primeNG uses chart.js as a chart, and a separate chart.js can use a mixed chart. I would like to ask primeNG how to use a mixed chart.
template

< p-chart type= "scatter" [data] = "data" [options] = "options" > < / p-chart >

I write as chart.js
but it shows only the points of the scattered graph, not the linear graph. Here is the code:

this.data = {
  datasets: [
    {
      label: "",
      data: [{x:1,y:5},{x:3,y:7},{x:8,y:10}],
      fill: false,
      borderColor: "-sharpfff"
    },
    {
      label: "",
      data: [{x:5,y:8},{x:3,y:7},{x:8,y:10}],
      fill: false,
      borderColor: "-sharpfff",

      type: "line"
    }
  ]
}
this.options = {
  responsive: false,
  title: {
    display: true,
    text: "",
    fontSize: 12
  },
  scales: {
    yAxes: [
      {
        scaleLabel: {
          display: true,
          labelString: "KKWH"
        },
        gridLines: {
          display: false
        }
      }
    ],
    xAxes: [
      {
        type: "linear",
        position: "bottom"
      }
    ]
  }
};