combining z5 headers with xtensor-r

@constantinpape

I have tried reading data directly into rarrays (https://github.com/gdkrmr/zarr-R/blob/31c4176bcba8b841080d56abed231d2c8f773cd3/src/xtensor-write.cpp#L156) but this failed when reading in entire chunks. Reading into an xarray and then copying into an rarray works fine.

My question is if this is a bug or if I tried to use rarrays in a way I was not supposed to.

The related issue can be found here: gdkrmr/zarr-R#12

hmmm ... do you know how memory allocation is performed when reading these arrays? could be that there lies the problem with xtensor-r.

hmm. the other potential problem could be that R uses col-major and xtensor by default uses row-major? Not sure about zarr.

I think zarr can be both, but z5 currently only supports row major. If this is a problem, why does

transform(xarray.begin(), xarray.end(), rarray.begin(), [](auto x){ return x; });

work fine?

Navigation Menu