issue_comments: 1102801329

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https://github.com/pydata/xarray/issues/6493#issuecomment-1102801329 https://api.github.com/repos/pydata/xarray/issues/6493 1102801329 IC_kwDOAMm_X85Bu2mx 35968931 2022-04-19T15:37:11Z 2022-04-19T15:37:11Z MEMBER

I am still worried about the metrics concept introduced by xgcm. I think this should be discussed over xgcm's repo.

Please do raise an issue there!

We don't need stagged grid point and metrics, as in xgcm, but centered difference (a[i+1]-a[i-1]) will be good enough for A grid.

The new "grid ufuncs" functionality in xGCM (hopefully being released this week) allows you to write grid-aware functions that can do centered operations exactly like this. e.g. see here

https://github.com/xgcm/xgcm/blob/cb7feccb9e4331e71da6f034cbee13f43c3de76d/xgcm/test/test_grid_ufunc.py#L614

This is simpler and do not make heavy dependence of the third-party package like xgcm.

I do sympathise with this though.

But some designs in xgcm also inspire me to make things much natural.

If you tell us exactly what it is you're trying to do then there might be a neat solution.

cc @jbusecke 

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