Work on LoadIDFFromNexus-v1.rst re #9567

Signed-off-by: Karl Palmen <karl.palmen@stfc.ac.uk>

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

@@ -14,4 +14,36 @@ the instrument from this definition. You may need to tell this algorithm
 where in the Nexus file to find the Instrument folder, which contains
 the instrument definition.
 
+
+Usage
+-----
+** Example - Load an IDF with differently named component **
+
+.. testcode:: ExLoadIDFFromnNexusSimple
+
+   result = Load("MUSR00015189")
+   group = result[0]
+   ws_1 = group[0]
+   ws_2 = group[1]
+
+   # musr_with_namechange.nxs has component named 'the rings' instead of 'both rings')
+   LoadIDFFromNexus(ws_1, "musr_with_namechange.nxs","/mantid_workspace_1")
+
+   # This workspace had the IDF loaded into it, so getting component renamed to "the rings".
+   inst1 = ws_1.getInstrument()
+   comp1 = inst1.getComponentByName("the rings")
+   print "Modified component name =", comp1.getName()
+
+   # This workspace had no IDF loaded into it, so still has component named to "both rings".
+   inst2 = ws_2.getInstrument()
+   comp2 = inst2.getComponentByName("both rings")
+   print "Unmodified component name =", comp2.getName()
+
+Output:
+
+.. testoutput:: ExLoadIDFFromnNexusSimple
+
+   Modified component name = the rings
+   Unmodified component name = both rings
+
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