Changeset eb62193 in sasview for Invariant

Timestamp:

Dec 18, 2009 10:47:53 AM (15 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:

c8c4fa1

Parents:

db27a2c

Message:

correction of sigmas

File:

• Invariant/invariant.py (modified) (2 diffs)

Invariant/invariant.py

@@ -128 +128 @@
 
         # Compute theory data f(x)
-        fx = self.data.y[self.idx_unsmeared ]/sigma2
+        fx = self.data.y[self.idx_unsmeared ]/sigma
         ## Smear theory data
         if self.smearer is not None:
@@ -135 +135 @@
         ##power is given only for function = power_law    
         if power != None:
-            a = -math.fabs(power)
-            b = (numpy.sum(fx) - a*numpy.sum(self.data.x[self.idx]/sigma2))/numpy.sum(numpy.ones(len(sigma2))/sigma2)
+            a = -(power)
+            b = (numpy.sum(fx/sigma) - a*numpy.sum(self.data.x[self.idx]/sigma2))/numpy.sum(numpy.ones(len(sigma2))/sigma2)
             return a, b
         else:
-            A = numpy.vstack([ self.data.x[self.idx]/sigma2,
-                               numpy.ones(len(self.data.x[self.idx]))/sigma2]).T
+            A = numpy.vstack([ self.data.x[self.idx]/sigma,
+                               numpy.ones(len(self.data.x[self.idx]))/sigma]).T
     
             a, b = numpy.linalg.lstsq(A, fx)[0]