Creating Link Graphs From DITA Maps

It may be sometimes useful as an overview to obtain a graphical visualization of how your
DITA topics refer to each other. The VisJS Javascript library can be used to construct node network
diagrams. Here’s how you can use it for your DITA project:

1. Open the main DITA Map in the Oxygen XML Editor DITA Maps Manager
   view, use the Configure Transformation Scenarios button, then
   create a new transformation scenario of type DITA OT
   Transformation choosing the Merge DITA Content to Single XML
   file transformation type. If you are not using Oxygen XML Editor you
   can download and install the dita-merge plugin separately
   from Github.
2. Apply the new transformation scenario on the DITA Map, once the merged XML document
   is generated, create another transformation scenario of type XML
   transformation with XSLT and transform to HTML using the XSLT
   stylesheet: https://github.com/oxygenxml/dita-merged/blob/master/possible-applications/createHTMLVisGraph.xsl
3. Open the result HTML document in a web browser. Depending on the complexity of the DITA
   project it may take some time for the diagram to show up. As an example the related
   links section below contains a reference to a diagram representation of the Oxygen
   XML Blog. If we regard the diagram as a circle, on the outer bounds of the circle
   are topics which have few incoming and outgoing links and in the center topics which
   have many outgoing and incoming links. Links from the DITA Map to the topics are not
   taken into account. You can interact with the diagram by dragging nodes and by using
   the mouse wheel to zoom in or out.