/usr/lib/python3/dist-packages/owslib/swe/observation/waterml2.py is in python3-owslib 0.16.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# =============================================================================
# Copyright (c) 2014 Pete Taylor
#
# Authors : Pete Taylor <peterataylor@gmail.com>
#
# Contact email: peterataylor@gmail.com
# =============================================================================
from owslib.util import nspath_eval
from owslib.namespaces import Namespaces
from owslib.util import testXMLAttribute, testXMLValue
from owslib.swe.common import Quantity
from dateutil import parser
from owslib.swe.observation.om import OM_Observation, Result
def get_namespaces():
ns = Namespaces()
return ns.get_namespaces(["swe20", "xlink", "sos20", "om20", "gml32",
"xsi", "wml2"])
namespaces = get_namespaces()
def nspv(path):
return nspath_eval(path, namespaces)
class MeasurementTimeseriesObservation(OM_Observation):
''' A timeseries observation that has a measurement timeseries as
result. An implementation of the WaterML2
MeasurementTimeseriesObservation. '''
def __init__(self, element):
super(MeasurementTimeseriesObservation, self).__init__(element)
self._parse_result()
def _parse_result(self):
''' Parse the result element of the observation type '''
if self.result is not None:
result = self.result.find(nspv(
"wml2:MeasurementTimeseries"))
self.result = MeasurementTimeseries(result)
def get_result(self):
return self.result
class Timeseries(Result):
''' Generic time-series class '''
def __init__(self, element):
super(Timeseries, self).__init__(element)
class MeasurementTimeseries(Timeseries):
''' A WaterML2.0 timeseries of measurements, with per-value metadata. '''
def __init__(self, element):
super(MeasurementTimeseries, self).__init__(element)
self.defaultTVPMetadata = TVPMeasurementMetadata(element.find(
nspv("wml2:defaultPointMetadata/wml2:DefaultTVPMeasurementMetadata")))
elems = element.findall(nspv("wml2:point"))
self.points = []
for point in elems:
self.points.append(TimeValuePair(point))
def __iter__(self):
for point in self.points:
yield point
def __len__(self):
return len(self.points)
def _parse_metadata(self, element):
''' Parse metadata elements relating to timeseries:
TS: baseTime, spacing, commentBlock, parameter
MTS: startAnchor, endAnchor, cumulative, accAnchor/Length, maxGap
'''
pass
class TimeValuePair(object):
''' A time-value pair as specified by WaterML2.0
Currently no support for tvp metadata.
'''
def __init__(self, element):
date_str = testXMLValue(
element.find(nspv("wml2:MeasurementTVP/wml2:time")))
try:
self.datetime = parser.parse(date_str)
except:
raise ValueError("Error parsing datetime string: %s" % date_str)
value_str = testXMLValue(element.find(nspv(
"wml2:MeasurementTVP/wml2:value")))
try:
self.value = float(value_str)
except:
self.value = float('nan')
def __str__(self):
return str(self.datetime) + "," + str(self.value)
class TVPMetadata(object):
def __init__(self, element):
''' Base time-value pair metadata. Still to do:
- relatedObservation
'''
self.quality = testXMLAttribute(element.find(nspv(
"wml2:quality")), nspv("xlink:href"))
self.nilReason = testXMLAttribute(element.find(nspv(
"wml2:nilReason")), nspv("xlink:href"))
self.comment = testXMLValue(element.find(nspv(
"wml2:comment")))
self.qualifier = testXMLAttribute(element.find(nspv(
"wml2:qualifier")), nspv("xlink:href"))
self.processing = testXMLValue(element.find(nspv(
"wml2:processing")), nspv("xlink:href"))
self.source = testXMLValue(element.find(nspv(
"wml2:source")), nspv("xlink:href"))
class TVPMeasurementMetadata(TVPMetadata):
''' Measurement specific metadata. Still to do:
- aggregationDuration
'''
def __init__(self, element):
super(TVPMeasurementMetadata, self).__init__(element)
self.uom = testXMLAttribute(element.find(nspv(
"wml2:uom")), "code")
self.interpolationType = testXMLAttribute(element.find(nspv(
"wml2:interpolationType")), nspv("xlink:href"))
self.censoredReason = testXMLAttribute(element.find(nspv(
"wml2:censoredReason")), "xlink:href")
accuracy = testXMLValue(element.find(nspv("wml2:accuracy")))
if accuracy is not None:
self.accuracy = Quantity(element)
class MeasurementTimeseriesDomainRange(Timeseries):
''' Class to implement domain range timeseries encoding '''
def __init__(self, element):
super(MeasurementTimeseriesDomainRange, self, element).__init__()
class MonitoringPoint(object):
''' A WaterML2.0 Monitoring Point, which is a specialised O&M SamplingPoint
'''
def __init__(self, element):
pass
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