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Wire up DERIVATIVE aggregate #1822
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so where is derivative? |
+1 or is there another way to access to derivative/speed on data ? |
I am using rc25 and I don't see the derivative function. Get the following error: |
@anandmani-lab49 -- keep an eye on this ticket. Once the functions are implemented, this ticket will be closed. |
Calculates the derivative of consequtive points and normalizes the value to a given interval. It supports simple derivates over fields as well as nested derivatives over another aggregate function. Fixes #1822
If the query is like this:
It will compute the rate of change between each data point.
If the query is like this:
It will take the rate of change of the mean of 5 minute buckets of time.
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