javascript - Plot always starts at 0, highstock spline chart -


i have data this

var data = []; for(var i=1;i<201;i++){    data.push([i,(math.random() * (80 - 40 + 1)) + 40]) }

and i'm creating chart this:

$('.reactivitycont').highcharts('stockchart', {           chart: {     margintop: 140       },       credits: {               enabled: false           },           rangeselector : {               selected : 1           },       scrollbar: {           enabled: false       },       navigator: {      top : 40,              xaxis: {                 labels: {                    formatter: function() {                       return this.value;                    }                 }              }           },           xaxis: {              labels: {         y: 50,                 formatter: function() {                    return this.value;                 }              },              events: {                setextremes: function (e) {                  start = parseint(e.min);          koniec = parseint(e.max);          $('.nt').hide();          for(var = start-1;i<koniec;i++){         $('.nt').eq(i).show();          }          main();                }      }           },         series : [{             type: 'column',             name : 'reactivity',             data : data,     showinlegend: false,             tooltip: {                 valuedecimals: 2             }         },     {type: 'spline',      name: 'experiment 1',      data: data2,      color: 'green',      visible: false,      tooltip: {         valuedecimals: 2      }     },     {type: 'spline',      name: 'experiment 2',      data: data3,      color: 'red',      visible: false,      tooltip: {         valuedecimals: 2      }     }     ],     legend :{     enabled: true,     margin: 0     },           rangeselector : {              buttons: [                 {                    type: 'millisecond',                    count: seqlength/5,                    text: '0.25'                 }, {                    type: 'millisecond',                    count: seqlength/3,                    text: '0.3'                  }, {                    type: 'millisecond',                    count: seqlength/2,                    text: '0.5'                  }, {                    type: 'all',                    text: '1.0'                  }              ],              inputenabled: false, // supports days              selected : 4 //           }     });

but unfortunately, plot starts 0, should not, because there no such value. tried fix it, e. g. setting plotoptions:pointstart didn't work.

this caused using column type series, columns starts 0. prevent set threshold: null, this: 

    series : [{         type: 'column',         threshold: null,         ...     }]

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