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  • Handle NaNs when decoding times (failures on riscv64) · 6 ✖

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1265711007 https://github.com/pydata/xarray/issues/7096#issuecomment-1265711007 https://api.github.com/repos/pydata/xarray/issues/7096 IC_kwDOAMm_X85LcTef dcherian 2448579 2022-10-03T16:22:19Z 2022-10-03T16:22:19Z MEMBER

As in #7098

I think the real solution here is to explicitly handle NaNs during the decoding step. We do want these to be NaT in the output.

 
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   Handle NaNs when decoding times (failures on riscv64) 1389019400
1264693714 https://github.com/pydata/xarray/issues/7096#issuecomment-1264693714 https://api.github.com/repos/pydata/xarray/issues/7096 IC_kwDOAMm_X85LYbHS max-sixty 5635139 2022-10-02T17:27:33Z 2022-10-02T17:27:33Z MEMBER

I got the same result in riscv64. One thing I could guess is that the sign bit of NaN is not kept during conversions. Some more details could be found at

Thanks for trying that. Notably, that code doesn't have xarray in. So I'm keen to be part of the solution, but it doesn't look to be a problem with xarray code specifically. Let me know if that makes sense.

 
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   Handle NaNs when decoding times (failures on riscv64) 1389019400
1264535517 https://github.com/pydata/xarray/issues/7096#issuecomment-1264535517 https://api.github.com/repos/pydata/xarray/issues/7096 IC_kwDOAMm_X85LX0fd max-sixty 5635139 2022-10-02T02:47:22Z 2022-10-02T02:47:22Z MEMBER

Closing but please feel free to reopen

 
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   Handle NaNs when decoding times (failures on riscv64) 1389019400
1261481952 https://github.com/pydata/xarray/issues/7096#issuecomment-1261481952 https://api.github.com/repos/pydata/xarray/issues/7096 IC_kwDOAMm_X85LMK_g max-sixty 5635139 2022-09-28T21:26:09Z 2022-09-28T21:26:09Z MEMBER

I'm not sure what that has to do with xarray though? Does this give the same result?

import numpy as np import pandas as pd num_dates = np.asarray([0., np.nan]) flat_num_dates = num_dates.ravel() flat_num_dates_ns_int = (flat_num_dates * (int(1e9) * 60 * 60 * 24)).astype(np.int64) flat_num_dates_ns_int array([ 0, 9223372036854775807])

Please could you answer the question on whether pandas tests pass?

We're here helping as volunteers; we can only engage on issues if you reciprocate our good faith. Please could you answer this?

 
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   Handle NaNs when decoding times (failures on riscv64) 1389019400
1261412104 https://github.com/pydata/xarray/issues/7096#issuecomment-1261412104 https://api.github.com/repos/pydata/xarray/issues/7096 IC_kwDOAMm_X85LL58I max-sixty 5635139 2022-09-28T20:07:57Z 2022-09-28T20:07:57Z MEMBER

What are the bogus values?

Please could you answer the question on whether pandas tests pass?

 
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   Handle NaNs when decoding times (failures on riscv64) 1389019400
1261237590 https://github.com/pydata/xarray/issues/7096#issuecomment-1261237590 https://api.github.com/repos/pydata/xarray/issues/7096 IC_kwDOAMm_X85LLPVW max-sixty 5635139 2022-09-28T17:34:03Z 2022-09-28T17:34:03Z MEMBER

It looks lie many of these occur in pandas code — do pandas tests pass?

 
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   Handle NaNs when decoding times (failures on riscv64) 1389019400

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