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OSOceanAcoustics / echopype

Enabling interoperability and scalability in ocean sonar data analysis
https://echopype.readthedocs.io/
Apache License 2.0
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compute_Sv return 'NAN' #1176

Closed wangtaojiezi closed 5 months ago

wangtaojiezi commented 11 months ago

General description of problem I am using a 'compute_Sv',there is' nan 'in the 'Sv' and echo_range, and the position where nan exists does not correspond. Is this correct? What is the meaning of this' nan' and how to handle 'nan'.

Computing environment Echopype version: 0.8.1 Operating system:Windows 11

### Minimum example The following code reproduces the issue I encountered:

range_kwargs1 = {"waveform_mode": "BB", "encode_mode": "complex"}
ds_Sv = ep.calibrate.compute_Sv(ed, **range_kwargs1).compute()
print(ds_Sv)

outputdata The data samples are as follows： sv：[NaN, NaN, -190.77, -47.6, -41.16,NaN, NaN, NaN, NaN,] echo_range: [0.01, 0.02, 0.03, 0.04, 0.05, 0.06,NaN, NaN, [NaN]

[Uploading outputdata.txt…]()

I am currently confused and hope to receive your help

leewujung commented 10 months ago

@wangtaojiezi: Does your data only have 1 channel? Could you do a printout of ds_Sv["Sv"] and echo_range in a gist or text file or something similar that shows the dimension and length of these variables with some data snippet? It's hard to determine what you showed without more information. Thanks.

leewujung commented 5 months ago

This may be of the same source as #1260? Not sure, but since there's no further info here and it's been a few months, I'll close this now. @wangtaojiezi we'll ping you once #1260 is addressed. If you continue to run into problem afterwards feel free to raise a new issue.