neu_vol.backends.webknossos¶

Read-only backend over one layer of a webknossos dataset.

Addressed by wk://DATASET/LAYER; addressing, credentials and the REST calls are in neu_vol/webknossos.py.

Presented zyx and origin-anchored, like DVID. webknossos serves voxels Fortran-ordered as (c, x, y, z), the same bytes as a C-ordered (z, y, x) array for one channel, so the reshape below is the axis flip. The shape runs from voxel 0 to the far corner of the layer’s bounding box; reads outside the box are zeros without a request.

Levels are the layer’s mags, finest first, each with its true voxel size (the dataset’s scale times the mag), never 2**level: mags may be anisotropic (2-2-1).

Attributes¶

`REQUEST_CHUNK`
`SLOW_REQUEST_S`
`TAG`

Classes¶

WebknossosBackend

Read-only (z, y, x) view over one mag of a webknossos layer.

Functions¶

geometry(info, layer) → dict

Everything about a layer's array, zyx: per-level shape, box, voxel size; dtype; kind.

Module Contents¶

class neu_vol.backends.webknossos.WebknossosBackend(spec: Mapping[str, Any])¶

Read-only (z, y, x) view over one mag of a webknossos layer.

classmethod open(spec: Mapping[str, Any]) → WebknossosBackend¶

read_region(region: neu_vol.backends.base.Region) → numpy.ndarray¶

to_spec() → dict[str, Any]¶

write_region(region: neu_vol.backends.base.Region, data: numpy.ndarray) → None¶

property chunks: tuple[int, ...]¶

property dtype: numpy.dtype¶

property shape: tuple[int, ...]¶

voxel_size¶

neu_vol.backends.webknossos.geometry(info: Mapping[str, Any], layer: str) → dict¶: Everything about a layer’s array, zyx: per-level shape, box, voxel size; dtype; kind.

neu_vol.backends.webknossos.REQUEST_CHUNK = (128, 128, 128)¶

neu_vol.backends.webknossos.SLOW_REQUEST_S = 30.0¶

neu_vol.backends.webknossos.TAG = 'webknossos'¶