Question

我使用python在我的8888端口上运行了一个http.server。

我正在尝试将tsv文件加载到日/小时热图中： [链接] http://bl.ocks.org/tjdecke/5558084#data.tsv

请注意data.tsv文件和代码

以下输出是导航到相应文件时我在Chrome浏览器中看到的内容。它没有加载全部数据。

enter image description here

（这无疑是我使用D3的第一次传球）

<!DOCTYPE html>
<meta charset="utf-8">
<html>
  <head>
    <style>
      rect.bordered {
        stroke: #E6E6E6;
        stroke-width:2px;   
      }

      text.mono {
        font-size: 9pt;
        font-family: Consolas, courier;
        fill: #aaa;
      }

      text.axis-workweek {
        fill: #000;
      }

      text.axis-worktime {
        fill: #000;
      }
    </style>
    <script src="http://d3js.org/d3.v3.js"></script>
  </head>
  <body>
    <div id="chart"></div>

    <script type="text/javascript">
      var margin = { top: 50, right: 0, bottom: 100, left: 30 },
          width = 960 - margin.left - margin.right,
          height = 430 - margin.top - margin.bottom,
          gridSize = Math.floor(width / 24),
          legendElementWidth = gridSize*2,
          buckets = 9,
          colors = ["#ffffd9","#edf8b1","#c7e9b4","#7fcdbb","#41b6c4","#1d91c0","#225ea8","#253494","#081d58"], // alternatively colorbrewer.YlGnBu[9]
          days = ["Mo", "Tu", "We", "Th", "Fr", "Sa", "Su"],
          times = ["1a", "2a", "3a", "4a", "5a", "6a", "7a", "8a", "9a", "10a", "11a", "12a", "1p", "2p", "3p", "4p", "5p", "6p", "7p", "8p", "9p", "10p", "11p", "12p"];


      d3.tsv("data.csv",
        function(d) {
          return {
            day: +d.day,
            hour: +d.hour,
            value: +d.value
          };
        },
        function(error, data) {
          var colorScale = d3.scale.quantile()
              .domain([0, buckets - 1, d3.max(data, function (d) { return d.value; })])
              .range(colors);

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

          var dayLabels = svg.selectAll(".dayLabel")
              .data(days)
              .enter().append("text")
                .text(function (d) { return d; })
                .attr("x", 0)
                .attr("y", function (d, i) { return i * gridSize; })
                .style("text-anchor", "end")
                .attr("transform", "translate(-6," + gridSize / 1.5 + ")")
                .attr("class", function (d, i) { return ((i >= 0 && i <= 4) ? "dayLabel mono axis axis-workweek" : "dayLabel mono axis"); });

          var timeLabels = svg.selectAll(".timeLabel")
              .data(times)
              .enter().append("text")
                .text(function(d) { return d; })
                .attr("x", function(d, i) { return i * gridSize; })
                .attr("y", 0)
                .style("text-anchor", "middle")
                .attr("transform", "translate(" + gridSize / 2 + ", -6)")
                .attr("class", function(d, i) { return ((i >= 7 && i <= 16) ? "timeLabel mono axis axis-worktime" : "timeLabel mono axis"); });

          var heatMap = svg.selectAll(".hour")
              .data(data)
              .enter().append("rect")
              .attr("x", function(d) { return (d.hour - 1) * gridSize; })
              .attr("y", function(d) { return (d.day - 1) * gridSize; })
              .attr("rx", 4)
              .attr("ry", 4)
              .attr("class", "hour bordered")
              .attr("width", gridSize)
              .attr("height", gridSize)
              .style("fill", colors[0]);

          heatMap.transition().duration(1000)
              .style("fill", function(d) { return colorScale(d.value); });

          heatMap.append("title").text(function(d) { return d.value; });

          var legend = svg.selectAll(".legend")
              .data([0].concat(colorScale.quantiles()), function(d) { return d; })
              .enter().append("g")
              .attr("class", "legend");

          legend.append("rect")
            .attr("x", function(d, i) { return legendElementWidth * i; })
            .attr("y", height)
            .attr("width", legendElementWidth)
            .attr("height", gridSize / 2)
            .style("fill", function(d, i) { return colors[i]; });

          legend.append("text")
            .attr("class", "mono")
            .text(function(d) { return "≥ " + Math.round(d); })
            .attr("x", function(d, i) { return legendElementWidth * i; })
            .attr("y", height + gridSize);
      });
    </script>
  </body>
</html>

Answer 1

代码看起来正确，因为它与示例中显示的方式完全一致，问题可能出在您的数据文件中。仅在第一个网格中获取数据意味着您的x和y值无法正确呈现。 .attr（＆＃34; x ＆＃34;，函数（d）{return（d.hour - 1）* gridSize;}） .attr（＆＃34; y ＆＃34;，function（d）{return（d.day - 1）* gridSize;}）

名称日期和小时是否正确写入？（甚至上限会产生问题 - 比如日和小时而不是白天和小时）

希望这有帮助。

D3仅加载一个数据单元

1 个答案: