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Use the API to query a set of tagged points for rollups over a time period

  • Someone recently asked over the phone for the pure JavaScript example of getting a set of point values through the API based on tags. The solution (currently) is to query the data points first, then compose a list to submit to the point-values endpoint, like,

    var token = "Token auth!";
    var baseUrl = 'http://localhost:8082/rest';
    function newHttpRequest(method, url, headers) {
    	var http = new XMLHttpRequest();, url, true);
    	http.setRequestHeader("Accept", "application/json")
    	http.setRequestHeader("Authorization", "Bearer " + token)
    	if(headers != null) {
    		for(var header in headers)
    			http.setRequestHeader(header, headers[header]);
    	return http;
    valuesRequestBody = {
      "dateTimeFormat": "YYYY-MM-dd'T'HH:mm:ss.SSSZ",
      "fields": [
      "from": "2018-10-16T18:43:20.111Z",
      "limit": 1000,
      "timePeriod": {
        "periods": 1,
        "type": "HOURS"
      "timezone": "America/Denver",
      "to": "2018-10-19T18:43:20.111Z",
      "truncate": true,
      "xids": [
    getDataPoints = newHttpRequest('GET', baseUrl + '/v2/data-points?eq(tags.device,example)&limit(100)', null);
    getDataPoints.onreadystatechange  = function() {
    	if (getDataPoints.readyState == XMLHttpRequest.DONE) {
    		var dataPoints = JSON.parse(this.responseText).items;
    		var dpXids = []
    		for(var k = 0; k < dataPoints.length; k+=1)
    		valuesRequestBody.xids = dpXids;
    getPointValues = newHttpRequest('POST', baseUrl + '/v2/point-values/multiple-arrays/time-period/ALL', {"Content-Type": "application/json"});
    getPointValues.onreadystatechange  = function() {
    	if (getPointValues.readyState == XMLHttpRequest.DONE) {
    		//var response = JSON.parse(getPointValues.responseText); //Then do stuff

    This JavaScript will query the data points for up to 100 with the device tag 'example' and then request up to 1000 values for each (because it's a multiple arrays, single arrays the limit applies to all), where a 'value' in this context is a one hour rollup of ALL statistics options.