title: How to add line which runs through origin (from positive to negative) on a scatterplot - highchart
body: <p>I am trying to create a reference line that runs through the origin and passes from negative to positive. See an example of what i am trying to achieve - see the threshold line. This threshold line must run through all three x, y coordinates (-1,-45,000), (0.0), (1, 45,000).
  <a href="https://i.stack.imgur.com/cLK80.png" rel="nofollow noreferrer">enter image description here</a></p>
  
  <p>Below is my work so far. </p>
  
  <p><a href="http://jsfiddle.net/catio6/rhf6yre5/1/" rel="nofollow noreferrer">http://jsfiddle.net/catio6/rhf6yre5/1/</a></p>
  
  <p>I've looked at this for reference but have had had no luck after several hours of attempts of replicating this with all three x, y coordinates (-1,-45,000), (0.0), (1, 45,000): <a href="http://jsfiddle.net/phpdeveloperrahul/XvjfL/" rel="nofollow noreferrer">http://jsfiddle.net/phpdeveloperrahul/XvjfL/</a></p>
  
  <pre><code>$(function () {
      $('#container').highcharts({
  
          xAxis: {
              categories: ['Jan', 'Feb', 'Mar']
          },
  
          series: [{
              data: [29.9, 71.5, 256]
          }]
  
      }, function(chart) { // on complete
           console.log("chart = ");
          console.log(chart);
          //chart.renderer.path(['M', 0, 0, 'L', 100, 100, 200, 50, 300, 100])
          chart.renderer.path(['M', 75, 223.5,'L', 259, 47])//M 75 223.5 L 593 223.5
              .attr({
                  'stroke-width': 2,
                  stroke: 'red'
              })
              .add();
  
      });
  });
  </code></pre>