如何在gRaphael线图hoverColumn函数中检索当前的X值？

Question

Below I've posted some code and comments for making a simple gRaphael linechart with tag hovereffects (the included script files can be found at http://raphaeljs.com and http://g.raphaeljs.com ). 在下面，我发布了一些代码和注释，用于制作带有标签hovereffects的简单gRaphael线图（包含的脚本文件可以在http://raphaeljs.com和http://g.raphaeljs.com上找到）。 The code works as it should (and can thus be a good example for others starting out with gRaphael linecharts), but I have a question/request regarding the text argument of the tag function: 该代码可以正常工作（因此对于以gRaphael折线图开始的其他人来说可以成为一个很好的示例），但是我对标记函数的text参数有一个疑问/要求：

As is, the tags will display the Y values for each point (this.values[i]) at the current column, but I would like to have both the X values and the Y values displayed (X, Y). 照原样，标记将在当前列显示每个点的Y值（this.values [i]），但我想同时显示X值和Y值（X，Y）。 I'm sure it's pretty simple, but so far I've not been able to figure out how to do it. 我敢肯定这很简单，但是到目前为止，我还无法弄清楚该怎么做。 Adding the comma and a space is no problem, that's just ', ' + this.values[i] , but I can't figure out how to address the X values. 加上逗号和空格是没有问题的，那只是', ' + this.values[i] ，但是我不知道如何解决X值。 this.attr("x") is the closest I've come so far, but that's the X coordinate on the paper, not the X value on the chart's X axis ;-) this.attr("x")是我到目前为止最接近的，但这是纸张上的X坐标，而不是图表X轴上的X值；-)

Can anyone help me out please? 有人可以帮我吗？

// make tags at every point on the current column
for (var i = 0; i < this.y.length; i++) {
  this.tags.push(
  // make tag (x, y, text, degree, radius)
paper.tag(this.x, this.y[i], this.values[i], 0, 4).insertBefore(this).attr([{ fill: "#ffffff" }, { fill: this.symbols[i].attr("fill") }])
);

<html>
<head>
<title></title>
<script src="raphael-min.js"></script>
<script src="g.raphael-min.js"></script>
<script src="g.line-min.js"></script>
<script language="JavaScript">

function graphael() {

  var paper = Raphael("paper");

  var chartwidth = 800;
  var chartheight = 300;
  var charttopleftx = 20;
  var charttoplefty = 0;

  // The chart
  var linechart = paper.linechart(charttopleftx, charttoplefty, chartwidth, chartheight,

    // The X-coordinate sets
    [
    [0, 1, 2, 3, 4, 5],
    [0, 1, 2, 3, 4, 5],
    [0, 1, 2, 3, 4, 5]
    ],

    // The Y-coordinate sets
    [
    [500, 550, 540, 510, 600, 570],
    [500, 525, 400, 450, 390, 490],
    [500, 425, 500, 430, 650, 425]
    ],

    // Chart config
    { axis: "0 0 1 1", symbol: "circle", smooth: false, axisxstep: 5 });

    // The dots
    linechart.symbols.attr({ r: 4 });

    // The tags
    linechart.hoverColumn(

      // show
      function onmousein() {

        this.tags = paper.set(); // creates a set of tags (to be able to hide them all in one operation)

        // make tags at every point on the current column
        for (var i = 0; i < this.y.length; i++) {
          this.tags.push(
            // make tag (x, y, text, degree, radius)
            paper.tag(this.x, this.y[i], this.values[i], 0, 4).insertBefore(this).attr([{ fill: "#ffffff" }, { fill: this.symbols[i].attr("fill") }])
          );
        }

      }

      ,

      // hide
      function onmouseout() {
        this.tags.hide();
      }

    );

}

</script>
</head>

<body onload="graphael()">

<div id='paper' style='width:900;height:320;'></div>

</body>
</html>

Answer 1

Try to listing object in chrome (CTRL+SHIFT+I->Console). 尝试列出Chrome中的对象（CTRL + SHIFT + I->控制台）。 For example - get cy and y for every label in piechart legend. 例如-为饼图图例中的每个标签获取cy和y。

var pieChart = paper.piechart(w, h, rad, values, {legend: legend, legendpos: "south", minPercent: 0.1, legendothers: "Others"});

for( var i = 0; i < pieChart.labels.length; i++ ) {
 var CY=pieChart.labels[i][0][0].cy.animVal.value;
 var Y=pieChart.labels[i][1][0].y.animVal[0].value;
}

如何在gRaphael线图hoverColumn函数中检索当前的X值？

问题描述

1 个解决方案

解决方案1
0 2014-08-22 06:28:51

如何在gRaphael线图hoverColumn函数中检索当前的X值？

问题描述

1 个解决方案

解决方案1 0 2014-08-22 06:28:51

解决方案1
0 2014-08-22 06:28:51