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A function node for Node-RED that assembles data from WoTKit to create an HTTP request.
// Return an error if data is empty.
if (msg.payload.length === 0){
msg.payload = {"error":"no data found"};
return msg;
// Get the values as an array
var values = []
var sensors = []{
if (sensors.indexOf(element.sensor_name) == -1 && element.sensor_name !== null)
// Compute the average
var average = values.reduce(function(previous, current, index, array) {
return previous + current;
}) / values.length;
// Assemble response and return
msg.payload = {'average_value': average, 'sensors_parsed':sensors, 'data_points' : values.length }
return msg;
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