issue_comments: 1340939982

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https://github.com/pydata/xarray/issues/7363#issuecomment-1340939982 https://api.github.com/repos/pydata/xarray/issues/7363 1340939982 IC_kwDOAMm_X85P7R7O 8382834 2022-12-07T13:07:10Z 2022-12-07T13:07:10Z CONTRIBUTOR

Following the pointer by @keewis, I just did an:

extended_observations = previous_observations.pad(pad_width={"time": (0, needed_padding)}, mode="constant", constant_values=-999)

This runs nearly instantaneously and does exactly what I need. Many thanks to all for your help, and sorry for missing that there was the pad function. I close for now (the only question, is why the call to reindex is costly on my machine; I wonder if there may be some old version of some underlying software at stake).

 
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