I have a number field that represents a time duration in seconds. I set this field as duration in an index pattern. My end users want to see the time duration in hh:mm:ss instead of number of seconds/minutes/hours. The human readable option does not have the required precision.
I think that a plugin can be developed to do this. Does anyone have any examples of how to do this? It is not clear to me how to add a formatter to core services.