Aggregates: Largest Groups

From: David Fetter <david_at_fetter.org>
Date: Mon, 22 Mar 2010 15:42:09 -0500
Message-ID: <pbydnfHTA4G8SzrWnZ2dnUVZ_vidnZ2d_at_speakeasy.net>


Hello,

Let's say I have a traffic monitoring system. The stream of data coming in records a timestamp and a speed for each vehicle.

I'd like to know what all the groups of vehicles larger than X whose with average speed over Y is.

Any ideas how to approach this?

Cheers,
David

-- 
David Fetter <david_at_fetter.org> http://fetter.org/
Phone: +1 415 235 3778  AIM: dfetter666  Yahoo!: dfetter
Skype: davidfetter      XMPP: david.fetter_at_gmail.com

Build it, and they will come^Hplain.
Received on Mon Mar 22 2010 - 15:42:09 CDT

Original text of this message