Understanding and aggregating data from JSON files

Question

Understanding and aggregating data from JSON files

I am in possession of a group of json values outlined below

{"labels":[ "time", "softirq", "user", "system", "nice", "iowait" ], "data":[ [ 1490088352, 0, 14.64646, 3.53535, 0, 1.0101 ], [ 1490088351, 0, 27.77778, 3.0303, 0, 0 ], [ 1490088350, 0.49751, 12.93532, 2.98508, 0, 4.47761 ] }

My aim is to analyze this json file. I intend to add up the values for

{ "softirq", "user", "system", "nice", "iowait"}

labels and store them in a separate variable named "sum". The anticipated output should resemble the following:

{ "time" : 1490088352 , "sum": "the calculated total value "}
{"time" : 1490088351 , "sum": "the calculated total value "}
{"time" : 1490088350 , "sum": "the calculated total value "}

If anyone could provide assistance with this query, it would be greatly appreciated.

javascript json

Answer 1

Answer №1

Utilize the Array#reduce method to condense an array into a single value

Array.slice(1) can be used to retrieve an array without the first element

var data = {
  "labels": ["time", "softirq", "user", "system", "nice", "iowait"],
  "data": [
    [1490088352, 0, 14.64646, 3.53535, 0, 1.0101],
    [1490088351, 0, 27.77778, 3.0303, 0, 0],
    [1490088350, 0.49751, 12.93532, 2.98508, 0, 4.47761]
  ]
};
var op = [];
data.data.forEach(function(el) {
  var obj = {
    time: el[0]
  };
  obj.sum = el.slice(1).reduce(function(a, b) {
    return a + b;
  });
  op.push(obj);
});
console.log(op);

Answer 2

Utilize the Array#reduce method to condense an array into a single value

Array.slice(1) can be used to retrieve an array without the first element

var data = {
  "labels": ["time", "softirq", "user", "system", "nice", "iowait"],
  "data": [
    [1490088352, 0, 14.64646, 3.53535, 0, 1.0101],
    [1490088351, 0, 27.77778, 3.0303, 0, 0],
    [1490088350, 0.49751, 12.93532, 2.98508, 0, 4.47761]
  ]
};
var op = [];
data.data.forEach(function(el) {
  var obj = {
    time: el[0]
  };
  obj.sum = el.slice(1).reduce(function(a, b) {
    return a + b;
  });
  op.push(obj);
});
console.log(op);

Answer 3

Answer №2

Let's start by loading the data:

var info = {
  "keys": ["timestamp", "task1", "task2", "task3", "task4", "task5"],
  "dataValues": [
    [1490088352, 0, 14.64646, 3.53535, 0, 1.0101],
    [1490088351, 0, 27.77778, 3.0303, 0, 0],
    [1490088350, 0.49751, 12.93532, 2.98508, 0, 4.47761]
  ]
};

Next step is to compute the sum of tasks:

var updatedInfo = info.dataValues.map(function(task){return {"timestamp":task[0], "total": task.splice(1, task.length).reduce((a, b) => a + b, 0)};});

Answer 4

Let's start by loading the data:

var info = {
  "keys": ["timestamp", "task1", "task2", "task3", "task4", "task5"],
  "dataValues": [
    [1490088352, 0, 14.64646, 3.53535, 0, 1.0101],
    [1490088351, 0, 27.77778, 3.0303, 0, 0],
    [1490088350, 0.49751, 12.93532, 2.98508, 0, 4.47761]
  ]
};

Next step is to compute the sum of tasks:

var updatedInfo = info.dataValues.map(function(task){return {"timestamp":task[0], "total": task.splice(1, task.length).reduce((a, b) => a + b, 0)};});

Answer 5

Answer №3

    var info = {
  "categories": ["timestamp", "softirq", "user", "system", "nice", "iowait"],
  "values": [
    [1490088352, 0, 14.64646, 3.53535, 0, 1.0101],
    [1490088351, 0, 27.77778, 3.0303, 0, 0],
    [1490088350, 0.49751, 12.93532, 2.98508, 0, 4.47761]
  ]
};

var dataValues = info.values;

var processedData = [];
var individualData={};

for(var k in dataValues){
  total=0;
  individualData={};
  for(var m=1,n=dataValues[k].length;m<n;m++ ){
    total+=dataValues[k][m];
  }

  individualData.timestamp=dataValues[k][0];
  individualData.total=total;
  processedData.push(individualData);

  console.log(processedData);
}

Answer 6

    var info = {
  "categories": ["timestamp", "softirq", "user", "system", "nice", "iowait"],
  "values": [
    [1490088352, 0, 14.64646, 3.53535, 0, 1.0101],
    [1490088351, 0, 27.77778, 3.0303, 0, 0],
    [1490088350, 0.49751, 12.93532, 2.98508, 0, 4.47761]
  ]
};

var dataValues = info.values;

var processedData = [];
var individualData={};

for(var k in dataValues){
  total=0;
  individualData={};
  for(var m=1,n=dataValues[k].length;m<n;m++ ){
    total+=dataValues[k][m];
  }

