Changeset 1584fff in sasview for sansmodels/src/sans

Timestamp:

Feb 28, 2011 1:42:26 PM (13 years ago)

Author:

Jae Cho <jhjcho@…>

Branches:

master, ESS_GUI, ESS_GUI_Docs, ESS_GUI_batch_fitting, ESS_GUI_bumps_abstraction, ESS_GUI_iss1116, ESS_GUI_iss879, ESS_GUI_iss959, ESS_GUI_opencl, ESS_GUI_ordering, ESS_GUI_sync_sascalc, costrafo411, magnetic_scatt, release-4.1.1, release-4.1.2, release-4.2.2, release_4.0.1, ticket-1009, ticket-1094-headless, ticket-1242-2d-resolution, ticket-1243, ticket-1249, ticket885, unittest-saveload

Children:

6bbeacd4

Parents:

04eb1a4

Message:

Added pinhole smearing; comparison w/ Igor/NIST

File:

• sansmodels/src/sans/models/test/utest_smearing.py (modified) (2 diffs)

sansmodels/src/sans/models/test/utest_smearing.py

@@ -10 +10 @@
 #from DataLoader.qsmearing import SlitSmearer, QSmearer, smear_selection
 from sans.models.qsmearing import SlitSmearer, QSmearer, smear_selection
+from sans.models.SphereModel import SphereModel
 import os.path
-
+from time import time
 class smear_tests(unittest.TestCase):
     
@@ -91 +92 @@
             self.assertAlmostEqual(answer[i], output[i], 2)
       
-
+class smear_test_1Dpinhole(unittest.TestCase):
+    
+    def setUp(self):
+        # NIST sample data
+        self.data = Loader().load("CMSphere5.txt")
+        # NIST smeared sphere w/ param values below
+        self.answer = Loader().load("CMSphere5smearsphere.txt")
+        # call spheremodel
+        self.model = SphereModel()
+        # setparams consistent with Igor default
+        self.model.setParam('scale', 1.0)
+        self.model.setParam('background', 0.01)
+        self.model.setParam('radius', 60.0)
+        self.model.setParam('sldSolv', 6.3e-06)
+        self.model.setParam('sldSph', 1.0e-06)
+        
+    def test_q(self):
+        """
+        Compare Pinhole resolution smearing with NIST
+        """
+        # x values
+        input = numpy.zeros(len(self.data.x))
+        # set time
+        st1 = time()
+        # cal I w/o smear
+        input = self.model.evalDistribution(self.data.x)
+        # Cal_smear (first call)
+        for i in range(1000):
+            s = QSmearer(self.data, self.model)
+        # stop and record time taken
+        first_call_time = time()-st1
+        # set new time
+        st = time()
+        # cal I w/o smear (this is not neccessary to call but just to be fare
+        input = self.model.evalDistribution(self.data.x)
+        # smear cal (after first call done above)
+        for i in range(1000):
+            output = s(input)
+        # record time taken
+        last_call_time = time()-st
+        # compare the ratio of ((NIST_answer-SsanView_answer)/NIST_answer)
+        # If the ratio less than 1%, pass the test 
+        for i in range(len(self.data.x)):
+            ratio  = math.fabs((self.answer.y[i]-output[i])/self.answer.y[i])
+            if ratio > 0.006:
+                ratio = 0.006
+            self.assertEqual(math.fabs((self.answer.y[i]-output[i])/ \
+                                       self.answer.y[i]), ratio) 
+        # print
+        print "\n NIST_time = 10sec:"
+        print "Cal_time(1000 times of first_calls; ) = ",  first_call_time  
+        print "Cal_time(1000 times of calls) = ",  last_call_time 
+        
 if __name__ == '__main__':
     unittest.main()