NCAR / NCAR/wrf-python

Improve xarray support

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enhancement
Dominant language
Python
Stars
498
Forks
178
PR merge metrics
No merged PRs in 30d

Description

Current support for xarray is fairly primitive. Some features that would be nice are:

  • Add support for using xarray.Dataset directly instead of extracting the NetCDF object.
    • Being able to subset the Dataset's data prior to reading so the entire array isn't used.
    • Some of this may be better handled using input iterables classes as wrappers.
    • See also issue #6
  • Add multidimensional indexing support by using the latlon_to_xy routines.
  • Make isel, sel, and other indexing features work correctly.

This list will be updated as needed.

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 reviewing the existing xarray support and issue #6, then trace the latlon_to_xy routines and current indexing behavior. The work is done when Dataset inputs, pre-read subsetting, multidimensional indexing, and isel/sel behavior are supported correctly.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
data
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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