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dev:data_functions [2020/07/21 07:38] – created sudev:data_functions [2022/08/19 10:42] (current) su
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 Some historians (such as our own, and OSIsoft PI) also support functions to compute e.g. the number of raw samples that were recorded in a given time interval, the percentage of recorded values that have good-quality status, and so on. Our current driver model does not provide a way of discovering which functions are available on a given data source, but we hope to add this in the future to make requesting processed data a little bit easier. Some historians (such as our own, and OSIsoft PI) also support functions to compute e.g. the number of raw samples that were recorded in a given time interval, the percentage of recorded values that have good-quality status, and so on. Our current driver model does not provide a way of discovering which functions are available on a given data source, but we hope to add this in the future to make requesting processed data a little bit easier.
 +
 +=====Example of function differences on Trend=====
 +
 +In this example, we are looking at our office temperature over a week, with interval set to a 1 hour period.
 +
 +====Plot====
 +
 +{{:dev:trend_-_plot.png?900|}}
 +
 +====Interp====
 +
 +{{:dev:trend_-_interp.png?900|}}
 +
 +====Min====
 +
 +{{:dev:trend_-_min.png?900|}}
 +
 +====Max====
 +
 +{{:dev:trend_-_max.png?900|}}
 +
 +====Avg====
 +
 +{{:dev:trend_-_avg.png?900|}}
 +
  
dev/data_functions.1595317128.txt.gz · Last modified: 2020/07/21 07:38 by su