48 hours / 20 points = 2.4 hours per point = 144 minutes:

SELECT MEAN(temperature) FROM measurement WHERE time > now() - 2d GROUP BY
time(144m)

On Tue, Sep 6, 2016 at 11:22 AM, Michael Reed <[email protected]> wrote:

> I am logging temperature at 15 minute increments, and wish to chart the
> temperature between two dates.  Instead of charting thousands of data
> points, I wish to reduce the data between the two dates to 20 points where
> each of these points is the average for its time interval.  The two dates
> will be at least 24 hours apart.
>
> How can this be accomplished?
>
> Thank you
>
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-- 
Sean Beckett
Director of Support and Professional Services
InfluxDB

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