javascript - Drawing mysql data with highcharts -


i'm trying plot data mysql table on document load highcharts: html looks that:

function fetchdata(){         //alert("fetching");         $.ajax({             url: 'php/reports/fetch_data.php',             success: function(data) {                 datatemp = [];                 for(i=0;i<data.length;i++){                     datatemp.push(data[i][0]);  // '1' index getting temp value. '0' date.                      }                  c_temperature.series[0].data = datatemp;                 for(i=0;i<data.length;i++){                     datatemp.push(data[i][1]);  // '1' index getting temp value. '0' date.                      }                 c_temperature.series[1].data = datatemp;                 }              });  function drawcharts(){         c_temperature = new highcharts.chart({             chart: {                 renderto: 'dashboard',                 defaultseriestype: 'spline',             },             title: {                 text: 'temperatur'             },             xaxis: {                 type: 'datetime',                 tickpixelinterval: 150,                 maxzoom: 20 * 1000             },             yaxis: {                 minpadding: 0.2,                 maxpadding: 0.2,                 title: {                     text: 'value',                     margin: 10                 }             },                 legend:{                     enabled: false                 },                 credits:{                     enabled: false                 },                 series: [{                     name: 'temperatur',                     data: []                 }]         });  $(document).ready(function() {         drawcharts();         fetchdevices();         fetchdata();        });  <body> <div id="dashboard"> </div> <div class="clear"></div> </body>

and php call looks that:

try {     $con = new pdo("mysql:host=$servername; dbname=$dbname", $username, $password);#     echo 'connected</br>';     $sql = "select zeit,feuchte,temperatur,lux,pitch ".$mac.     " order id";      foreach($con - > query($sql) $row) {         $x = $row['zeit'];         /*$x = mktime()*1000;*/         $y_h = (float) $row['feuchte'];         /*$y_t=(float)$row['temperatur'];         $y_l=(float)$row['lux'];         $y_a=(float)$row['pitch'];*/         $ret = array($x, $y_h, /*$y_t,$y_l,$y_a,$mac*/ );         echo json_encode($ret);     }     $con = null; }

the php code returns data. dont see graph , debugging browser console not give clue either. suggestions i'm doing wrong?

beste regards

you want use c_temperature.series[0].setdata(datatemp, true); , c_temperature.series[1].setdata(datatemp, true);. setting data, you're not telling highcharts redraw chart, nothing happening when update data.


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