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# This file is part of meas_base. 

# 

# Developed for the LSST Data Management System. 

# This product includes software developed by the LSST Project 

# (https://www.lsst.org). 

# See the COPYRIGHT file at the top-level directory of this distribution 

# for details of code ownership. 

# 

# This program is free software: you can redistribute it and/or modify 

# it under the terms of the GNU General Public License as published by 

# the Free Software Foundation, either version 3 of the License, or 

# (at your option) any later version. 

# 

# This program is distributed in the hope that it will be useful, 

# but WITHOUT ANY WARRANTY; without even the implied warranty of 

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 

# GNU General Public License for more details. 

# 

# You should have received a copy of the GNU General Public License 

# along with this program. If not, see <https://www.gnu.org/licenses/>. 

 

import numpy as np 

 

import unittest 

 

import lsst.utils.tests 

import lsst.geom 

import lsst.meas.base 

import lsst.meas.base.tests 

from lsst.meas.base.tests import (AlgorithmTestCase) 

import lsst.pex.config 

from lsst.meas.base.pluginRegistry import register 

from lsst.meas.base.sfm import SingleFramePluginConfig, SingleFramePlugin 

from lsst.meas.base import FlagDefinitionList, FlagHandler 

 

 

class CentroiderConfig(SingleFramePluginConfig): 

 

moveX = lsst.pex.config.Field(dtype=int, default=0, optional=False, 

doc="amount to re-position in X") 

moveY = lsst.pex.config.Field(dtype=int, default=0, optional=False, 

doc="amount to re-position in Y") 

dist = lsst.pex.config.Field(dtype=int, default=None, optional=False, 

doc="distance to allow centroid to be off") 

 

 

@register("test_Centroider") 

class Centroider(SingleFramePlugin): 

"""Sample Python measurement plugin. 

 

The flag handler for this plugin is created during construction, and is 

called using the method `fail`. All plugins are required to implement 

this method, which is used to set the flags in the output source record if 

an error occurs. 

""" 

ConfigClass = CentroiderConfig 

# Class variables ErrEnum and FLAGDEFS are added by the decorator 

 

@classmethod 

def getExecutionOrder(cls): 

return cls.CENTROID_ORDER 

 

def __init__(self, config, name, schema, metadata): 

SingleFramePlugin.__init__(self, config, name, schema, metadata) 

 

flagDefs = FlagDefinitionList() 

flagDefs.add("flag", "General Failure error") 

flagDefs.add("test_flag", "second flag") 

self.flagHandler = FlagHandler.addFields(schema, name, flagDefs) 

self.xKey = schema.addField(schema.join(name, "x"), type=np.float64) 

self.yKey = schema.addField(schema.join(name, "y"), type=np.float64) 

if self.config.dist is None: 

self.centroidChecker = lsst.meas.base.CentroidChecker(schema, name) 

else: 

self.centroidChecker = lsst.meas.base.CentroidChecker(schema, name, True, self.config.dist) 

 

def measure(self, measRecord, exposure): 

"""This measure routine moves the centroid by design to create an error. 

""" 

measRecord.set(self.xKey, measRecord.getX() + self.config.moveX) 

measRecord.set(self.yKey, measRecord.getY() + self.config.moveY) 

self.centroidChecker(measRecord) 

 

def fail(self, measRecord, error=None): 

"""Respond to measurement failures. 

 

This routine responds to the standard failure call in baseMeasurement 

If the exception is a MeasurementError, the error will be passed to 

the fail method by the MeasurementFramework. 

""" 

if error is None: 

self.flagHandler.handleFailure(measRecord) 

else: 

self.flagHandler.handleFailure(measRecord, error.cpp) 

 

 

class FlagHandlerTestCase(AlgorithmTestCase, lsst.utils.tests.TestCase): 

 

# Setup a configuration and datasource to be used by the plugin tests 

def setUp(self): 

self.algName = "test_Centroider" 

bbox = lsst.geom.Box2I(lsst.geom.Point2I(0, 0), lsst.geom.Point2I(100, 100)) 

self.dataset = lsst.meas.base.tests.TestDataset(bbox) 

self.dataset.addSource(instFlux=1E5, centroid=lsst.geom.Point2D(25, 26)) 

 

def makeConfig(self, algName=None): 

if algName is None: 

algName = self.algName 

config = lsst.meas.base.SingleFrameMeasurementConfig() 

config.plugins = [algName] 

config.slots.centroid = None 

config.slots.apFlux = None 

config.slots.calibFlux = None 

config.slots.gaussianFlux = None 

config.slots.modelFlux = None 

config.slots.psfFlux = None 

config.slots.shape = None 

config.slots.psfShape = None 

return config 

 

def tearDown(self): 

del self.dataset 

 

def testNoError(self): 

"""Test that the ``resetToPeak`` flag is not set when no error seen. 

