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I am unable to get data points on my graph. Both axis are zoomable and both are date ranges. More specifically, the x axis is the date and the y axis is the hour. I am wondering if it is something with my JSON file formatting with the hours but I am still unsure of why it is not plotting anything. An example of my JSON file is 

data = [ 
{ "date" : "2013-21-02T00:00:00",
  "vertical" : "2013-20-02T11:00:00"
},...]

Below is my code: 

//Define the min and max date 
   var mindate = new Date(2013,02,20),  // TODO: clip date  
       maxdate = new Date(2013,02,26);

//Define the range of hours for the yaxis. Uses military time. 
var ymindate = new Date(2013,02,20, 7),  // TODO: clip date 
    ymaxdate = new Date(2013,02,20, 17);

margin = { top: 20, right: 20, bottom: 20, left: 45};
width = 400 - margin.left - margin.right;
height = 200 - margin.top - margin.bottom;

var x = d3.time.scale()
    .domain([mindate, maxdate])
    .range([0, width]);

var y = d3.time.scale()
    .domain([ymindate, ymaxdate])
    .range([height, 0]);

var line = d3.svg.line()
    .x(function (d) { return d.date; })
    .y(function (d) { return d.vertical; });

var zoom = d3.behavior.zoom()
     .x(x)
    .y(y)
    .on("zoom", zoomed);

svg = d3.select('#chart')
    .append("svg:svg")
    .attr('width', width + margin.left + margin.right)
    .attr('height', height + margin.top + margin.bottom)
    .call(zoom)
    .append("svg:g")
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

var make_x_axis = function () {
    return d3.svg.axis()
        .scale(x)
        .orient("bottom")
        .ticks(5);
};

var make_y_axis = function () {
    return d3.svg.axis()
        .scale(y)
        .orient("left")
        .ticks(5);
};

var xAxis = d3.svg.axis()
    .scale(x)
    .orient("bottom")
    .ticks(5);

svg.append("svg:g")
    .attr("class", "x axis")
    .attr("transform", "translate(0, " + height + ")")
    .call(xAxis);

var yAxis = d3.svg.axis()
    .scale(y)
    .orient("left")
    .ticks(5);

svg.append("g")
    .attr("class", "y axis")
    .call(yAxis);

svg.append("g")
    .attr("class", "x grid")
    .attr("transform", "translate(0," + height + ")")
    .call(make_x_axis()
    .tickSize(-height, 0, 0)
    .tickFormat(""));

 svg.append("g")
    .attr("class", "y grid")
    .call(make_y_axis()
    .tickSize(-width, 0, 0)
   .tickFormat(""));

var clip = svg.append("svg:clipPath")
    .attr("id", "clip")
    .append("svg:rect")
    .attr("x", 0)
    .attr("y", 0)
    .attr("width", width)
    .attr("height", height);

var chartBody = svg.append("g")
    .attr("clip-path", "url(#clip)");

chartBody.append("svg:path")
    .datum(data)
    .attr("class", "line")
    .attr("d", line);

 function zoomed() {
    svg.select(".x.axis").call(xAxis);
    svg.select(".y.axis").call(yAxis);
    svg.select(".x.grid")
         .call(make_x_axis()
         .tickSize(-height, 0, 0)
         .tickFormat(""));
     svg.select(".y.grid")
         .call(make_y_axis()
         .tickSize(-width, 0, 0)
         .tickFormat(""));
    svg.select(".line")
        .attr("class", "line")
        .attr("d", line);
    }
}

Any help would be appreciated!!! Thank you!

4

1 回答 1

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您需要做的第一件事是将数据解析为 D3 可识别的格式。所以像：

var parseDate = d3.time.format("%Y-%d-%mT%H:%M:%S").parse; //Note the T in the middle

data.forEach(function (d,i) {
    d.date = parseDate(d.date);
    d.vertical= parseDate(d.vertical);
})

从那里把它扔到 line 函数上，我认为它应该全部解决。哦，API 参考对此非常有帮助，这里是哪里。

我刚刚通过将值更改为垂直并包括最后的右括号（oops）来编辑上面的代码块。

接下来是行生成器被设置为简单地返回日期或垂直值，因此需要将其更改为：

var line = d3.svg.line()
    .x(function (d) { return x(d.date); })
    .y(function (d) { return y(d.vertical); });

注意 和 的x(...)包含y(...)。

这是一个工作小提琴的链接

于 2013-10-27T02:11:49.337 回答