It is stated in the documentation, that the Y-axis of a chart supports only 3 types of data:
I have an interval in seconds and would like to display it on axis Y in human-readable format.
Can I extend Splunk and introduce my own axis data type "duration"?
Is there any guidelines about it?
Here is my other question with the details and pictures of what I'm trying to achieve:
Displaying duration in human-readable format instead of seconds on chart by axis Y? on Splunk Answers
27 Mar '12, 09:23