Changeset e4e9162 in sasview for src/sas/sascalc/dataloader

Timestamp:

Oct 24, 2018 9:10:35 AM (6 years ago)

Author:

Paul Kienzle <pkienzle@…>

Branches:

master, magnetic_scatt, release-4.2.2, ticket-1009, ticket-1094-headless, ticket-1242-2d-resolution, ticket-1249

Children:

4cbb2f5

Parents:

1852b17

Message:

update code comments

File:

• src/sas/sascalc/dataloader/manipulations.py (modified) (1 diff)

src/sas/sascalc/dataloader/manipulations.py

@@ -931 +931 @@
             y = y/y_counts
             y_err = np.sqrt(y_err)/y_counts
-            # The type of averaging: phi,q2, or q
-            # Calculate x[i]should be at the center of the bin
+            # The type of averaging: phi, q2, or q
+            # Calculate x values at the center of the bin
             if run.lower() == 'phi':
-                step  = (self.phi_max - self.phi_min) / self.nbins
+                step = (self.phi_max - self.phi_min) / self.nbins
                 x = (np.arange(self.nbins) + 0.5) * step + self.phi_min
             else:
-                # We take the center of ring area, not radius.
-                # This is more accurate than taking the radial center of ring.
-                # delta_r = (self.r_max - self.r_min) / self.nbins
-                # r_inner = self.r_min + delta_r * i
-                # r_outer = r_inner + delta_r
-                # x[i] = math.sqrt((r_inner * r_inner + r_outer * r_outer) / 2)
+                # set q to the average of the q values within each bin
                 x = x/y_counts
+
+                ### Alternate algorithm
+                ## We take the center of ring area, not radius.
+                ## This is more accurate than taking the radial center of ring.
+                #step = (self.r_max - self.r_min) / self.nbins
+                #r_inner = self.r_min + step * np.arange(self.nbins)
+                #x = math.sqrt((r_inner**2 + (r_inner + step)**2) / 2)
 
         idx = (np.isfinite(y) & np.isfinite(y_err))