javascript - Highcharts.js DateTime on x axis coming from JSON only displays number -


i'm struggling simple line graph highcharts.js. have json data coming in asp.net mvc controller:

public jsonresult getsensorlinedata(string sensorname)     {         list<sensormeasurement> result= this.sqlsensormeasuresrepository.findallmeasurements(sensorname).tolist();          list<string> days = new list<string>();         list<decimal> values = new list<decimal>();          foreach (var item in result)         {             values.add(item.value);             days.add(item.datetime.tostring());         }          dynamic data = new         {             categories=days,             values = values         };          return json(data, jsonrequestbehavior.allowget);     }

in cshtml file i'm doing this:

 homedataservice.init('@this.baseurl()');          homedataservice.gettemperaturelinedata("roomtemperature", function myfunction(data) {             var datacategories=[];              (var = 0; < data.categories.length; i++) {                 var strval = data.categories[i];                 var datetimeparts = strval.split(" ");                 var datepart = datetimeparts[0];                 var timepart = datetimeparts[1];                  var dateparts = datepart.split(".");                 var timeparts = timepart.split(":"); //german datetime string coming asp.net                   var date = new date(dateparts[2], (dateparts[1] - 1), dateparts[0], timeparts[0], timeparts[1]);                 data.categories[i]=(date.gettime());              }             var chart;             $('#temperature-line').highcharts({                 chart: {                     type: 'line'                 },                 title: {                     text: ''                 },                 subtitle: {                     text: ''                 },                 xaxis: {                     type: 'datetime',                     categories:data.categories,                     minortickinterval: 10,                     mintickinterval:10,                  },                 yaxis: {                     min: 0,                     title: {                         text: 'temperature'                     }                 },                  plotoptions: {                     column: {                         pointpadding: 0.2,                         borderwidth: 0                     }                 },                 series: [{                     name: 'temperature',                     data: data.values                 }]             });          });

as can see i'm transforming german datetime highcharts can interpret it. doesn't. output: enter image description here

update: ok i'm returning controller:

enter image description here

and changed chart code (see below) when run browser hangs. doing wrong?

var chart;             $('#temperature-line').highcharts({                 chart: {                     type: 'line'                 },                 title: {                     text: ''                 },                 subtitle: {                     text: ''                 },                 xaxis: {                     type: 'datetime'                  },                 yaxis: {                     min: 0,                     title: {                         text: 'temperature'                     }                 },                  plotoptions: {                     column: {                         pointpadding: 0.2,                         borderwidth: 0                     }                 },                 series: [{                     name: 'temperature',                     data: data                 }]             });          });

you can't use datetime axis , categories - it's strictly 1 or other axis type.

you need either remove categories, , send timestamps data x values, or format dates way want them displayed , use them categories.

if displaying time series data, makes more sense use datetime values instead of categories.


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