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[Nicholas Leskiw <question172502@xxxxxxxxxxxxxxxxxxxxx>]

Question #172502 on Graphite changed:
https://answers.launchpad.net/graphite/+question/172502

    Status: Open => Answered

Nicholas Leskiw proposed the following answer:
There are integral, nonNegativeDerivative and summarize functions.

integral adds all previous data points to the value.

so if the my.metric.data is 5,6,7,5,4,2,1,1,1,4,5 
integral(my.metric.data) would graph
5,11,18,23,27,29,30,31,32,36,41

derivative(my.metric.data) is the opposite, turns 
5,11,18,23,27,29,30,31,32,36,41
back into 
5,6,7,5,4,2,1,1,1,4,5 

summarize(metric,timePeriod) groups the datapoints into buckets.

for example, 5,6,7,5,4,2,1,1,1,4,5 (assuming each was 1 minute / datapoint)
summarize(my.metric.data,"2min")
would graph 
11,12,6,2,5,5

Hope this helps.

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