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How to sum and average several data points
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I would like to know how I can add and average several data points, that is, I want to average several temperatures and show them in a gauge as the general temperature of the building
Thank you very much -
Hi maikel8a,
If you don't want a history of it, you could select all the points with an ma-point-query, get their values with an ma-point-values and get the average with a
<ma-calc input="(points | maSum:'value') / points.length" output="pointAverage"></ma-calc>But, if you would like a history you should add these points into the context of a meta point, have it update on a cron (or one point from each data source) and compute the average there. That will have the advantage of being simply usable however any other data point would be.
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Thank you very much @phildunlap, I will try to prove with this what you tell me. What I need is just to show it.
Thanks again
