ioos / ioos/xarray-subset-grid
Support for Global curvilinear grid models?
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- Dominant language
- Python
- Stars
- 9
- Forks
- 11
- Avg merge
- 3d 7h
- Merged PRs (30d)
- 4
Description
What should we add?
The trick with global models is that a subset could cross the dateline (or prime meridian, depending on the coordinate system) -- darn that round earth!
For instance, if a model is using 0-360 longitude coordinates, then a subset that crosses 0 degrees can be wonky.
But: Do we have any examples of a global model that uses a curvilinear grid (i.e. quads and 2D lat and lon) ?
If not then maybe we don't have to do anything, but it would good if it raised an error someone tried to subset a model across the 'backside" of its coordinates.
Reference
No response
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
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Research direction
Start by examining the repository's existing spatial subsetting behavior for global models using 0–360 longitude coordinates and curvilinear grids with 2D latitude and longitude. Determine whether a subset crossing the coordinate backside is supported; done means either handling that case correctly or raising a clear error, with a representative example if available.
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
- Quiet
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100