我使用Facebook Graph API来获取参与和感兴趣的事件页数。我想将这些放在图表中,但我无法使用Google Charts绘制多个饼图。
我将数据引用到div中没有任何问题,因为它显示了一个饼图,其中只有一个事件的正确数据,如下所示:http://charlottebijl.nl/event-charts/
我已将来自API的数据放在div的HTML数据属性中,因此我只能编写一次此代码并保持代码清洁。
<?php
// count the number of events
$event_count = count($obj['data']);
for($x=0; $x<$event_count; $x++){
$eid = $obj['data'][$x]['id'];
$name = $obj['data'][$x]['name'];
$attending_count = isset($obj['data'][$x]['attending_count']) ? $obj['data'][$x]['attending_count'] : "";
$interested_count = isset($obj['data'][$x]['interested_count']) ? $obj['data'][$x]['interested_count'] : "";
?>
<script>
function drawChart() {
var piechartID = $('.event .piechart').attr('id');
var attending_count = $('.event').data("attending");
var interested_count = $('.event').data("interested");
var capacity = 400;
var rest_capacity = capacity - (attending_count + interested_count);
var data = google.visualization.arrayToDataTable([
['Bezoekers', 'Aantal'],
['Gaan', attending_count],
['Geinteresseerd', interested_count],
['Overige capaciteit', rest_capacity]
]);
var options = {'title':'Evenement' + piechartID ,
'width':400,
'height':300,
};
var chart = new google.visualization.PieChart(document.getElementById(piechartID));
chart.draw(data, options);
}
</script>
<div class='col-xs-6'>
<div class='event' data-id="<?php echo $eid ?>" data-eventcount="<?php echo $x ?>" data-attending="<?php echo $attending_count ?>" data-interested="<?php echo $interested_count ?>">
<div class="event-header">
<div class="image" style="background-image:url('<?php echo $pic_big ?>');"></div>
<b><a href='https://www.facebook.com/events/<?php echo $eid ?>'><?php echo $name ?></a></b>
</div>
<div id="<?php echo $eid ?>" class="piechart"></div>
<ul class="event-info">
<li><strong>Attending: </strong><?php echo $attending_count ?></li>
<li><strong>Interested: </strong><?php echo $interested_count ?></li>
</ul>
</div>
</div>
//end of php for each
<?php } ?>
在页面底部我有这个代码,它将执行绘图功能
google.charts.load('current', {'packages':['corechart']});
google.charts.setOnLoadCallback(drawChart);
我研究过并发现你必须制作一个var data2和var options2,这样你就可以用chart.draw(data2,options2)绘制;制作第二张图表。有没有办法在循环中执行此操作?
答案 0 :(得分:2)
您需要循环遍历.event
元素,如下所示:
var charts = {
init: function() {
var self = this;
$('.event').each(function() {
var $this = $(this);
self.draw($this.data('attending'), $this.data('interested'));
})
},
draw: function(attending, interested) {
// Your drawChart function
}
}
// charts.init(); // Draw them if you want to
现在,您可以charts.init
使用setOnLoadCallback
。
答案 1 :(得分:0)
谢谢Cas,在这里获得了工作代码:
if let myAnswer = (bigArray[1] as NSDictionary).valueForKey("person"){
print(myAnswer)
}