Changes between Version 4 and Version 5 of DemoIntegrateTilted

Timestamp:

Jul 28, 2011 12:34:42 AM (12 years ago)

Author:

toby

Comment:

--

DemoIntegrateTilted

@@ -52 +52 @@
    ([https://subversion.xor.aps.anl.gov/trac/pyGSAS/attachment/wiki/DemoIntegrateTilted/d1w4.png view]). 
 
- Use the left mouse button to click on at least four locations on the innermost ring. When done, press the right mouse button well away from the ring [on the Mac, if you have a single-button mouse, hold the Command (⌘) key down and click]. 
+ Third: 
+  Use the left mouse button to click on at least four locations on the innermost ring. As each point is defined a red "+" is added to the plot
+  ([https://subversion.xor.aps.anl.gov/trac/pyGSAS/attachment/wiki/DemoIntegrateTilted/d1w5.jpg view]).  
 
- To remove a point added in error click on that point with the right mouse button [on the Mac, if you have a single-button mouse, hold the Command (⌘) key down and click]. 
+  To remove a point added in error click on that point with the right mouse button [on the Mac, if you have a single-button mouse, hold the Command (⌘) key down and click]. 
+
+ Fourth:
+  When done, press the right mouse button well away from any points that have been added [on the Mac, if you have a single-button mouse, hold the Control key down and click].
+
+ The calibration is then performed. First the rings are located and an ellipse is optimized for each ring. The center of each ellipse is noted with a blue "+". The derived calibration results are shown in the Image Controls window.
+
+ To see the actual points selected by the program, click on the "show ring picks?" check button. When this is done, it becomes clear that the points selected for the outermost ring are scattered between that and the next ring. This can be repaired by using the Image Operations/Clear Calibration menu item, lowering the area the program uses for searching for points by changing the "pixel search range" to 10 and then repeating the calibration steps (selecting points again on the first ring and then using the right mouse button.) This produces very slightly better calibration constants. 
+
+