Hi, On Sunday, November 9, 2014 5:10:19 PM UTC+1, Milan Bouchet-Valat wrot
> Actually I didn't do it because NamedArrays.jl didn't work well on 0.3 > when I first worked on the package. Now I see the tests are still failing. > Do you know what is needed to make them work? > > What is exactly not working, could you maybe file an issue? Travis tells me all is fine. ---david > Another point is that I think this deserves going into StatsBase, but > before that we need everybody to agree on a design for NamedArrays. > > Regards > > > On Sunday, November 9, 2014 4:26:45 PM UTC+1, Milan Bouchet-Valat wrote: > > Le jeudi 06 novembre 2014 à 11:17 -0800, Conrad Stack a écrit : > > I was also looking for a function like this, but could not find one in > docs.julialang.org. I was doing this (v0.4.0-dev), for anyone who is > interested: > > > example = rand(1:10,100) > uexample = sort(unique(example)) > counts = map(x->count(y->x==y,example),uexample) > > > It's pretty ugly, so thanks, Johan, for pointing out the > StatsBase->countmap > > I've also put together a small package precisely aimed at offering an > equivalent of R's table(): > https://github.com/nalimilan/ <https://github.com/nalimilan/Tables.jl> > Tables.jl <https://github.com/nalimilan/Tables.jl> > > But there's a more general issue about how to handle arrays with dimension > names in Julia. NamedArrays.jl (which is used in my package) attempts to > tackle this issue, but I don't think we've reached a consensus yet about > the best solution. > > > Regards > > > > > On Sunday, August 17, 2014 9:56:29 AM UTC-4, Johan Sigfrids wrote: > > I think countmap comes closest to giving you what you want: > > using StatsBase > data = sample(["a", "b", "c"], 20) > countmap(data) > > > Dict{ASCIIString,Int64} with 3 entries: > "c" => 3 > "b" => 10 > "a" => 7 > > > On Sunday, August 17, 2014 4:45:21 PM UTC+3, Florian Oswald wrote: > > Hi > > > I'm looking for the best way to count how many times a certain value x_i > appears in vector x, where x could be integers, floats, strings. In R I > would do table(x). I found StatsBase.counts(x,k) but I'm a bit confused by > k (where k goes into 1:k, i.e. the vector is scanned to find how many > elements locate at each point of 1:k). most of the times I don't know k, > and in fact I would do table(x) just to find out what k was. Apart from > that, I don't think I could use this with strings, as I can't construct a > range object from strings. > > > I'm wondering whether a method StatsBase.counts(x::Vector) just returning > the frequency of each element appearing would be useful. > > > The same applies to Base.hist if I understand correctly. I just don't want > to have to specify the edges of bins. > > > > > > > >
