question about the *.nc files

[seismolab-uct]

Hi I have a few basic questions about the *.nc files generated in the different steps. I'm trying to export the results of the reference stack to segy (or first miniseed then segy).

I loaded a few *.nc files and I noticed there are two data variables REF and a CCF:

import numpy as np
import xarray as xr
import matplotlib.pyplot as plt

data = xr.open_dataset("W.10001.--_XW.10010.--.nc")

<xarray.Dataset> Size: 115kB
Dimensions:  (taxis: 4801)
Coordinates:
  * taxis    (taxis) float64 38kB -120.0 -120.0 -119.9 ... 119.9 120.0 120.0
Data variables:
    CCF      (taxis) float64 38kB ...
    REF      (taxis) float64 38kB ...

data.REF.plot()
plt.show()
data.CCF.plot()
plt.show()

From the figures I can see that CCF is the actual reference stack cross-correlation, while I am not particularly sure what REF is for.

REF

CCF

I would appreciate any comments or suggestions on how best to convert all these *.nc files to mseed (or segy) and if there is a way of extracting metadata from the *.nc files such as the station pair, or other items that can be used to populate an obspy stream for example.

Thanks

[ThomasLecocq]

The best is to use the API to get the results and export them, not to read the NC files directly. See the "interaction examples" in the documentation. Also, note that the current master version and its documentation aren't fully finished, and this is "as is"...

[ThomasLecocq]

(NB: the ref NC shouldn't contain a CCF object but a REF object indeed (in the example above, the REF object was pre-filled with random values (python randoms: 0 to 1 and should have been replaced by the true CCF values). Leaving this issue open for that very reason, for other interaction questions, please use the Discussions tab!

[seismolab-uct]

Thanks I'll look through the interaction examples, and will make sure to use the discussions tab for questions like these.