bugfix: update check4rotate
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@ -165,11 +165,11 @@ def clims(lim1, lim2):
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"""
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takes two pairs of limits and returns one pair of common limts
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:param lim1: limit 1
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:type lim1: int
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:type lim1: List[int]
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:param lim2: limit 2
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:type lim2: int
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:type lim2: List[int]
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:return: new upper and lower limit common to both given limits
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:rtype: [int, int]
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:rtype: List[int]
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>>> clims([0, 4], [1, 3])
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[0, 4]
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@ -536,8 +536,7 @@ def isSorted(iterable):
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>>> isSorted([2,3,1,4])
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False
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"""
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assert isIterable(iterable), 'object is not iterable; object: {' \
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'}'.format(iterable)
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assert isIterable(iterable), "object is not iterable; object: {}".format(iterable)
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if type(iterable) is str:
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iterable = [s for s in iterable]
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return sorted(iterable) == iterable
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@ -548,7 +547,7 @@ def isIterable(obj):
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takes a python object and returns True is the object is iterable and
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False otherwise
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:param obj: a python object
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:type obj: object
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:type obj: obj
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:return: True of False
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:rtype: bool
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"""
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@ -929,66 +928,87 @@ def check4rotated(data, metadata=None, verbosity=1):
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:rtype: `~obspy.core.stream.Stream`
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"""
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def rotate_components(wfstream, metadata=None):
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def rotation_required(trace_ids):
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"""
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Derive if any rotation is required from the orientation code of the input.
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:param trace_ids: string identifier of waveform data trace
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:type trace_ids: List(str)
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:return: boolean representing if rotation is necessary for any of the traces
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:rtype: bool
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"""
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orientations = [trace_id[-1] for trace_id in trace_ids]
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return any([orientation.isnumeric() for orientation in orientations])
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def rotate_components(wfs_in, metadata=None):
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"""
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Rotate components if orientation code is numeric (= non traditional orientation).
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Azimut and dip are fetched from metadata. To be rotated, traces of a station have to be cut to the same length.
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Returns unrotated traces of no metadata is provided
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:param wfstream: stream containing seismic traces of a station
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:type wfstream: `~obspy.core.stream.Stream`
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:param wfs_in: stream containing seismic traces of a station
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:type wfs_in: `~obspy.core.stream.Stream`
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:param metadata: tuple containing metadata type string and metadata parser object
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:type metadata: (str, `~obspy.io.xseed.parser.Parser`)
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:return: stream object with traditionally oriented traces (ZNE)
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:rtype: `~obspy.core.stream.Stream`
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"""
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# check if any traces in this station need to be rotated
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trace_ids = [trace.id for trace in wfstream]
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orientations = [trace_id[-1] for trace_id in trace_ids]
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rotation_required = [orientation.isnumeric() for orientation in orientations]
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if any(rotation_required):
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t_start = full_range(wfstream)
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try:
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azimuts = []
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dips = []
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for tr_id in trace_ids:
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azimuts.append(metadata.get_coordinates(tr_id, t_start)['azimuth'])
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dips.append(metadata.get_coordinates(tr_id, t_start)['dip'])
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except (KeyError, TypeError) as e:
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print('Failed to rotate trace {}, no azimuth or dip available in metadata'.format(tr_id))
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return wfstream
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if len(wfstream) < 3:
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print('Failed to rotate Stream {}, not enough components available.'.format(wfstream))
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return wfstream
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# to rotate all traces must have same length, so trim them
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wfstream = trim_station_components(wfstream, trim_start=True, trim_end=True)
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try:
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z, n, e = rotate2zne(wfstream[0], azimuts[0], dips[0],
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wfstream[1], azimuts[1], dips[1],
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wfstream[2], azimuts[2], dips[2])
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print('check4rotated: rotated trace {} to ZNE'.format(trace_ids))
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# replace old data with rotated data, change the channel code to ZNE
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z_index = dips.index(min(
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dips)) # get z-trace index, z has minimum dip of -90 (dip is measured from 0 to -90, with -90 being vertical)
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wfstream[z_index].data = z
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wfstream[z_index].stats.channel = wfstream[z_index].stats.channel[0:-1] + 'Z'
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del trace_ids[z_index]
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for trace_id in trace_ids:
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coordinates = metadata.get_coordinates(trace_id, t_start)
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dip, az = coordinates['dip'], coordinates['azimuth']
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trace = wfstream.select(id=trace_id)[0]
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if az > 315 or az <= 45 or az > 135 and az <= 225:
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trace.data = n
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trace.stats.channel = trace.stats.channel[0:-1] + 'N'
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elif az > 45 and az <= 135 or az > 225 and az <= 315:
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trace.data = e
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trace.stats.channel = trace.stats.channel[0:-1] + 'E'
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except (ValueError) as e:
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print(e)
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return wfstream
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if len(wfs_in) < 3:
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print(f"Stream {wfs_in=}, has not enough components to rotate.")
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return wfs_in
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return wfstream
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# check if any traces in this station need to be rotated
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trace_ids = [trace.id for trace in wfs_in]
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if not rotation_required(trace_ids):
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print(f"Stream does not need any rotation: Traces are {trace_ids=}")
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return wfs_in
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# check metadata quality
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t_start = full_range(wfs_in)
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try:
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azimuths = []
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dips = []
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for tr_id in trace_ids:
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azimuths.append(metadata.get_coordinates(tr_id, t_start)['azimuth'])
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dips.append(metadata.get_coordinates(tr_id, t_start)['dip'])
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except (KeyError, TypeError) as err:
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print(f"{type(err)=} occurred: {err=} Rotating not possible, not all azimuth and dip information "
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f"available in metadata. Stream remains unchanged.")
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return wfs_in
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except Exception as err:
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print(f"Unexpected {err=}, {type(err)=}")
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raise
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# to rotate all traces must have same length, so trim them
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wfs_out = trim_station_components(wfs_in, trim_start=True, trim_end=True)
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try:
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z, n, e = rotate2zne(wfs_out[0], azimuths[0], dips[0],
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wfs_out[1], azimuths[1], dips[1],
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wfs_out[2], azimuths[2], dips[2])
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print('check4rotated: rotated trace {} to ZNE'.format(trace_ids))
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# replace old data with rotated data, change the channel code to ZNE
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z_index = dips.index(min(
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dips)) # get z-trace index, z has minimum dip of -90 (dip is measured from 0 to -90, with -90
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# being vertical)
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wfs_out[z_index].data = z
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wfs_out[z_index].stats.channel = wfs_out[z_index].stats.channel[0:-1] + 'Z'
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del trace_ids[z_index]
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for trace_id in trace_ids:
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coordinates = metadata.get_coordinates(trace_id, t_start)
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dip, az = coordinates['dip'], coordinates['azimuth']
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trace = wfs_out.select(id=trace_id)[0]
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if az > 315 or az <= 45 or 135 < az <= 225:
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trace.data = n
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trace.stats.channel = trace.stats.channel[0:-1] + 'N'
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elif 45 < az <= 135 or 225 < az <= 315:
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trace.data = e
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trace.stats.channel = trace.stats.channel[0:-1] + 'E'
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except ValueError as err:
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print(f"{err=} Rotation failed. Stream remains unchanged.")
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return wfs_in
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return wfs_out
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if metadata is None:
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if verbosity:
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