scverse / scverse/anndata

zarr: support writing X as dense and reading as sparse (matches h5ad behavior)

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backend: zarr topic: io
Dominant language
Python
Stars
773
Forks
209
Avg merge
19h 41m
Merged PRs (30d)
32

Description

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Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the zarr read and write paths and the existing h5ad behavior they are intended to match. Determine the expected dense-to-sparse and sparse-to-dense semantics before identifying the relevant tests; done means the zarr behavior matches h5ad behavior in both directions.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
data
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
30/100

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