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# 

# LSST Data Management System 

# Copyright 2012-2013 LSST Corporation. 

# 

# This product includes software developed by the 

# LSST Project (http://www.lsst.org/). 

# 

# 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 LSST License Statement and 

# the GNU General Public License along with this program. If not, 

# see <http://www.lsstcorp.org/LegalNotices/>. 

# 

 

import unittest 

 

import numpy as np 

 

import lsst.utils.tests 

import lsst.afw.image as afwImage 

import lsst.afw.display.ds9 as ds9 

from lsst.ip.isr import maskNans 

 

debug = False 

 

 

class MaskNansTestCase(lsst.utils.tests.TestCase): 

 

def setUp(self): 

self.size = 100 

self.freqImage = 34 

self.freqMask = 12 

self.freqVariance = 23 

self.afterMask = 2 

self.allowMask = 1 

 

def check(self, ImageClass): 

image = ImageClass(self.size, self.size) 

x, y = np.indices((self.size, self.size)) 

image.getImage().getArray()[y, x] = np.where(x*y % self.freqImage, 0, np.nan) 

image.getMask().getArray()[y, x] = np.where(x*y % self.freqMask, 0, self.allowMask) 

image.getVariance().getArray()[y, x] = np.where(x*y % self.freqVariance, 0, np.nan) 

 

52 ↛ 53line 52 didn't jump to line 53, because the condition on line 52 was never true if debug: 

ds9.mtv(image.getImage(), frame=1, title="Image") 

ds9.mtv(image.getVariance(), frame=2, title="Variance") 

ds9.mtv(image.getMask(), frame=3, title="Original mask") 

 

isUnmasked = np.logical_not(image.getMask().getArray() & self.allowMask) 

isNan = np.logical_or(np.isnan(image.getImage().getArray()), 

np.isnan(image.getVariance().getArray())) 

 

maskExpected = np.where(np.logical_and(isUnmasked, isNan), self.afterMask, 

image.getMask().getArray()) 

numExpected = np.count_nonzero(maskExpected & self.afterMask) 

 

numNans = maskNans(image, self.afterMask, self.allowMask) 

 

67 ↛ 68line 67 didn't jump to line 68, because the condition on line 67 was never true if debug: 

ds9.mtv(image.getMask(), frame=4, title="UNC-ed mask") 

 

self.assertEqual(numNans, numExpected) 

self.assertMasksEqual(image.getMask(), maskExpected) 

 

def testMaskImageF(self): 

self.check(afwImage.MaskedImageF) 

 

def testMaskImageD(self): 

self.check(afwImage.MaskedImageD) 

 

 

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

pass 

 

 

def setup_module(module): 

lsst.utils.tests.init() 

 

 

88 ↛ 89line 88 didn't jump to line 89, because the condition on line 88 was never trueif __name__ == "__main__": 

lsst.utils.tests.init() 

unittest.main()