Javascript D3.js与.csv一起出现问题-错误：无效的<；路径>；属性d="；M499.99730980162605187.54702784048158L499.99731009247085，

我正在做一个基于d3.js的图表，我收到一个

“错误：属性的值无效：d=”M499.99730980162605187.54702784048158L499.99731009247085，…”

我正在尝试以.csv格式绘制循环数据图表

record,5,timestamp,positionlat,positionlong,distance,altitude,speed,temperature
data,5,2015-05-25 18:33:19,467885825,"-1,275,710,534",8.25,"2,402.6",7.976,20
data,5,2015-05-25 18:33:24,467886510,"-1,275,704,356",53.3,"2,402.6",9.552,19
data,5,2015-05-25 18:33:25,467886903,"-1,275,703,091",63.16,"2,402.6",9.581,19
data,5,2015-05-25 18:33:27,467887866,"-1,275,700,622",83.15,"2,402.6",9.69,19
data,5,2015-05-25 18:33:30,467889786,"-1,275,696,923",115.37,"2,394.2",10.064,19
data,5,2015-05-25 18:33:32,467891098,"-1,275,694,820",134.88,"2,394.2",9.715,19
data,5,2015-05-25 18:33:34,467892345,"-1,275,692,669",154.28,"2,394.2",9.588,19
data,5,2015-05-25 18:33:36,467893324,"-1,275,690,252",174,"2,394.2",9.825,19

这是密码

d3.csv(activityFile.url(), function(d){

    return {
        timestamp : new Date(d.timestamp),
        speed : +d.speed,
        altitude : +d.altitude.replace(/\,/g,''),
        distance : +d.distance.replace(/\,/g,''),
        //timeDone : parseDate(d.timestamp)
    };

    function sortByDateAscending(a, b) {
        // Dates will be cast to numbers automagically:
        return a.timestamp - b.timestamp;
    }

    data = data.sort(sortByDateAscending);

},function(data) {

    maxTime = d3.max(data, function(d) { return d.timestamp;} );
    maxAlt = d3.max(data, function(d) { return d.altitude;} );
    maxSpeed = d3.max(data, function(d) { return d.speed;} );

    //timeDone = parseDate(d.timestamp);

    console.log(maxAlt);
    console.log(maxTime);
    console.log(maxSpeed);

    var chart = d3.select("body").append("svg")
        .attr("class", "chart")
        .attr("id", "theChart")
        .attr("width", chartRowWidth)
        .attr("height", chartRowWidth/aspect);

    var xScale = d3.scale.linear()
                     .domain([0, maxTime])
                     .range([0, chartRowWidth]);

    var yScale = d3.scale.linear()
                     .domain([0, maxSpeed])
                     .range([0, chartRowWidth/aspect]);

    var area = d3.svg.area()
        .interpolate("basis")
        .x(function(d)  {  return xScale(d.timestamp); })
        .y(function(d) {  return yScale(d.speed); });


    chart.append("path")
        .attr("class", "area")
        .attr("d", area(data));  //around here

}); 

谢谢，我收到了“渴望最后一行”的错误。我真的不明白我为什么会有这个问题

旁注，由于某种原因，maxAlt值实际上一直在返回最大positionlat值。我也不知道为什么会发生这种情况

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谢谢

您的比例可能有误。域的底端是0。您可能希望底端是最早的日期和最低速度。我本来打算这样做的，因为与它们的变化相比，这些值太大了。我还没有到达那里。