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 2026-05-11 R Project ok
(0.471 s)
ok
(0.491 s)
ok
(0.469 s)
ok
(0.470 s)
ok
(0.472 s)
ok
(0.465 s)
pizzarr 2026-05-07 R Project ok
(0.575 s)
ok
(0.569 s)
ok
(0.530 s)
ok
(0.555 s)
ok
(0.560 s)
ok
(0.525 s)
zaro 2026-03-28 R Project ok
(0.567 s)
ok
(0.621 s)
ok
(0.620 s)
ok
(0.632 s)
ok
(0.614 s)
ok
(0.608 s)
zarr-java 2026-05-10 Java ok
(0.647 s)
ok
(0.562 s)
ok
(0.554 s)
ok
(0.565 s)
ok
(0.556 s)
ok
(0.548 s)
zarr-python 2026-04-19 Python ok
(0.320 s)
ok
(0.290 s)
ok
(0.287 s)
ok
(0.294 s)
ok
(0.292 s)
ok
(0.290 s)
zarrs 2026-05-10 Rust ok
(0.009 s)
ok
(0.028 s)
ok
(0.009 s)
ok
(0.030 s)
ok
(0.029 s)
ok
(0.010 s)