Proposed roadmap/work prioritisation

[stephenworsley]

Themes of planned work

Planned improvements to iris-esmf-regrid can be grouped by a handfull of themes/goals which represent batches of work. Each of the following represents a batch of work which may happen between releases with an approximate prioritisation of the order given here. This plan is provisional and is open to suggestions or reprioritisation.

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General Maintainance (0th - ongoing)

Miscellaneuos issues such as #238 and #245 will be addressed as they are raised.

Remaining Regridder Unification Work (1st)

Complete work on #211.

Performance (2nd)

The main task with respect to performance is #246 which I believe would involve adding some major functionality in order to solve. Investigations into performance may also overlap with other performance related issues such as #234 and #213.

Documentation (3rd)

Flesh out the documentation started with #268. Documentation will also be continuously added to as functionality is added, but larger additions such as tutorials will require an additional focus.

Refactor From Iris Base Regridder (4th - tentative)

In anticipation of work done on SciTools/iris#4754, much of the regridder infrastructure should be able to be derived from Iris directly.

Xarray Integration (5th - tentative)

In anticipation of the Xarray-Iris bridge in SciTools/iris#4994, it will be possible to use iris-esmf-regrid on xarray data. It will be worth investigating and comparing differences with xesmf. If there is sufficient functionality added by iris-esmf-regrid and there is demand for it, API for handling xarray objects may be added. A minimal version of this would likely involve using the Xarray-Iris bridge, with a more direct implementation coming later. #308

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