to in R. There is no interface to Rif.jl, though. Would this be a
useful extension?
---david
On Sunday, October 26, 2014 11:01:51 PM UTC+1, lgautier wrote:
>
> Currently the way to do is to explicitly call the R-level setter:
>
> x = Rif.R("names<-")(x, Rif.cR("A", "B", "C"))
>
>
> However, as of today commit the C-level is exposed and a way that is
> looking a little more like native Julia.
> (I'll do a pull request so this is part of the released package soon).
>
> The unit-tests are for vectors, and should be explict:
> https://github.com/lgautier/Rif.jl/blob/master/test/vectors.jl#L57
>
> ```julia
> # The C API for R has specialized MACRO for names getrnames/setrnames
> # exposes it
> vi2 = Int32[1,2,3]
> rvi2 = Rif.RArray{Int32,1}(vi2)
> @test isequal(None, Rif.getrnames(rvi2))
> Rif.setrnames!(rvi2, Rif.RArray{ASCIIString,1}(ASCIIString["a", "b", "c"]))
> @test isequal("a", Rif.getrnames(rvi2)[1])
> @test isequal("b", Rif.getrnames(rvi2)[2])
> @test isequal("c", Rif.getrnames(rvi2)[3])
>
> # setAttr/getAttr will be equivalent
> vi2 = Int32[1,2,3]
> rvi2 = Rif.RArray{Int32,1}(vi2)
> @test_throws ErrorException Rif.getAttr(rvi2, "names")
> Rif.setAttr!(rvi2, "names",
> Rif.RArray{ASCIIString,1}(ASCIIString["a", "b", "c"]))
> @test isequal("a", Rif.getAttr(rvi2, "names")[1])
> @test isequal("a", Rif.getrnames(rvi2)[1])
> @test isequal("b", Rif.getAttr(rvi2, "names")[2])
> @test isequal("b", Rif.getrnames(rvi2)[2])
> @test isequal("c", Rif.getAttr(rvi2, "names")[3])
> @test isequal("c", Rif.getrnames(rvi2)[3])
> ```
>
> On Saturday, October 25, 2014 12:38:10 PM UTC-4, [email protected] wrote:
>>
>> In R, we can assign names for a variable as:
>> > x<-c(1,2,3)
>> > names(x)=c("A","B","C")
>> > x
>> A B C
>> 1 2 3
>>
>> In Julia, I can create a RArray by
>> x=Rif.cR([1,2,3])
>> But anyone know how to assign the "names" to this RArray variable in
>> Julia?
>>
>
