Re #9579. Added Usage section to ChangeBinOffset doc

Code/Mantid/docs/source/algorithms/ChangeBinOffset-v1.rst

@@ -20,4 +20,32 @@ selectively using the IndexMin and IndexMax properties.
 The output workspace will be an exact copy of the input workspace except
 for the changed time bins.
 
+Usage
+-----
+
+.. testcode:: ExOffset
+
+  import numpy as np
+
+  # Create a workspace
+  ws = CreateSampleWorkspace()
+
+  # Offset the time bins by 1.0
+  wsOffset = ChangeBinOffset(ws,Offset=1.0)
+
+  # Check the offset
+  x1 = ws.readX(0)
+  x2 = wsOffset.readX(0)
+  # Test that all elements of arrays x2 and x1 differ by 1.0
+  print np.all( x2 - x1 == 1.0 )
+  y1 = ws.readY(0)
+  y2 = wsOffset.readY(0)
+  # Test that arrays y2 and y1 are equal
+  print np.all( y2 == y1 )
+
+.. testoutput:: ExOffset
+
+  True
+  True
+
 .. categories::

Code/Mantid/docs/source/algorithms/SplineBackground-v1.rst

@@ -22,19 +22,26 @@ Usage
   import numpy as np
 
   # Create a workspace with some data
+
+  # Fill array x with 100 float values equally spaced in the interval [-10, 10]
   x = np.linspace(-10,10,100)
+  # Fill array y with values of a function for each number in array x. y has the same length as x
   y = 1.0 / (x**2 + 10)
+  # Create array e of the same length as x and fill it with ones (1.0)
   e = np.ones_like(x)
+  # Uses the above arrays to create a workspace
   ws = CreateWorkspace( x, y, e )
 
   # Run algorithm with low number of spline coefficients
   out = SplineBackground(ws, WorkspaceIndex=0, NCoeff=4)
   yout = out.readY(0)
+  # Sum the squares of the differences of elements of arrays y and yout
   print 'Fit quality is',np.sum( (y - yout)**2 )
 
   # Increase the number of spline coefficients
   out = SplineBackground(ws, WorkspaceIndex=0, NCoeff=20)
   yout = out.readY(0)
+  # Sum the squares of the differences of elements of arrays y and yout
   print 'Fit quality is',np.sum( (y - yout)**2 )
 
 .. testoutput:: ExampleSpline