  individualData.timestamp=dataValues[k][0];
  individualData.total=total;
  processedData.push(individualData);

  console.log(processedData);
}

Answer 7

Answer №4


var array = {"labels":[ "time", "softirq", "user", "system", "nice", "iowait" ], "data":[ [ 1490088352, 0, 14.64646, 3.53535, 0, 1.0101 ], [ 1490088351, 0, 27.77778, 3.0303, 0, 0 ], [ 1490088350, 0.49751, 12.93532, 2.98508, 0, 4.47761 ]] };
var output = [];
for(var i = 0; i < array.data.length; i++){
    var object = {};
    object.time = array.data[i][0];
    object.sum = 0;
    for(var j = 1; j < array.data[i].length; j++){
        object.sum += array.data[i][j];
    }
    output.push(object);
}
console.log(output);

Answer 8


var array = {"labels":[ "time", "softirq", "user", "system", "nice", "iowait" ], "data":[ [ 1490088352, 0, 14.64646, 3.53535, 0, 1.0101 ], [ 1490088351, 0, 27.77778, 3.0303, 0, 0 ], [ 1490088350, 0.49751, 12.93532, 2.98508, 0, 4.47761 ]] };
var output = [];
for(var i = 0; i < array.data.length; i++){
    var object = {};
    object.time = array.data[i][0];
    object.sum = 0;
    for(var j = 1; j < array.data[i].length; j++){
        object.sum += array.data[i][j];
    }
    output.push(object);
}
console.log(output);

Answer 9

Answer №5

If you want to calculate sums based on specific labels and group them by time, one approach could be to utilize an array for the labels you are interested in and a hash table for grouping by time.

var data = { "labels": ["time", "softirq", "user", "system", "nice", "iowait"], "data": [[1490088352, 0, 14.64646, 3.53535, 0, 1.0101], [1490088351, 0, 27.77778, 3.0303, 0, 0], [1490088350, 0.49751, 12.93532, 2.98508, 0, 4.47761]] },
    labels = ["softirq", "user", "system", "nice", "iowait"],
    result = data.data.reduce(function (hash) {
        return function (r, a) {
            if (!hash[a[0]]) {
                hash[a[0]] = { time: a[0], sum: 0 };
                r.push(hash[a[0]]);
            }
            hash[a[0]].sum += labels.reduce(function (r, l) { return r + (a[data.labels.indexOf(l)] || 0); }, 0);
            return r;
        };
    }(Object.create(null)),[]);

console.log(result);

.as-console-wrapper { max-height: 100% !important; top: 0; }

Answer 10

If you want to calculate sums based on specific labels and group them by time, one approach could be to utilize an array for the labels you are interested in and a hash table for grouping by time.

var data = { "labels": ["time", "softirq", "user", "system", "nice", "iowait"], "data": [[1490088352, 0, 14.64646, 3.53535, 0, 1.0101], [1490088351, 0, 27.77778, 3.0303, 0, 0], [1490088350, 0.49751, 12.93532, 2.98508, 0, 4.47761]] },
    labels = ["softirq", "user", "system", "nice", "iowait"],
    result = data.data.reduce(function (hash) {
        return function (r, a) {
            if (!hash[a[0]]) {
                hash[a[0]] = { time: a[0], sum: 0 };
                r.push(hash[a[0]]);
            }
            hash[a[0]].sum += labels.reduce(function (r, l) { return r + (a[data.labels.indexOf(l)] || 0); }, 0);
            return r;
        };
    }(Object.create(null)),[]);

console.log(result);

.as-console-wrapper { max-height: 100% !important; top: 0; }

Answer 11

Answer №6

    var data = {
      "labels": ["time", "softirq", "user", "system", "nice", "iowait"],
      "data": [
        [1490088352, 0, 14.64646, 3.53535, 0, 1.0101],
        [1490088351, 0, 27.77778, 3.0303, 0, 0],
        [1490088350, 0.49751, 12.93532, 2.98508, 0, 4.47761]
      ]
    };
    var processedData = [];
for(var x = 0; x < data.data.length; x++){
  var jsonData = {"time" : data.data[x][0], "sum" : 0}
  for(var y = 1; y < data.data[x].length; y++){
        jsonData.sum += data.data[x][y];
  }
   processedData.push(jsonData)
}
console.log(processedData)

Answer 12

    var data = {
      "labels": ["time", "softirq", "user", "system", "nice", "iowait"],
      "data": [
        [1490088352, 0, 14.64646, 3.53535, 0, 1.0101],
        [1490088351, 0, 27.77778, 3.0303, 0, 0],
        [1490088350, 0.49751, 12.93532, 2.98508, 0, 4.47761]
      ]
    };
    var processedData = [];
for(var x = 0; x < data.data.length; x++){
  var jsonData = {"time" : data.data[x][0], "sum" : 0}
  for(var y = 1; y < data.data[x].length; y++){
        jsonData.sum += data.data[x][y];
  }
   processedData.push(jsonData)
}
console.log(processedData)

Understanding and aggregating data from JSON files

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

Answer №6

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