[jira] [Commented] (EDGENT-246) Aggregate Function and Console

["Dale LaBossiere (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/EDGENT-246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15467923#comment-15467923 ] 

Dale LaBossiere commented on EDGENT-246:
----------------------------------------

Please use the edgent developers list for general questions: dev@edgent.apache.org

Have you looked at the SensorsAggregates sample?  Use of the Edgent Console only requires using the DevelopmentProvider.

Not sure why that use of aggregate() might cause a compile error - assuming you did the static imports for MIN,...

Note JsonAggregates.aggregate() only aggregates a single property in a JsonObject tuple.  Its 2nd and 3rd arguments are the property name to contain the aggregated **results** and the name of the property to aggregate respectively.

It seems you're trying to aggregate two properties: temp and voltage?


> Aggregate Function and Console
> ------------------------------
>
>                 Key: EDGENT-246
>                 URL: https://issues.apache.org/jira/browse/EDGENT-246
>             Project: Edgent
>          Issue Type: Task
>          Components: Analytics
>    Affects Versions: 0.4.0
>         Environment: Demonstration (Meetup)
>            Reporter: Brandon Swink
>             Fix For: 0.4.0
>
>
> I would like to use this function in a demo for my meetup in the next few weeks and my modification seems to have a compile error on the aggregate.  I would also like to couple it with the Edgent Console.  Do I need to modify this code to include the console or do I need to trigger using another component? 
> //*****CODE
>         // Create a window on the stream of the last 50 readings partitioned
>         //TWindow<JsonObject,JsonElement> sensorWindow = sensors.last(50, j -> j.get("ts"));
>         TWindow<JsonObject,Integer> sensorWindow = sensors.last(50, unpartitioned());
>         
>         // Aggregate the windows calculating the min, max, mean standard deviation and Slope across each window independently.
>        sensors = JsonAnalytics.aggregate(sensorWindow,"cpuTemperature","cpuVoltage", MIN, MAX, MEAN, STDDEV, SLOPE);



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