influxdb/influxdb — pull request #696 by dgnorton (2014-06-26 13:07:53+00:00)
Title: #659 - Add math and trig functions

This change adds FuncAggregator, which does most of the work for
applying a function to each point in a select query. To demo this,
three new aggregators have also been added which use the
FuncAggregator: log10, pow, and tolower. Example uses:

select log10(val) from myseries

select pow(val, 2) from myseries

select tolower(email) from myseries