Skip to main content

Aggregate values from array of JSON objects based on timestamp

I am relatively new to programming and javascript and i want to achieve the following. Let's assume that we have the following data:

let data =
  [
    {
      "time": 1663163352001,
      "state": "10"
    },
    {
      "time": 1663163352002,
      "state": "20"
    },
    {
      "time": 1663163354002,
      "state": "10"
    },
    {
      "time": 1663163354002,
      "state": "10"
    },
    {
      "time": 1663163355033,
      "state": "30"
    },
    {
      "time": 1663163355035,
      "state": "10"
    },
    {
      "time": 1663163397035,
      "state": "30"
    },
    {
      "time": 1663163397044,
      "state": "50"
    }

  ]

i want to aggregate and calculate the averaged state based on timestamps on time interval (let's say 1 second) so the output should be

let data =
  [
    {
      "time": 1663163352000,
      "state": "15"
    },
    {
      "time": 1663163353000,
      "state": "0"
    },
    {
      "time": 1663163354000,
      "state": "10"
    },
    {
      "time": 1663163355000,
      "state": "20"
    },
    {
      "time": 1663163356000,
      "state": "0"
    },
    {
      "time": 1663163397000,
      "state": "40"
    }

  ]

I know my code is not right but at this is the logic that i have already implement.

//Inputs
var t_interval = 1000;


let aggregatedValues = [];
let count = 0;
let sum = 0;
//starting point converted in seconds
t0 = data[0].time - data[0].time % 1000;
//the timewindow
t_win = t0 + t_interval;

//Just for this case 
for (let i = 0; i < 7; i++) {

  if ( data[i].time < t_win) {
    count += 1;
    sum += parseFloat(data[i].state);
  } 
  else{
    if (sum === 0 || count === 0) {
      avg = NaN;
    }
    avg = sum / count;
    count = 1;
    sum = parseFloat(data[i].state);

    let temp = {
      "time": t_win - t_interval,
      "state": avg
    }
    aggregatedValues.push(temp);
    t_win = t_win + t_interval;
  }
  
}

Could you help me please? Thank you!

Via Active questions tagged javascript - Stack Overflow https://ift.tt/yLSj5RX
Labels:

Comments

Post a Comment

Popular posts from this blog

Confusion between commands.Bot and discord.Client | Which one should I use?

Whenever you look at YouTube tutorials or code from this website there is a real variation. Some developers use client = discord.Client(intents=intents) while the others use bot = commands.Bot(command_prefix="something", intents=intents) . Now I know slightly about the difference but I get errors from different places from my code when I use either of them and its confusing. Especially since there has a few changes over the years in discord.py it is hard to find the real difference. I tried sticking to discord.Client then I found that there are more features in commands.Bot . Then I found errors when using commands.Bot . An example of this is: When I try to use commands.Bot client = commands.Bot(command_prefix=">",intents=intents) async def load(): for filename in os.listdir("./Cogs"): if filename.endswith(".py"): client.load_extension(f"Cogs.{filename[:-3]}") The above doesnt giveany response from my Cogs ...
Post a Comment
Read more

How to show number of registered users in Laravel based on usertype?

i'm trying to display data from the database in the admin dashboard i used this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count(); echo $users; ?> and i have successfully get the correct data from the database but what if i want to display a specific data for example in this user table there is "usertype" that specify if the user is normal user or admin i want to user the same code above but to display a specific usertype i tried this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count()->WHERE usertype =admin; echo $users; ?> but it didn't work, what am i doing wrong? source https://stackoverflow.com/questions/68199726/how-to-show-number-of-registered-users-in-laravel-based-on-usertype
Post a Comment
Read more

Why is my reports service not connecting?

I am trying to pull some data from a Postgres database using Node.js and node-postures but I can't figure out why my service isn't connecting. my routes/index.js file: const express = require('express'); const router = express.Router(); const ordersCountController = require('../controllers/ordersCountController'); const ordersController = require('../controllers/ordersController'); const weeklyReportsController = require('../controllers/weeklyReportsController'); router.get('/orders_count', ordersCountController); router.get('/orders', ordersController); router.get('/weekly_reports', weeklyReportsController); module.exports = router; My controllers/weeklyReportsController.js file: const weeklyReportsService = require('../services/weeklyReportsService'); const weeklyReportsController = async (req, res) => { try { const data = await weeklyReportsService; res.json({data}) console...
Post a Comment
Read more