I'm not saying it's there now, just that it's an almost-trivial addition.
Perhaps the type would look something like
View{T,N,P,(UnitRange{Int64}, :Broadcast, UnitRange{Int64})}
to make a 3d broadcasting array out of a 2d object, with broadcasting on the
middle axis.
--Tim
On Tuesday, August 26, 2014 09:56:22 AM Neal Becker wrote:
> I guess I'm not quite clear on whether ArrayViews, or ArrayViewsAPL would
> support synthetic broadcasting. IIUC, what's needed is to introduce a new
> dimension, with stride set to 0.
>
> Tim Holy wrote:
> > That's kind of an "inverse slice." Neat.
> >
> > This should be easy to do with
> > https://github.com/timholy/ArrayViewsAPL.jl,
> > and much easier to use than having to think about strides explicitly. We
> > just need to finish stagedfunctions.
> >
> > --Tim
> >
> > On Tuesday, August 26, 2014 08:45:38 AM Neal Becker wrote:
> >> I was thinking particularly of the case of a function that does not
> >> broadcast it's arguments. stride tricks could be used to cause
> >> broadcasting (maybe not that efficiently).
> >>
> >> http://stackoverflow.com/questions/25486506/julia-broadcasting-equivalent
> >> -of -numpy-newaxis?noredirect=1#comment39778672_25486506
> >>
> >> Tobias Knopp wrote:
> >> > The ArrayView package will give similar though not equivalent
> >> > possibilities. See also https://github.com/JuliaLang/julia/pull/5556
> >> > and https://github.com/JuliaLang/julia/issues/5932
> >> > I think there is also a transpose type that would allow to reverse
> >> > strides.
> >> >
> >> > Cheers,
> >> >
> >> > Tobi
> >> >
> >> > Am Dienstag, 26. August 2014 14:26:46 UTC+2 schrieb Neal Becker:
> >> >> In numpy, array contents can be re-interpreted without copying. The
> >> >> indexing of
> >> >> an array is defined by it's strides, and by altering the strides we
> >> >> can
> >> >> get
> >> >> different views.
> >> >>
> >> >>
> >> >> http://nbviewer.ipython.org/github/ipython-books/cookbook-code/blob/ma
> >> >> ste
> >> >> r/notebooks/chapter04_optimization/06_stride_tricks.ipynb
> >> >>
> >> >> Does julia have a similar facility?
> >> >>
> >> >> --
> >> >> -- Those who don't understand recursion are doomed to repeat it
