# Tag historian query for mathematical

**URL:** <https://forum.inductiveautomation.com/t/tag-historian-query-for-mathematical/15670>\
**Category:** Ignition\
**Tags:** ignition79\
**Created:** [October 15, 2017, 7:55am UTC](https://forum.inductiveautomation.com/t/tag-historian-query-for-mathematical/15670 "2017-10-15T07:55:02Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![lyhkch](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/lyhkch/32/9381_2.png) [@lyhkch](https://forum.inductiveautomation.com/u/lyhkch)\
**Post date:** [October 15, 2017, 7:55am UTC](https://forum.inductiveautomation.com/t/tag-historian-query-for-mathematical/15670/1 "2017-10-15T07:55:03Z")

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I use the tag historian query in the report, get some history data.  
How to use these data for mathematical operations, logical judgments and so on

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**Author:** ![lyhkch](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/lyhkch/32/9381_2.png) [@lyhkch](https://forum.inductiveautomation.com/u/lyhkch)\
**Post date:** [October 17, 2017, 5:53pm UTC](https://forum.inductiveautomation.com/t/tag-historian-query-for-mathematical/15670/2 "2017-10-17T17:53:57Z")

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anyone know this quest ? help !