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How to correctly transform data for a stack chart chartJS (data transformation)?

There is data that comes from the server

  const groupedChartData = [
    {
      duration: '00:00:10',
      stats: [
        {color: 'red', reason: 'yes', value: 11},
        {color: 'green', reason: 'no', value: 33},
      ]
    },
    {
      duration: '00:01:00',
      stats: [
        {color: 'black', reason: 'call back', value: 32},
        {color: 'green', reason: 'no', value: 77},
      ]
    },
    {
      duration: '00:10:00',
      stats: [
        {color: 'red', reason: 'yes', value: 14},
      ]
    }
  ]

Based on the data from the server, you need to generate the following object for correct display data on the chart, that is, each first value from the stats object in groupedChartData must correspond
to the first in the next object, the second to the second, and

exprected result

let result = [
  {
    data: [11, 32, 14],
    backgroundColor: ['red', 'black', 'red']
  },
   {
    data: [33,77],
    backgroundColor: ['green', 'green']
  }
]

This transformation is necessary for me to form a chart of this kind in chartJS. Perhaps I am doing something wrong and such a complex transformation is not needed?
In any case, the essence of the question is how to bring 1 structure that I receive from the server to the one that I described in the expected result

about 4 years ago · Juan Pablo Isaza
1 Respuestas
Responde la pregunta

0

I hope the commented code below helps you:

const result = []

groupedChartData.forEach(el=>{
  el.stats.forEach((el, ind)=>{
    //checking if position is null
    if(result[ind] == null){
      result[ind] = {data:[], backgroundColor: []}
    }
    //pushing new values to the new array
    result[ind].data.push(el.value)
    result[ind].backgroundColor.push(el.color)
  })
})

console.log(result)
about 4 years ago · Juan Pablo Isaza Denunciar
Responde la pregunta
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