Inventory select multiple keyweords

[jwellik]

I have a question to expand on this archived post:

Efficient access to Station in Inventory given network code and station code

I am trying to use information in the Station objects retrieved via fdsn.get_stations() (longitude, latitude, azimuth, dip) to add the distance and back azimuth information to a stream and rotate to ENZ components (some components are 123 or 12Z and rotated relative to ENZ). Given a station's network and station codes from a trace in a Stream object, what is the recommended (efficient) way to access the corresponding station in an Inventory object? Is there an equivalent method/function to Stre…

Is there a way to select an inventory based on multiple station codes? E.g.,

tmp = inventory.select(stations=[“BRSP”,“TDH”,“HOOD”])

Related question: Why does appending inventories always add a new network even if the selected inventories already exist. E.g.,

tmp = inventory.select(station=“BRSP”) # CC network
tmp += inventory.select(station=“HOOD”) # UW network
tmp += inventory.select(station=“TDH”) # UW network

returns an inventory with 3 networks, each with 1 station.

[megies]

@jwellik

Is there a way to select an inventory based on multiple station codes? E.g.,

tmp = inventory.select(stations=[“BRSP”,“TDH”,“HOOD”])

Currently not, I’m afraid.

@jwellik

tmp = inventory.select(station=“BRSP”) # CC network
tmp += inventory.select(station=“HOOD”) # UW network
tmp += inventory.select(station=“TDH”) # UW network

returns an inventory with 3 networks, each with 1 station.

Short version:
Currently you have to merge manually yourself, if you are sure these network objects are identical.

Long story:
The problem is that people may think of “it’s the same network” as simply “network code is identical”. But the Network object has plenty of more information on it that makes is not identical like start/end times, description, even comment objects. If we were to just merge together without looking at all these details, we might inadvertently alter the actual information.
Basically this is just the easiest way to do it with being absolutely sure that the stored information is not changed.

That being said, we could absolutely do better here and in your scenario it very likely is the case that these duplicated network objects come from the same origin object, and so are identical in all details and could be merged. It’s just nobody has come forward and put the work in to make such a “merge” functionality