""" 

schema = self.dataset.makeMinimalSchema() 

config = self.makeConfig() 

config.slots.centroid = "truth" 

task = lsst.meas.base.SingleFrameMeasurementTask(schema=schema, config=config) 

exposure, cat = self.dataset.realize(noise=100.0, schema=schema, randomSeed=0) 

task.run(cat, exposure) 

source = cat[0] 

self.assertFalse(source.get("test_Centroider_flag")) 

self.assertFalse(source.get("test_Centroider_flag_resetToPeak")) 

 

def testCentroidDistance(self): 

"""Test that a slight centroid movement triggers the distance error. 

""" 

schema = self.dataset.makeMinimalSchema() 

config = self.makeConfig() 

config.slots.centroid = "truth" 

config.plugins[self.algName].moveX = -2 

config.plugins[self.algName].dist = 1 

task = lsst.meas.base.SingleFrameMeasurementTask(schema=schema, config=config) 

exposure, cat = self.dataset.realize(noise=100.0, schema=schema, randomSeed=1) 

source = cat[0] 

task.run(cat, exposure) 

self.assertTrue(source.get("test_Centroider_flag")) 

self.assertTrue(source.get("test_Centroider_flag_resetToPeak")) 

self.assertEqual(source.getFootprint().getPeaks()[0].getFx(), source.get("test_Centroider_x")) 

 

def testCentroidOutsideFootprint(self): 

"""A large centroid movement should trigger a move back to first peak. 

""" 

schema = self.dataset.makeMinimalSchema() 

config = self.makeConfig() 

config.slots.centroid = "truth" 

config.plugins[self.algName].moveX = -30 

task = lsst.meas.base.SingleFrameMeasurementTask(schema=schema, config=config) 

exposure, cat = self.dataset.realize(noise=100.0, schema=schema, randomSeed=2) 

source = cat[0] 

task.run(cat, exposure) 

self.assertTrue(source.get("test_Centroider_flag")) 

self.assertTrue(source.get("test_Centroider_flag_resetToPeak")) 

self.assertEqual(source.getFootprint().getPeaks()[0].getFx(), source.get("test_Centroider_x")) 

 

def testNaiveCentroid(self): 

"""Test the `NaiveCentroid` works with the ``maxDistance`` check. 

""" 

schema = self.dataset.makeMinimalSchema() 

config = self.makeConfig("base_NaiveCentroid") 

config.plugins["base_NaiveCentroid"].maxDistToPeak = .0001 

task = lsst.meas.base.SingleFrameMeasurementTask(schema=schema, config=config) 

exposure, cat = self.dataset.realize(noise=100.0, schema=schema, randomSeed=3) 

source = cat[0] 

task.run(cat, exposure) 

self.assertTrue(source.get("base_NaiveCentroid_flag")) 

self.assertTrue(source.get("base_NaiveCentroid_flag_resetToPeak")) 

 

def testSdssCentroid(self): 

"""Test the `SdssCentroid` works with the ``maxDistance`` check. 

""" 

schema = self.dataset.makeMinimalSchema() 

config = self.makeConfig("base_SdssCentroid") 

config.plugins["base_SdssCentroid"].maxDistToPeak = .0001 

task = lsst.meas.base.SingleFrameMeasurementTask(schema=schema, config=config) 

exposure, cat = self.dataset.realize(noise=100.0, schema=schema, randomSeed=4) 

source = cat[0] 

task.run(cat, exposure) 

self.assertTrue(source.get("base_SdssCentroid_flag")) 

self.assertTrue(source.get("base_SdssCentroid_flag_resetToPeak")) 

 

 

class TestMemory(lsst.utils.tests.MemoryTestCase): 

pass 

 

 

def setup_module(module): 

lsst.utils.tests.init() 

 

 

203 ↛ 204line 203 didn't jump to line 204, because the condition on line 203 was never trueif __name__ == "__main__": 

lsst.utils.tests.init() 

unittest.main()