javascript - how to make google chart moving and update dynamically -


i don't know how make google chart moving, , asking again out there .i need badly.. want make google chart moving database because database collecting data automatically.i want chart move automatic update without refreshing it. following javascript code:

the output of following code the output of following code

<!doctype html> <html>   <head>     <!-- external libs-->     <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>     <script src="https://www.gstatic.com/charts/loader.js"></script>     <script src="jquery.min.js"></script>     <!-- example script -->     <script>      google.charts.load('current', {     callback: drawchart,     packages: ['corechart']     });        // onload callback       function drawchart() {            // jsonp request         var jsondata = $.ajax({           url: 'livedata.php',           datatype: 'json',         }).done(function (results) {            var data = new google.visualization.datatable(jsondata);            data.addcolumn('date', 'time_stamp');           data.addcolumn('number', 'ph');           data.addcolumn('number', 'moist');             $.each(results, function (i, row) {            data.addrow([          new date(row.time_stamp),           parsefloat(row.ph),           parsefloat(row.moist)             ]);           });            var chart = new google.visualization.areachart($('#chart').get(0));            chart.draw(data, {           title: 'soil analysis',           curvetype: 'function',           displayannotations: true           //legend: { position: 'bottom' }           //pointsize: 10           });         });        }       drawchart();     setinterval(drawchart, 10000);        // load chart lib         // call drawchart once google charts loaded     //  google.setonloadcallback(drawchart);      </script>      </head>   <body>     <div id="chart" style="width: 80%;height:380px"></div>   </body> </html>

i dont know if affect chart making move following php json code:

$query = "select readingid, moist, ph , time_stamp soilreading"; $result = mysqli_query($connection, $query);  $data_points = array(); while($row = mysqli_fetch_array($result)){   $wholedate = date('c',strtotime($row['time_stamp']));   $monthnum = date('m',strtotime($row['time_stamp'])); $daynum = date('d', strtotime($row['time_stamp']));    $yearnum = date('y', strtotime($row['time_stamp']));    $dateobj   = datetime::createfromformat('!m', $monthnum); $monthname = $dateobj->format('f'); if(($monthnum == "9")&&($yearnum == "2017")){       if (array_key_exists($daynum, $data_points)) {       $data_points[$daynum]->ph += $row['ph'] / $data_points[$daynum]->ph = count($row['ph']);       $data_points[$daynum]->moist += $row['moist'];           }else{       //$data_points[$daynum]->ts = $yearnum."".$monthname ."".$daynum;      // $data_points[$daynum]->ts = $yearnum."".$monthnum."".$daynum;       $data_points[$daynum]->time_stamp =$wholedate;       //$data_points[$daynum]->ts = $wholedate;             $data_points[$daynum]->ph = $row['ph'] /  $data_points[$daynum]->ph = count($row['ph']);       $data_points[$daynum]->moist = $row['moist'];       } }   } $jsonresult = json_encode(array_values($data_points)); echo $jsonresult;

what's point in using jsondata variable? looks it's not required @ all. try this:

$.ajax({    url: 'livedata.php',    datatype: 'json', }).done(function (results) {     var data = new google.visualization.datatable();

also make use of google.setonloadcallback(drawchart); tried. ensure drawchart run after google api loaded.


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