jquery - Flot Graph 每日访客量

Question

我是 angular-js 新手，需要实现下面提到的功能。
我有一个包含完整数据的图表，在选择该图表的特定区域时，另一个图表应显示所选区域图的所选数据详细信息。

代码引用，请查看链接:Code in MS Drive

当选择下面的图表时，顶部的图表会相应地发生变化。 http://www.flotcharts.org/flot/examples/visitors/index.html

Answer 1

指定容器 div 的高度后，代码即可运行(这是必要的，请参阅 documentation )。请参阅片段:

    	$(function() {

    	  var d = [
    	    [1196463600000, 0],
    	    [1196550000000, 0],
    	    [1196636400000, 0],
    	    [1196722800000, 77],
    	    [1196809200000, 3636],
    	    [1196895600000, 3575],
    	    [1196982000000, 2736],
    	    [1197068400000, 1086],
    	    [1197154800000, 676],
    	    [1197241200000, 1205],
    	    [1197327600000, 906],
    	    [1197414000000, 710],
    	    [1197500400000, 639],
    	    [1197586800000, 540],
    	    [1197673200000, 435],
    	    [1197759600000, 301],
    	    [1197846000000, 575],
    	    [1197932400000, 481],
    	    [1198018800000, 591],
    	    [1198105200000, 608],
    	    [1198191600000, 459],
    	    [1198278000000, 234],
    	    [1198364400000, 1352],
    	    [1198450800000, 686],
    	    [1198537200000, 279],
    	    [1198623600000, 449],
    	    [1198710000000, 468],
    	    [1198796400000, 392],
    	    [1198882800000, 282],
    	    [1198969200000, 208],
    	    [1199055600000, 229],
    	    [1199142000000, 177],
    	    [1199228400000, 374],
    	    [1199314800000, 436],
    	    [1199401200000, 404],
    	    [1199487600000, 253],
    	    [1199574000000, 218],
    	    [1199660400000, 476],
    	    [1199746800000, 462],
    	    [1199833200000, 448],
    	    [1199919600000, 442],
    	    [1200006000000, 403],
    	    [1200092400000, 204],
    	    [1200178800000, 194],
    	    [1200265200000, 327],
    	    [1200351600000, 374],
    	    [1200438000000, 507],
    	    [1200524400000, 546],
    	    [1200610800000, 482],
    	    [1200697200000, 283],
    	    [1200783600000, 221],
    	    [1200870000000, 483],
    	    [1200956400000, 523],
    	    [1201042800000, 528],
    	    [1201129200000, 483],
    	    [1201215600000, 452],
    	    [1201302000000, 270],
    	    [1201388400000, 222],
    	    [1201474800000, 439],
    	    [1201561200000, 559],
    	    [1201647600000, 521],
    	    [1201734000000, 477],
    	    [1201820400000, 442],
    	    [1201906800000, 252],
    	    [1201993200000, 236],
    	    [1202079600000, 525],
    	    [1202166000000, 477],
    	    [1202252400000, 386],
    	    [1202338800000, 409],
    	    [1202425200000, 408],
    	    [1202511600000, 237],
    	    [1202598000000, 193],
    	    [1202684400000, 357],
    	    [1202770800000, 414],
    	    [1202857200000, 393],
    	    [1202943600000, 353],
    	    [1203030000000, 364],
    	    [1203116400000, 215],
    	    [1203202800000, 214],
    	    [1203289200000, 356],
    	    [1203375600000, 399],
    	    [1203462000000, 334],
    	    [1203548400000, 348],
    	    [1203634800000, 243],
    	    [1203721200000, 126],
    	    [1203807600000, 157],
    	    [1203894000000, 288]
    	  ];

    	  // first correct the timestamps - they are recorded as the daily
    	  // midnights in UTC+0100, but Flot always displays dates in UTC
    	  // so we have to add one hour to hit the midnights in the plot

    	  for (var i = 0; i < d.length; ++i) {
    	    d[i][0] += 60 * 60 * 1000;
    	  }

