I want to use my own d3 graphic in my dashboards in Splunk 6.4. How do I do this?
Good point! That's a better answer for 6.4. 🙂
See the Create a music dashboard tutorial on dev.splunk.com. Step 4 (http://dev.splunk.com/view/SP-CAAAEN6) shows you how to include a d3 visualization.