I have RESP files containing channel responses in SEED format and a list of stations with coordinates. How can I join the information in OBSPY to generate datalessSEED volumes or SeisComP3 XML which are complete for the station and include all channels?
inv = obspy.read_inventory("RESP_file")
This reads a RESP file to an `Inventory` object but the coordinates will
be missing. You'll have to manually add them to their respective fields.
If you have multiple RESP files you might have multiple `Inventory`
objects. You can join them by just adding them together.
ObsPy currently cannot write `Inventory` objects to dataless SEED or
seiscomp XML files - it can only read them - so you'd have to write to
StationXML. Pull requests to add write support for any of these formats
would of course be very welcome
If you are fine with working with one of our lower level objects you can
use the `Parser` object from `obspy.io.xseed`. This can read RESP files,
you add the coordinates and then write out SEED files. Internally the
RESP/SEED reading is based on first parsing to the `Parser` object and
then converting to an `Inventory` object. This was really painful to
implement so I doubt we'll implement the other way around without
someone really pushing for it.
thanks for the answer. Having correct meta data is always crucial and has always been a pain. I appreciate that ObsPy can now also work with NRL and I recommend our SMP  for keeping the meta data clean and up-to-date.