Changeset c8c4fa1 in sasview for Invariant

Timestamp:

Dec 18, 2009 12:49:00 PM (14 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:

25a92d1

Parents:

eb62193

Message:

Added linear fit tests with/without holding the slope

Location:

Invariant/test

Files:

• linefittest.txt (added)
• utest_use_cases.py (modified) (1 diff)

Invariant/test/utest_use_cases.py

@@ -11 +11 @@
     print "I am not of type Dataloader.Data1D"
     
+class TestLineFit(unittest.TestCase):
+    """
+        Test Line fit 
+    """
+    def setUp(self):
+        self.data = Loader().load("linefittest.txt")
+        
+    def test_fit_line_data_nosigma(self):
+        """ 
+            Fit_Test_1: test linear fit, ax +b, without fixed
+        """
+        
+        # Create invariant object. Background and scale left as defaults.
+        fit = invariant.FitFunctor(data=self.data)
+        
+        ##Without holding
+        a,b = fit.fit(power=None)
+
+        # Test results
+        self.assertAlmostEquals(a, 2.3983,3)
+        self.assertAlmostEquals(b, 0.87833,3)
+
+
+    def test_fit_line_data_sigma(self):
+        """ 
+            Fit_Test_2: test linear fit, ax +b, with 'a' fixed
+        """
+        
+        # Create invariant object. Background and scale left as defaults.
+        fit = invariant.FitFunctor(data=self.data)
+        
+        #With holding a = -power =4
+        a,b = fit.fit(power=-4)
+
+        # Test results
+        self.assertAlmostEquals(a, 4)
+        self.assertAlmostEquals(b, -4.0676,3)
+        
 class TestInvPolySphere(unittest.TestCase):
     """