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Versions: NGFF column states the RFC-5 draft instead of claiming compliance - #75

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jangleixner/ngff-column-not-compliant

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@jan-glx

@jan-glx jan-glx commented Nov 4, 2026

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Follow-up to Luca's request on Zulip (#Spatial Innovation Team > spatialdata-spec).

The compatibility matrix's NGFF column read "0.5 ("0.5-dev-spatialdata")" etc., which reads as a compliance claim and clipped on the site. No storage format so far is compliant with a released OME-Zarr version: the coordinate transformations follow the RFC-5 draft (already stated in the "Divergence from NGFF" boxes, including for the plain "0.4" of raster 0.1).

  • NGFF column: 0.5 + RFC-5 draft / 0.4 + RFC-5 draft, plus a note under the table: the aim is OME-Zarr 0.6 (links the upcoming-version section); the recorded version strings stay in the element versions table (new element-versions label).
  • Column `spatialdata` writes → Written by `spatialdata`; the 0.3 cell is shortened to "0.4.0 – 0.5.x; ≥ 0.6.0 on request" (the container detail is in the paragraph below the table).

…sion it claims

No storage format so far is compliant with a released OME-Zarr version: the
coordinate transformations follow the RFC-5 draft. The column now reads
"0.x + RFC-5 draft", with a note on the 0.6 aim; the recorded version strings
stay in the element versions table. Also rename "`spatialdata` writes" to
"Written by `spatialdata`" and shorten the 0.3 cell.
@jan-glx

jan-glx commented Nov 4, 2026 •

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Alternative: #76 is a minimal version that only changes the NGFF column (header "NGFF version string", cells = the recorded strings, no note). Pick one.

@jan-glx

jan-glx commented Nov 5, 2026

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Superseded by #76 (NGFF column) and a separate PR for the header / 0.3 cell.

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