title: Highchart bar chart, stack start from +ve and end on -ve value on y-axis
body: <p>I am working on plotting the <strong>bar chart using highcharts</strong> and I have following use cases <strong>those needs to plot in same chart</strong>.
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  1. Input - Green: 100, Red: -100 and Gray Transparent: 0
  <br>Expected Output: no Gray bar, Green bar: 0 to 100 and Red bar: 0 to -100
  <br><br>
  2. Input - Green: 100, Red: -100 and Gray Transparent: 50
  <br>Expected Output: Gray bar: 0 to 50, Green bar: 50 to 100 and Red bar: 50 to -50
  <br><br>
  3. Input - Green: 100, Red: -100 and Gray Transparent: -50
  <br>Expected Output: Gray bar: 0 to -50, Green bar: -50 to 50 and Red bar: -50 to -150
  <br><br>
  4. Input - Green: 100, Red: -100 and Gray Transparent: 150
  <br>Expected Output: Gray bar: 0 to 150, Green bar: 150 to 250 and Red bar: 150 to 50
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  Note: Green and Red bar should plot based on the value of Gray bar.</p>