Find the below use of distance calculator author: Jayanta kumar panigrahi

let lat = 53.339428,lon = -6.257664; let radius =100;

var positions = [{"latitude": "52.986375", "user_id": 12, "name": "Christina McArdle", "longitude": "-6.043701"}, {"latitude": "51.92893", "user_id": 1, "name": "Alice Cahill", "longitude": "-10.27699"}, {"latitude": "51.8856167", "user_id": 2, "name": "Ian McArdle", "longitude": "-10.4240951"}, {"latitude": "52.3191841", "user_id": 3, "name": "Jack Enright", "longitude": "-8.5072391"}, {"latitude": "53.807778", "user_id": 28, "name": "Charlie Halligan", "longitude": "-7.714444"}, {"latitude": "53.4692815", "user_id": 7, "name": "Frank Kehoe", "longitude": "-9.436036"}, {"latitude": "54.0894797", "user_id": 8, "name": "Eoin Ahearn", "longitude": "-6.18671"}, {"latitude": "53.038056", "user_id": 26, "name": "Stephen McArdle", "longitude": "-7.653889"}, {"latitude": "54.1225", "user_id": 27, "name": "Enid Gallagher", "longitude": "-8.143333"}, {"latitude": "53.1229599", "user_id": 6, "name": "Theresa Enright", "longitude": "-6.2705202"}, {"latitude": "52.2559432", "user_id": 9, "name": "Jack Dempsey", "longitude": "-7.1048927"}, {"latitude": "52.240382", "user_id": 10, "name": "Georgina Gallagher", "longitude": "-6.972413"}, {"latitude": "53.2451022", "user_id": 4, "name": "Ian Kehoe", "longitude": "-6.238335"}, {"latitude": "53.1302756", "user_id": 5, "name": "Nora Dempsey", "longitude": "-6.2397222"}, {"latitude": "53.008769", "user_id": 11, "name": "Richard Finnegan", "longitude": "-6.1056711"}, {"latitude": "53.1489345", "user_id": 31, "name": "Alan Behan", "longitude": "-6.8422408"}, {"latitude": "53", "user_id": 13, "name": "Olive Ahearn", "longitude": "-7"}, {"latitude": "51.999447", "user_id": 14, "name": "Helen Cahill", "longitude": "-9.742744"}, {"latitude": "52.966", "user_id": 15, "name": "Michael Ahearn", "longitude": "-6.463"}, {"latitude": "52.366037", "user_id": 16, "name": "Ian Larkin", "longitude": "-8.179118"}, {"latitude": "54.180238", "user_id": 17, "name": "Patricia Cahill", "longitude": "-5.920898"}, {"latitude": "53.0033946", "user_id": 39, "name": "Lisa Ahearn", "longitude": "-6.3877505"}, {"latitude": "52.228056", "user_id": 18, "name": "Bob Larkin", "longitude": "-7.915833"}, {"latitude": "54.133333", "user_id": 24, "name": "Rose Enright", "longitude": "-6.433333"}, {"latitude": "55.033", "user_id": 19, "name": "Enid Cahill", "longitude": "-8.112"}, {"latitude": "53.521111", "user_id": 20, "name": "Enid Enright", "longitude": "-9.831111"}, {"latitude": "51.802", "user_id": 21, "name": "David Ahearn", "longitude": "-9.442"}, {"latitude": "54.374208", "user_id": 22, "name": "Charlie McArdle", "longitude": "-8.371639"}, {"latitude": "53.74452", "user_id": 29, "name": "Oliver Ahearn", "longitude": "-7.11167"}, {"latitude": "53.761389", "user_id": 30, "name": "Nick Enright", "longitude": "-7.2875"}, {"latitude": "54.080556", "user_id": 23, "name": "Eoin Gallagher", "longitude": "-6.361944"}, {"latitude": "52.833502", "user_id": 25, "name": "David Behan", "longitude": "-8.522366"}] var distancecalculator = require('distancecalculator'); console.log(" distancecalculator ", distancecalculator .filterPositionsByDistance(lat,lon,radius,positions))