Changeset 6e74ee4 in sasview for Invariant

Timestamp:

Dec 18, 2009 3:43:36 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:

85b3971

Parents:

25a92d1

Message:

added fitfunctor.fit tests without errorbar data

Location:

Invariant/test

Files:

• linefittest_no_weight.txt (added)
• utest_use_cases.py (modified) (3 diffs)

Invariant/test/utest_use_cases.py

@@ -18 +18 @@
         self.data = Loader().load("linefittest.txt")
         
-    def test_fit_line_data_nosigma(self):
+    def test_fit_line_data(self):
         """ 
             Fit_Test_1: test linear fit, ax +b, without fixed
@@ -34 +34 @@
 
 
-    def test_fit_line_data_sigma(self):
+    def test_fit_line_data_fixed(self):
         """ 
             Fit_Test_2: test linear fit, ax +b, with 'a' fixed
@@ -49 +49 @@
         self.assertAlmostEquals(b, -4.0676,3)
         
+class TestLineFitNoweight(unittest.TestCase):
+    """
+        Test Line fit without weight(dy data)
+    """
+    def setUp(self):
+        self.data = Loader().load("linefittest_no_weight.txt")
+        
+    def test_fit_line_data_no_weight(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, 2.4727,3)
+        self.assertAlmostEquals(b, 0.6,3)
+
+
+    def test_fit_line_data_fixed_no_weight(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, -7.8,3)
+                
 class TestInvPolySphere(unittest.TestCase):
     """