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Parametrize index margin around gap detection segment

basic_buy_bot
Tyler Goodlet 2023-06-08 18:46:14 -04:00
parent a575e67fab
commit c1201c164c
1 changed files with 21 additions and 4 deletions
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25
piker/data/_timeseries.py
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@ -194,16 +194,33 @@ def slice_from_time(
return read_slc return read_slc
def detect_null_time_gap(shm: ShmArray) -> tuple[float, float] | None: def detect_null_time_gap(
# detect if there are any zero-epoch stamped rows shm: ShmArray,
imargin: int = 1,
) -> tuple[float, float] | None:
'''
Detect if there are any zero-epoch stamped rows in
the presumed 'time' field-column.
Filter to the gap and return a surrounding index range.
NOTE: for now presumes only ONE gap XD
'''
zero_pred: np.ndarray = shm.array['time'] == 0 zero_pred: np.ndarray = shm.array['time'] == 0
zero_t: np.ndarray = shm.array[zero_pred] zero_t: np.ndarray = shm.array[zero_pred]
if zero_t.size: if zero_t.size:
istart, iend = zero_t['index'][[0, -1]] istart, iend = zero_t['index'][[0, -1]]
start, end = shm._array['time'][ start, end = shm._array['time'][
[istart - 2, iend + 2] [istart - imargin, iend + imargin]
] ]
return istart - 2, start, end, iend + 2 return (
istart - imargin,
start,
end,
iend + imargin,
)
return None return None