Zarr features supported by different implementations

Test Results Across Implementations
implementation last run language read int64 - v2 read int32 - v2 read int32 - v3 read float64 - v2 read float32 - v2 read bool - v2
Rarr 2026-03-21 R Project ok
(0.516 s)
ok
(0.505 s)
ok
(0.512 s)
ok
(0.519 s)
ok
(0.518 s)
ok
(0.518 s)
pizzarr 2026-03-16 R Project ok
(0.622 s)
ok
(0.588 s)
ok
(0.562 s)
ok
(0.580 s)
ok
(0.581 s)
ok
(0.556 s)
zarr-python 2026-03-22 Python ok
(0.325 s)
ok
(0.300 s)
ok
(0.296 s)
ok
(0.299 s)
ok
(0.304 s)
ok
(0.295 s)
zarrs 2026-03-22 Rust ok
(0.011 s)
ok
(0.029 s)
ok
(0.010 s)
ok
(0.045 s)
ok
(0.044 s)
ok
(0.009 s)