Changeset acb37d9 in sasview for DataLoader

Timestamp:

Feb 12, 2009 12:05:11 PM (16 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:

31e3298

Parents:

ca10d8e

Message:

get_q_compo() for qx, and qy is added.

File:

• DataLoader/manipulations.py (modified) (1 diff)

DataLoader/manipulations.py

@@ -31 +31 @@
     theta      = 0.5*math.atan(plane_dist/det_dist)
     return (4.0*math.pi/wavelength)*math.sin(theta)
+
+def get_q_compo(dx, dy, det_dist, wavelength,compo=None):
+    #This reduces tiny error at very large q.
+    #Implementation of this func is not started yet.<--ToDo
+    if dy==0:
+        if dx>=0:
+            angle_xy=0
+        else:
+            angle_xy=math.pi
+    else:
+        angle_xy=math.atan(dx/dy)
+        
+    if compo=="x":
+        out=get_q(dx, dy, det_dist, wavelength)*cos(angle_xy)
+    elif compo=="y":
+        out=get_q(dx, dy, det_dist, wavelength)*sin(angle_xy)
+    else:
+        out=get_q(dx, dy, det_dist, wavelength)
+    return out
     
 class _Slab(object):