Add usage examples and documentation for CreateTransmissionWorkspace.

Refs #9774.

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

@@ -9,10 +9,89 @@
 Description
 -----------
 
-Creates a transmission run workspace given one or more TOF workspaces
-and the original run Workspace. If two workspaces are provided, then the
-workspaces are stitched together using :ref:`algm-Stitch1D`.
-InputWorkspaces must be in TOF. A single output workspace is generated
-with x-units of Wavlength in angstroms.
+Creates a transmission run workspace given one or two TOF workspaces,
+and the original run workspace. If two workspaces are provided, then the
+first workspace is considered a low wavelength transmission run, and the
+second workspace is considered a high wavelength transmission run.
+
+The two transmission run workspaces are converted to IvQ workspaces and
+then stitched together using :ref:`algm-Stitch1D`.
+Both input workspaces must have x-units of TOF.
+
+A single output workspace is generated with x-units of Wavelength in angstroms.
+
+In most cases you will want to use :ref:`algm-CreateTransmissionWorkspaceAuto`,
+which is a facade over this algorithm that correctly configures the input
+properties for you.
+
+Usage
+-----
+
+.. include:: ../usagedata-note.txt
+
+**Example - Create a transmission run**
+
+.. testcode:: ExCreateTransWSSimple
+
+    trans = Load(Filename='INTER00013463.nxs')
+    transWS = CreateTransmissionWorkspace(
+      FirstTransmissionRun = trans,
+      I0MonitorIndex = 2,
+      ProcessingInstructions = '3,4',
+      WavelengthMin = 1,
+      WavelengthMax = 17,
+      MonitorBackgroundWavelengthMin = 15,
+      MonitorBackgroundWavelengthMax = 17,
+      MonitorIntegrationWavelengthMin = 4,
+      MonitorIntegrationWavelengthMax = 10)
+
+    print "The first four transWS Y values are:"
+    for i in range (4):
+        print "%.4f" % transWS.readY(0)[i]
+
+Output:
+
+.. testoutput:: ExCreateTransWSSimple
+
+    The first four transWS Y values are:
+    0.0160
+    0.0348
+    0.0908
+    0.1187
+
+**Example - Create a transmission run from two runs**
+
+.. testcode:: ExCreateTransWSTwo
+
+    trans1 = Load(Filename='INTER00013463.nxs')
+    trans2 = Load(Filename='INTER00013464.nxs')
+    transWS = CreateTransmissionWorkspace(
+      FirstTransmissionRun = trans1,
+      SecondTransmissionRun = trans2,
+      Params = [1.5,0.02,17],
+      StartOverlap = 10.0,
+      EndOverlap = 12.0,
+      I0MonitorIndex = 2,
+      ProcessingInstructions = '3,4',
+      WavelengthMin = 1,
+      WavelengthMax = 17,
+      MonitorBackgroundWavelengthMin = 15,
+      MonitorBackgroundWavelengthMax = 17,
+      MonitorIntegrationWavelengthMin = 4,
+      MonitorIntegrationWavelengthMax = 10)
+
+    print "The first four transWS Y values are:"
+    for i in range (4):
+        print "%.4f" % transWS.readY(0)[i]
+
+Output:
+
+.. testoutput:: ExCreateTransWSTwo
+
+    The first four transWS Y values are:
+    0.0563
+    0.0564
+    0.0569
+    0.0582
 
 .. categories::