Hey groov fans…
Wanna grab some data from your groov in a batch? From any Device type? Here’s an example in Node-RED, but you could do something similar in your language of choice (anything that can grab a file via a URL and parse it).
I took this fancier example from @torchard to show how you can do a little Edge computing, or at perhaps Edgy?? 
In this example, we’re just doing a sum over one minute’s worth of data points. You could do an average or look for anomalies if you wanted.
Node-RED note: this is also a back-door way to get your groov Device tags (e.g. Modbus, OPC-UA, System, Simulation, or whatever you couldn’t normally access) via Node-RED, and least for reading/monitoring.
Since a trend of ANY device type has a API/endpoint/url for each pen, you can grab that data and have your way with it. (In this case, summing the last minute worth of data: 12 x 5 second samples.)
Don’t forget to sanity check your floating-point values, especially if you’re doing a sum as in this example, so as not to clobber your running total w/a NAN.
Note in the debug window to the right, you see my total, which is a pulse (on/off every 5 seconds for my total of 6 on=1 plus 6 off=0 for the 12 samples per minute).
Happy coding!
-Mary
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