coerce_increasing_time#
- echopype.qc.coerce_increasing_time(ds: Dataset, time_name: str = 'ping_time', win_len: int = 100) None #
Coerce a time coordinate so that it always flows forward. If coercion is necessary, the input ds will be directly modified.
- Parameters
- dsxr.Dataset
a dataset for which the time coordinate needs to be corrected
- time_namestr
name of the time coordinate to be corrected
- win_lenint
length of the local window before the reversed timestamp within which the median pinging interval is used to infer the next ping time
- Returns
- the input dataset but with specified time coordinate coerced to flow forward
Notes
This is to correct for problems sometimes observed in EK60/80 data where a time coordinate (
ping_time
ortime1
) would suddenly go backward for one ping, but then the rest of the pinging interval would remain undisturbed.