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  • ValueError: buffer source array is read-only with apply_ufunc · 5 ✖
id html_url issue_url node_id user created_at updated_at ▲ author_association body reactions performed_via_github_app issue
1101029273 https://github.com/pydata/xarray/issues/3715#issuecomment-1101029273 https://api.github.com/repos/pydata/xarray/issues/3715 IC_kwDOAMm_X85BoF-Z max-sixty 5635139 2022-04-18T02:18:47Z 2022-04-18T02:18:47Z MEMBER

I think we can close as upstream, please reopen if that's not the case

 
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   ValueError: buffer source array is read-only with apply_ufunc 553672182
1101015175 https://github.com/pydata/xarray/issues/3715#issuecomment-1101015175 https://api.github.com/repos/pydata/xarray/issues/3715 IC_kwDOAMm_X85BoCiH stale[bot] 26384082 2022-04-18T01:43:45Z 2022-04-18T01:43:45Z NONE

In order to maintain a list of currently relevant issues, we mark issues as stale after a period of inactivity

If this issue remains relevant, please comment here or remove the stale label; otherwise it will be marked as closed automatically

 
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   ValueError: buffer source array is read-only with apply_ufunc 553672182
680398920 https://github.com/pydata/xarray/issues/3715#issuecomment-680398920 https://api.github.com/repos/pydata/xarray/issues/3715 MDEyOklzc3VlQ29tbWVudDY4MDM5ODkyMA== max-sixty 5635139 2020-08-26T01:04:06Z 2020-08-26T01:04:06Z MEMBER

@DancingQuanta someone pointed me towards this issue — did you happen to make any progress on this / post an issue on scipy?

As per your issue, while this isn't an ideal workaround, this does work:

```python

def process_peaks(arr): # Apply find_peaks arr = arr.copy() <- # added peaks, _ = find_peaks(arr, prominence=1) return peaks ```

 
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   ValueError: buffer source array is read-only with apply_ufunc 553672182
577589279 https://github.com/pydata/xarray/issues/3715#issuecomment-577589279 https://api.github.com/repos/pydata/xarray/issues/3715 MDEyOklzc3VlQ29tbWVudDU3NzU4OTI3OQ== DancingQuanta 8419157 2020-01-23T09:04:19Z 2020-01-23T09:04:19Z NONE

I could raise an issue on scipy's end and see what they says.

 
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   ValueError: buffer source array is read-only with apply_ufunc 553672182
577510403 https://github.com/pydata/xarray/issues/3715#issuecomment-577510403 https://api.github.com/repos/pydata/xarray/issues/3715 MDEyOklzc3VlQ29tbWVudDU3NzUxMDQwMw== shoyer 1217238 2020-01-23T05:22:58Z 2020-01-23T05:22:58Z MEMBER

I think the source of the problem here is actually the call to broadcast_like(), which makes a readonly view.

It is pretty common for Cython functions to (incorrectly) insist on being able to write to arrays, even if they don’t actually modify their inputs. Most likely scipy could be updated to fix this issues.

 
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   ValueError: buffer source array is read-only with apply_ufunc 553672182

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