dev:data_functions
Differences
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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. | ||
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+ | =====Example of function differences on Trend===== | ||
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+ | In this example, we are looking at our office temperature over a week, with interval set to a 1 hour period. | ||
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+ | ====Plot==== | ||
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+ | {{: | ||
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+ | ====Interp==== | ||
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+ | {{: | ||
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+ | ====Min==== | ||
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+ | {{: | ||
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+ | ====Max==== | ||
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+ | {{: | ||
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+ | ====Avg==== | ||
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+ | {{: | ||
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dev/data_functions.1595317128.txt.gz · Last modified: 2020/07/21 07:38 by su