php - Get json data into Highcharts scatter plot -

i cannot highcharts graph scatter plot of 2 series. actually, graph isn't showing up. please me determine i'm doing wrong. cannot find scatter plot example go off of , new this. i've got json data php file looks like:

[[65,44],[66,37],[67,42],[68,55],[65,50],[65,41],[65,41],[68,41],[69,42],[70,47],[69,55],[67,45],[67,49],[67,53],[67,49],[68,51],[68,55],[68,57],[70,53],[69,66],[68,54],[69,52],[68,48]][[75,36],[72,42],[75,44],[69,56],[72,40],[73,37],[77,34],[77,40],[74,50],[77,45],[77,43],[75,47],[73,52],[73,50],[75,44],[72,54],[71,57],[72,57],[74,55],[74,54],[75,47],[78,45],[75,43]] 

this should 2 series in (x,y) format. want graph these on scatter plot in highcharts. highcharts code is:

  <script type="text/javascript"> $(function () {     var chart;     $(document).ready(function() {         $.getjson("comfortgb1b.php", function(json) {                 chart = new highcharts.chart({                     chart: {                     renderto: 'container4',                     type: 'scatter',                     marginright: 175,                     marginbottom: 50                 },                 title: {                     text: 'comfort level',                     x: -20 //center                 },                 subtitle: {                     text: '',                     x: -20                 },                 xaxis: {                     title: {                         enabled: true,                         text: 'temp (f)'                     },                     min: 60,                     max: 85,                     startontick: true,                     endontick: true,                     showlastlabel: true                 },                 yaxis:  {                     title: {                         text: 'humidity (%rh)'                     },                                       min: 30,                     max: 100                 },                                 plotoptions: {                 scatter: {                     marker: {                         radius: 5,                         states: {                             hover: {                                 enabled: true,                                 linecolor: 'rgb(100,100,100)'                             }                         }                     },                     states: {                         hover: {                             marker: {                                 enabled: false                             }                         }                     },                      tooltip: {                         headerformat: '<b>{series.name}</b><br>',                         pointformat: '{point.x} f, {point.y} %rh'                     }                 },                  series: [{                     name: 'night',                     data: json(1)                                }, {                                     name: 'night',                     data: json(2)                      });         });      });  });         </script> 

thanks in advance!

the php file creating json data below. how separate these arrays comma?

  $result1 = mysql_query("select round(avg(d_internal_duct_return),0) 'avg_return', round(avg(d_evap_pre_humidity),0) 'avg_hum' pheom.pheom_gb timestamp between subdate(curdate(), interval 2 month) , curdate()  , hour(timestamp) not between 9 , 22 group day(timestamp) order timestamp"); $ret1 = array(); while($item = mysql_fetch_array($result1)) {     $avg_return1 = $item['avg_return'];     $avg_hum1 = $item['avg_hum'];     $ret1[] = array($avg_return1,$avg_hum1); }  $result2 = mysql_query("select round(avg(d_internal_duct_return),0) 'avg_return', round(avg(d_evap_pre_humidity),0) 'avg_hum' pheom.pheom_gb timestamp between subdate(curdate(), interval 2 month) , curdate()  , hour(timestamp) between 9 , 22 group day(timestamp) order timestamp"); $ret2 = array(); while($item = mysql_fetch_array($result2)) {     $avg_return2 = $item['avg_return'];     $avg_hum2 = $item['avg_hum'];     $ret2[] = array($avg_return2,$avg_hum2); } echo json_encode($ret1, json_numeric_check); echo json_encode($ret2, json_numeric_check); 

not sure this, @ first glance think array returned php file requires additional square bracket outside in order parsed proper json. is:

[[65,44],[66,37]..][[75,36],[72,42]..] 

from know, 2 arrays. want enclose these arrays within array. try changing to:

[[[65,44],[66,37]..],[[75,36],[72,42]..]] 

that is, add square bracket outside , separate 2 arrays using comma.

in addition, here:

series: [{         name: 'night',         data: json(1)     }, {         name: 'night',         data: json(2) }); 

json(1) , json(2) interpreted function calls. should instead use:

series: [{         name: 'night',         data: json[0]     }, {         name: 'night',         data: json[1] }); 

edit ---- edited per op edits

also requested, in order add commas , proper formatting, php file can changed @ last 2 lines follows:

echo "[".json_encode($ret1, json_numeric_check).","; echo json_encode($ret2, json_numeric_check)."]";