source: sasview/DataLoader/test/utest_averaging.py @ 916a15f

import unittest

from DataLoader.loader import  Loader
from DataLoader.manipulations import Ring, CircularAverage
 
import os.path

class data_info_tests(unittest.TestCase):
    
    def setUp(self):
        self.data = Loader().load('MAR07232_rest.ASC')
        
    def test_ring(self):
        """
            Test ring averaging
        """
        r = Ring(r_min=.005, r_max=.01, 
                 center_x=self.data.detector[0].beam_center.x, 
                 center_y=self.data.detector[0].beam_center.y)
        r.nbins_phi = 20
        
        o = r(self.data)
        answer = Loader().load('ring_testdata.txt')
        for i in range(r.nbins_phi):
            self.assertAlmostEqual(o.x[i], answer.x[i], 4)
            self.assertAlmostEqual(o.y[i], answer.y[i], 4)
            self.assertAlmostEqual(o.dy[i], answer.dy[i], 4)
            
    def test_circularavg(self):
        """
            Test circular averaging
            The test data was not generated by IGOR.
        """
        r = CircularAverage(r_min=.00, r_max=.025, 
                 bin_width=0.0003)
        r.nbins_phi = 20
        
        o = r(self.data)
        answer = Loader().load('avg_testdata.txt')
        for i in range(r.nbins_phi):
            self.assertAlmostEqual(o.x[i], answer.x[i], 4)
            self.assertAlmostEqual(o.y[i], answer.y[i], 4)
            self.assertAlmostEqual(o.dy[i], answer.dy[i], 4)
            
    def test_box(self):
        """
            Test circular averaging
            The test data was not generated by IGOR.
        """
        from DataLoader.manipulations import Boxsum, Boxavg
        
        r = Boxsum(x_min=.01, x_max=.015, y_min=0.01, y_max=0.015)
        s, ds = r(self.data)
        self.assertAlmostEqual(s, 151.81809601016641, 4)
        self.assertAlmostEqual(ds, 16.245399156009537, 4)
    
        r = Boxavg(x_min=.01, x_max=.015, y_min=0.01, y_max=0.015)
        s, ds = r(self.data)
        self.assertAlmostEqual(s, 0.11195555855955155, 4)
        self.assertAlmostEqual(ds, 0.011979881083557541, 4)
            

if __name__ == '__main__':
    unittest.main()