ajax - live update google charts php+js -


i have candlestick chart drawn googlecarts api. can't live updating it.

next code html part of chart visualisation:

<script type='text/javascript'> function drawv(){   var = $.ajax({   url: "_ajax3.php",   datatype:"html",   async: false   }).responsetext;   console.log(a);    var data = google.visualization.arraytodatatable([a],true);    options = {     chartarea:{       left: 55,       top: 40,       width: 760,       height: 210     },     candlestick:{       fallingcolor:{         fill: "#41a6ef",         stroke: "#41a6ef",         strokewidth: 1       },       risingcolor:{         fill: "#f01717",         stroke: "#f01717",         strokewidth: 1       },       hollowisrising: true     },     series: {0: {type: "candlesticks"}, 1: {type: "line", targetaxisindex:1, color:"#91d6ff"}},     legend:"none"   };   chart = new google.visualization.combochart(document.getelementbyid("chart_div"));   chart.draw(data, options); } google.setonloadcallback(drawv);  setinterval(function(){   drawv(); }, 10000); </script>  <div id='chart_div'></div>

i dont sure in ajax datatype, anyway, in worked case 'var data =...' line looks that:

var data = google.visualization.arraytodatatable([["18:26",20.79102,20.79102,20.79102,20.79102,20.79102],["18:27",20.79102,20.85,20.79102,20.85,20.82051],["18:28",20.85,20.8583,20.85,20.8583,20.85415], ["18:26",20.79102,20.79102,20.79102,20.79102,20.79102]],true);

and ajax return same data (without highlevel [ ]).

["18:26",20.79102,20.79102,20.79102,20.79102,20.79102],["18:27",20.79102,20.85,20.79102,20.85,20.82051],["18:28",20.85,20.8583,20.85,20.8583,20.85415], ["18:26",20.79102,20.79102,20.79102,20.79102,20.79102]

how can works? edit: next java error:uncaught error: not valid 2d array.

it looks ajax call returning string not valid json. modify server code add [ , ] ends of string, use create datatable:

var data = google.visualization.arraytodatatable(json.parse(a),true);

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