I am working on ansys 17.2 apdl
To do this interactively you can use the Path Operations in General Postproc. See image below. You will use the define path to set the path by nodes or location, then the Map onto path to set the quantity to the path, and finally use Plot path items to make contour or graph.
The commands for these 3 main operations are
Let us know if this helps. Thank you
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