Highcharts Dashed Line Marker - Custom SVG

Highcharts Dashed Line Marker - Custom SVG.markdown

Highcharts Dashed Line Marker - Custom SVG

Custom marker to render a dashed line as part of highcharts

A Pen by Arjun Kannan on CodePen.

License.

index.html

<div id="container" style="height: 400px; max-width: 800px; margin: 0 auto"></div>

script.js

$(function() {
  //Detailed explanation here http://stackoverflow.com/questions/27542928/extend-highcharts-renderer-symbols-to-have-plus-sign
  // Define a custom symbol path
  Highcharts.SVGRenderer.prototype.symbols.dashedLine =
    function(x, y, w, h) {
      var returnArray = [];
      var startPoint = x - 5 * w;
      var endPoint = x + 5 * w;
      var dashWidth = w;
      var gapWidth = 0.5 * w;

      var yValWithOffset = y + w / 2; //account for marker radius when moving to the right Y position

      var currentPoint = startPoint;
      for (
        var currentPoint = startPoint; currentPoint <= endPoint; currentPoint += dashWidth + gapWidth /*jump forward one location*/ ) {
        returnArray.push('M', currentPoint, yValWithOffset, 'L', currentPoint + dashWidth, yValWithOffset);
      }
      returnArray.push('z'); //end drawing
      return returnArray;
    };

  if (Highcharts.VMLRenderer) {
    Highcharts.VMLRenderer.prototype.symbols.dashedLine = Highcharts.SVGRenderer.prototype.symbols.dashedLine;
  }

  $('#container').highcharts({

    title: {
      text: 'Dashed Line Marker Symbol'
    },

    legend: {
      y: -40 // make room for subtitle
    },

    xAxis: {
      categories: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
    },

    series: [{
      name: 'Custom symbol',
      data: [54.4, 29.9, 71.5, 106.4, 129.2, 144.0, 176.0, 135.6, 148.5, 216.4, 194.1, 95.6],
      marker: {
        symbol: 'dashedLine',
        lineColor: null,
        lineWidth: 1
      },
      dataLabels: {
        allowOverlap: true,
        zIndex: 3,
        enabled: true,
        x: -57.5,
        padding: 5,
        format: '{y:0.2f}',
        style: {
          color: '#555555'
        }
      }
    }],

    credits: {
      enabled: false
    }
  });
});

scripts

<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script src="https://code.highcharts.com/highcharts.js"></script>

Thanks man !