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Posted to notifications@iotdb.apache.org by "Steve Yurong Su (Jira)" <ji...@apache.org> on 2022/02/24 01:56:00 UTC

[jira] [Assigned] (IOTDB-2595) UDF: transform analogy quantity to on-off quantity

     [ https://issues.apache.org/jira/browse/IOTDB-2595?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steve Yurong Su reassigned IOTDB-2595:
--------------------------------------

    Assignee: Xi Zhang

> UDF: transform analogy quantity to on-off quantity
> --------------------------------------------------
>
>                 Key: IOTDB-2595
>                 URL: https://issues.apache.org/jira/browse/IOTDB-2595
>             Project: Apache IoTDB
>          Issue Type: Wish
>          Components: Core/Query
>            Reporter: Steve Yurong Su
>            Assignee: Xi Zhang
>            Priority: Major
>
> input: a time series (type: INT32, INT64, FLOAT or DOUBLE)
> output: a time series (type: BOOLEAN)
>  
> parameters：
> threshold (double)： if value >= threshold, output true, otherwise false
>  
> usage:
> select s1, f(s1, 'threshold'='1.5') from root.sg.d
>  
>  
> ||Time||root.sg.d.s1||f(root.sg.d.s1)||
> |1|1.2|false|
> |2|3.4|true|
> |3|5.6|true|
> |4|1.0|false|
>  
>  
>  



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