chartjs 차트의 값을 동적으로 업데이트

chartjs를 사용하여 기본 막대 차트를 만들었으며 정상적으로 작동합니다. 이제 시간 기반 간격으로 값을 업데이트하고 싶습니다. 내 문제는 차트를 만든 후에 값을 올바르게 업데이트하는 방법을 모른다는 것입니다.

내 코드 :

var ctx = $("#myChart").get(0).getContext("2d");

var dts = [
    {
        fillColor: "rgba(220,220,220,0.5)",
        strokeColor: "rgba(220,220,220,1)",
        data: [0, 0, 0, 0, 0]
    }
];

var data = {
    labels: ["Core#1", "Core#2", "Core#3", "Core#4", "Total"],
    datasets: dts
};

var chart = new Chart(ctx);
chart.Bar(data);

//test code
setInterval( function () {                        
    data.datasets[0].data = [random(), random(), random(), random(), random()];
    chart.Bar(data);

},2000);

테스트 코드에서 값을 업데이트하고 있습니다. datasets[0].data이것이 올바른 방법입니까? 이 문제는 내가 호출 할 때마다 chart.Bar()값이 0으로 재설정 된 다음 임의의 값으로 애니메이션됩니다 (차트를 다시 작성하는 것처럼). 이런 식으로 모든 애니메이션은 항상 0에서 값까지이며 이상하게 보입니다. 50에서 10으로 값을 업데이트하면 막대가 50에서 10으로 내려가 0으로 설정되지 않고 10으로 애니메이션화됩니다.

나는 이것에 대해 문서에서 아무것도 발견하지 못했습니다 ... 내가 잘못하고 있습니까?이 라이브러리에서는 불가능합니까?

업데이트 : chartjs가 업데이트 된 것 같습니다 (아래 주석 참조). 매우 멋지게 보이는 몇 가지 예가 있습니다.

1. 다음은 새로운 데이터를 사용하여 꺾은 선형 차트를 업데이트하는 예입니다. http://jsbin.com/yitep/5/edit
2. 꺾은 선형 차트에서 기존 데이터를 업데이트하는 방법은 다음과 같습니다. http://jsbin.com/yitep/4/edit

원본 게시물

2013 년 11 월 현재 차트 업데이트 옵션이 거의없는 것 같습니다.

꺾은 선형 차트에 새 점을 추가 하는 좋은 예가 있습니다 (아래에 복제 됨). 아직도 종류의 험악하지만 너무 나쁘지는 않습니다. 그러나 효과는 아마도 사용중인 차트에 달려 있다고 생각합니다.

이것이 개발 파이프 라인의 어딘가에있는 것처럼 보입니다. 아직 릴리스 날짜가 표시되지 않습니다 : https://github.com/nnnick/Chart.js/issues/13 [2014 년 7 월 26 일자로 마감]

JS

$(document).ready(function(){
  var count = 10;
  var data = {
      labels : ["1","2","3","4","5", "6", "7", "8", "9", "10"],
        datasets : [
          {
                fillColor : "rgba(220,220,220,0.5)",
                strokeColor : "rgba(220,220,220,1)",
                pointColor : "rgba(220,220,220,1)",
                pointStrokeColor : "#fff",
                data : [65,59,90,81,56,45,30,20,3,37]
            },
            {
                fillColor : "rgba(151,187,205,0.5)",
                strokeColor : "rgba(151,187,205,1)",
                pointColor : "rgba(151,187,205,1)",
                pointStrokeColor : "#fff",
                data : [28,48,40,19,96,87,66,97,92,85]
            }
        ]
  }
  // this is ugly, don't judge me
  var updateData = function(oldData){
    var labels = oldData["labels"];
    var dataSetA = oldData["datasets"][0]["data"];
    var dataSetB = oldData["datasets"][1]["data"];

    labels.shift();
    count++;
    labels.push(count.toString());
    var newDataA = dataSetA[9] + (20 - Math.floor(Math.random() * (41)));
    var newDataB = dataSetB[9] + (20 - Math.floor(Math.random() * (41)));
    dataSetA.push(newDataA);
    dataSetB.push(newDataB);
    dataSetA.shift();
    dataSetB.shift();    };

  var optionsAnimation = {
    //Boolean - If we want to override with a hard coded scale
    scaleOverride : true,
    //** Required if scaleOverride is true **
    //Number - The number of steps in a hard coded scale
    scaleSteps : 10,
    //Number - The value jump in the hard coded scale
    scaleStepWidth : 10,
    //Number - The scale starting value
    scaleStartValue : 0
  }

  // Not sure why the scaleOverride isn't working...
  var optionsNoAnimation = {
    animation : false,
    //Boolean - If we want to override with a hard coded scale
    scaleOverride : true,
    //** Required if scaleOverride is true **
    //Number - The number of steps in a hard coded scale
    scaleSteps : 20,
    //Number - The value jump in the hard coded scale
    scaleStepWidth : 10,
    //Number - The scale starting value
    scaleStartValue : 0
  }

  //Get the context of the canvas element we want to select
  var ctx = document.getElementById("myChart").getContext("2d");
  var optionsNoAnimation = {animation : false}
  var myNewChart = new Chart(ctx);
  myNewChart.Line(data, optionsAnimation);  

  setInterval(function(){
    updateData(data);
    myNewChart.Line(data, optionsNoAnimation)
    ;}, 2000
  );
});


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