    	  // helper for returning the weekends in a period

    	  function weekendAreas(axes) {

    	    var markings = [],
    	      d = new Date(axes.xaxis.min);

    	    // go to the first Saturday

    	    d.setUTCDate(d.getUTCDate() - ((d.getUTCDay() + 1) % 7))
    	    d.setUTCSeconds(0);
    	    d.setUTCMinutes(0);
    	    d.setUTCHours(0);

    	    var i = d.getTime();

    	    // when we don't set yaxis, the rectangle automatically
    	    // extends to infinity upwards and downwards

    	    do {
    	      markings.push({
    	        xaxis: {
    	          from: i,
    	          to: i + 2 * 24 * 60 * 60 * 1000
    	        }
    	      });
    	      i += 7 * 24 * 60 * 60 * 1000;
    	    } while (i < axes.xaxis.max);

    	    return markings;
    	  }

    	  var options = {
    	    series: {
    	      bars: {
    	        show: true,
    	        lineWidth: 1,
    	        barWidth: 5,
    	        fill: true
    	      },
    	      shadowSize: 0
    	    },
    	    xaxis: {
    	      mode: "time",
    	      tickLength: 5
    	    },
    	    selection: {
    	      mode: "x"
    	    },
    	    grid: {
    	      markings: weekendAreas
    	    }
    	  };

    	  var plot = $.plot("#placeholder", [d], options);

    	  var overview = $.plot("#overview", [d], {
    	    series: {
    	      bars: {
    	        show: true,
    	        lineWidth: 3
    	      },
    	      shadowSize: 0
    	    },
    	    xaxis: {
    	      ticks: [],
    	      mode: "time"
    	    },
    	    yaxis: {
    	      ticks: [],
    	      min: 0,
    	      autoscaleMargin: 0.1
    	    },
    	    selection: {
    	      mode: "x"
    	    }
    	  });

    	  // now connect the two

    	  $("#placeholder").bind("plotselected", function(event, ranges) {

    	    // do the zooming
    	    $.each(plot.getXAxes(), function(_, axis) {
    	      var opts = axis.options;
    	      opts.min = ranges.xaxis.from;
    	      opts.max = ranges.xaxis.to;
    	    });
    	    plot.setupGrid();
    	    plot.draw();
    	    plot.clearSelection();

    	    // don't fire event on the overview to prevent eternal loop

    	    overview.setSelection(ranges, true);
    	  });

    	  $("#overview").bind("plotselected", function(event, ranges) {
    	    plot.setSelection(ranges);
    	  });

    	  // Add the Flot version string to the footer

    	  $("#footer").prepend("Flot " + $.plot.version + " &ndash; ");

    	  // Set default

    	  overview.setSelection({
    	    xaxis: {
    	      from: 1203289200000,
    	      to: 1203894000000
    	    }
    	  });


    	});

<script language="javascript" type="text/javascript" src="http://www.flotcharts.org/flot/jquery.js"></script>
<script language="javascript" type="text/javascript" src="http://www.flotcharts.org/flot/jquery.flot.js"></script>
<script language="javascript" type="text/javascript" src="http://www.flotcharts.org/flot/jquery.flot.time.js"></script>
<script language="javascript" type="text/javascript" src="http://www.flotcharts.org/flot/jquery.flot.selection.js"></script>

<div id="header">
  <h2>Visitors</h2>
</div>

<div id="content">

  <div class="demo-container">
    <div id="placeholder" class="demo-placeholder" style="height:150px;"></div>
  </div>

  <div class="demo-container">
    <div id="overview" class="demo-placeholder" style="height:150px;"></div>
  </div>

  <p>This plot shows visitors per day to the Flot homepage, with weekends colored.</p>

  <p>The smaller plot is linked to the main plot, so it acts as an overview. Try dragging a selection on either plot, and watch the behavior of the other.</p>

</div>

<div id="footer">
  Copyright &copy; 2007 - 2014 IOLA and Ole Laursen
</div>