In particular, I'm trying to do a percentage calculation by querying against the same index twice(once for the numerator and once for the denominator). I didn't see percentage function only a moving average one in Timelion.
@Steve_Suh I've moved your question to the Kibana forum as it's specific to the Timelion plugin for Kibana.
I got my query running locally in Timelion but I'm still curious if we can add our own functions on the hosted version