StreamInsight complex query with filter on HoppingWindow

Posted by hh354 on Stack Overflow See other posts from Stack Overflow or by hh354
Published on 2012-10-10T12:44:11Z Indexed on 2012/10/10 15:37 UTC
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LINQ

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query

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StreamInsight

I'm trying out StreamInsight and I came across a problem with a query I need.

I'm trying to throw a warning if there are several changes in my measured values (of up to 20% change) in the last 30 minutes.

This is the query I came up with for now but it isn't working and it's not even correct I think.

Apparently I can't filter on a window...?

var deviationQuery = from s in wcfStream
                     group s by s.SensorId into grouped
                     from window in grouped.HoppingWindow(TimeSpan.FromMinutes(30),TimeSpan.FromMinutes(1))
                     where window.StdDev(e => e.Value) > measurableValue * 1.2
                     select new OutputEvent
                     {
                         Error = "Deviation"
                     };

Thanks in advance!

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