score:2

Accepted answer

Set minimum of yAxis below 0 and threshold to null (that way the columns extend from the padding Y axis minimum) Highcharts API: plotOptions.bar.threshold

Example: http://jsfiddle.net/4w23mrod/

...
yAxis: {
   min: -50,
   ...
},
plotOptions: {
   bar: {
      threshold: null,
      ...

OR

You can use minPointLength

Example

score:0


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