Coverage for python/lsst/faro/base/BaseSubTasks.py : 43%

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1import astropy.units as u
2import numpy as np
3from lsst.pipe.base import Struct, Task
4from lsst.pex.config import Config, Field
5from lsst.verify import Measurement
7from lsst.faro.utils.matcher import mergeCatalogs
9__all__ = ('NumSourcesTask', 'NumSourcesMergeTask',
10 'NumpySummaryTaskConfig', 'NumpySummaryTask')
13class NumSourcesTaskConfig(Config):
14 doPrimary = Field(doc="Only count sources where detect_isPrimary is True.",
15 dtype=bool, default=False)
18class NumSourcesTask(Task):
20 ConfigClass = NumSourcesTaskConfig
21 _DefaultName = "numSourcesTask"
23 def run(self, catalog, metric_name, vIds=None):
24 self.log.info(f"Measuring {metric_name}")
25 if self.config.doPrimary:
26 nSources = np.sum(catalog['detect_isPrimary'] is True)
27 else:
28 nSources = len(catalog)
29 print('nSources = %i'%(nSources))
30 meas = Measurement("nsrcMeas", nSources * u.count)
31 return Struct(measurement=meas)
34class NumSourcesMergeTask(Task):
36 ConfigClass = Config
37 _DefaultName = "numSourcesMergeTask"
39 def run(self, metricName, catalogs, photoCalibs, astromCalibs, dataIds):
40 self.log.info(f"Measuring {metricName}")
41 catalog = mergeCatalogs(catalogs, photoCalibs, astromCalibs)
42 nSources = len(catalog)
43 meas = Measurement("nsrcMeas", nSources * u.count)
44 return Struct(measurement=meas)
47class NumpySummaryTaskConfig(Config):
48 summary = Field(dtype=str, default="median",
49 doc="Aggregation to use for summary metrics")
52class NumpySummaryTask(Task):
54 ConfigClass = NumpySummaryTaskConfig
55 _DefaultName = "numpySummaryTask"
57 def run(self, measurements, agg_name, package, metric):
58 agg = agg_name.lower()
59 if agg == "summary":
60 agg = self.config.summary
61 self.log.info(f"Computing the {agg} of {package}_{metric} values")
63 if len(measurements) == 0:
64 self.log.info('Recieved zero length measurments list. Returning NaN.')
65 # In the case of an empty list, there is nothing we can do other than
66 # to return a NaN
67 value = u.Quantity(np.nan)
68 else:
69 unit = measurements[0].quantity.unit
70 value = getattr(np, agg)(u.Quantity([x.quantity for x in measurements
71 if np.isfinite(x.quantity)]))
72 # Make sure return has same unit as inputs
73 # In some cases numpy can return a NaN and the unit gets dropped
74 value = value.value*unit
75 return Struct(measurement=Measurement(f"metricvalue_{agg_name.lower()}_{package}_{metric}", value))