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Sum of a daily sum of a chart divided by another chart
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michael.iospa
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July 11, 2017 - 1:31 pm
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Hi All,

I have a channel with two charts, both measuring electrical power. Chart 1 mesures the input power of a device, while chart 2 measures the output power.

How could it be possible to present the daily efficiency of the device?

For the efficiency calculation I need to divide the daily sum of one chart by the other, how can I do it with ThingSpeak API?

 

Thanks!

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cstapels

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July 11, 2017 - 2:11 pm
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Use the Matlab analysis app.  If you follow the Getting Started Tutorial, it shows you how to create a visualization of dew point calculated from temperature and humidity, ad have it run on a regular schedule.  Use your input and output data to calculate the efficiency and then plot it in a similar way. The Act on your data section sows you how to use React to take action when your data reaches a threshold.  You can also use react to calculate the efficiency each time you put new data into the channel.

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