collapsibleThreshold controls the threshold for calculation of auto Scale Break. It is measured in percentage of Axis Scale. Auto Breaks would be applied in a range where no dataPoints are present and if the range is more then collapsibleThreshold.
By default, collapsibleThreshold’s value is set to “25%”. This means space between data points which have a difference of at least 25% of the scale will be collapsed with auto calculated breaks.
Default: “25%”var  chart =  new  CanvasJS.Chart("container",
{
 .
 .
 axisX: {
     scaleBreaks: {
	 autoCalculate: true,  // change to false
	 collapsibleThreshold: "40%"
     },
     .
     .
}, 
 .
 . 
});
chart.render();
Also See: