Convert Arrays to Object in Angular - arrays

Question

I am creating a Line Chart with d3 in Angular 8.
I following some example with TEMPERATURES. But my API is getting following format.
Data from API
{
"status": 200,
"data": {
"dashboard_data": [
[
2014-04-01,
2920.0,
239.44000000000003
],
[
2014-04-02,
2260.0,
185.32000000000002
],
[
2014-04-03,
156.0,
12.792
],
[
2014-04-04,
980.0,
80.36
],
[
2014-04-05,
1515.0,
124.22999999999999
],
],
}
}
Need data in this format
TEMPERATURES = [
{
'values': [
{'date': new Date('2012-09-05'), 'temperature': 77.7},
{'date': new Date('2012-09-06'), 'temperature': 74.2},
{'date': new Date('2012-09-07'), 'temperature': 76.0},
]
},
];
I am looking for solution, how I convert dashboard_data with values?
TIA

Answer 1

Try like this:
TEMPERATURES = [];
constructor() {
let obj = {};
obj["values"] = this.input.data.dashboard_data.map(item => ({
date: new Date(item[0]),
temperature : item[2]
}))
this.TEMPERATURES.push(obj)
}
Working Demo

Answer 2

It is not clear how to convert temperature. However, you can try the following approach:
let temperatures = [];
const result = obj.data.dashboard_data
.map(([d, h, t]) => ({date: new Date(d), temperature: t}));
temperatures.push({values: result});
An example:
let obj = {
"status": 200,
"data":
{
"dashboard_data": [
[
2014 - 04 - 01,
2920.0,
239.44000000000003
],
[
2014 - 04 - 02,
2260.0,
185.32000000000002
],
[
2014 - 04 - 03,
156.0,
12.792
],
[
2014 - 04 - 04,
980.0,
80.36
],
[
2014 - 04 - 05,
1515.0,
124.22999999999999
],
]
}
};
let temperatures = [];
const result = obj.data.dashboard_data
.map(([d, h, t]) => ({date: new Date(d), temperature: t}));
temperatures.push({values: result});
console.log(temperatures);

Answer 3

You have to iterate over each item in dashboard_data array and then pick date and temperature from it and push it to TEMPERATURE array:
dashboard_data.forEach((item)=>{
TEMPERATURES.push({'date': new Date(item[0]), 'temperature': item[2]});
}
)
let dashboard_data = [
[
'2014-04-01',
2920.0,
239.44000000000003
],
[
'2014-04-02',
2260.0,
185.32000000000002
],
[
'2014-04-03',
156.0,
12.792
],
[
'2014-04-04',
980.0,
80.36
],
[
'2014-04-05',
1515.0,
124.22999999999999
],
]
let TEMPERATURES = [];
dashboard_data.forEach((item)=>{
TEMPERATURES.push({'date': new Date(item[0]), 'temperature': item[2]});
}
)
console.log(TEMPERATURES);