Google Charts Annotated Time Line Tips Not Appearing
I am trying to implement an Annotated Time Line Chart via Google Charts API. I successfully got it work, using an AJAX call to load data from a database, however I noticed that although the annotations appear on the right, they would not appear above the points on the graph ( like tool-tips). However they worked great otherwise, I could click on them and eve开发者_运维技巧n include the Annotation filter properly.
After an hour or so of not seeing any errors, I decided to go back to the drawing board and took an exact copy of the chart example code from the Google API and test it out. It turns out I am having the same issue.
The link to the tutorial is here (notice how A and B show up on the graph itself), I also pasted the code below.
Is there some setting I'm missing or something that would be blocking this? I tested in Chrome and Firefox and neither worked. Also it works for me on the tutorial page so I'm at a loss.
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Google Charts Example</title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type='text/javascript'>
google.load('visualization', '1', {'packages':['annotatedtimeline']});
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('date', 'Date');
data.addColumn('number', 'Sold Pencils');
data.addColumn('string', 'title1');
data.addColumn('string', 'text1');
data.addColumn('number', 'Sold Pens');
data.addColumn('string', 'title2');
data.addColumn('string', 'text2');
data.addRows([
[new Date(2008, 1 ,1), 30000, undefined, undefined, 40645, undefined, undefined],
[new Date(2008, 1 ,2), 14045, undefined, undefined, 20374, undefined, undefined],
[new Date(2008, 1 ,3), 55022, undefined, undefined, 50766, undefined, undefined],
[new Date(2008, 1 ,4), 75284, undefined, undefined, 14334, 'Out of Stock','Ran out of stock on pens at 4pm'],
[new Date(2008, 1 ,5), 41476, 'Bought Pens','Bought 200k pens', 66467, undefined, undefined],
[new Date(2008, 1 ,6), 33322, undefined, undefined, 39463, undefined, undefined]
]);
var chart = new google.visualization.AnnotatedTimeLine(document.getElementById('chart_div'));
chart.draw(data, {displayAnnotations: true});
}
</script>
</head>
<body>
<div id='chart_div' style='width: 80%; height: 50%;'></div>
</body>
</html>
My guess is that you are using https://www.google.com/jsapi instead of http://... but your page is not in https.
And a comment... You are using a mix of quotes and double quotes, that's not very clean.
Try to stick to a simple rule like: Keep the double quotes for HTML like id="chart_div" and the single quote for Javascript data.addColumn('date', 'Date');.
I had the same problem as you when I was viewing my chart from file:// but when I uploaded it to a server and tested it at http:// the annotation markers showed up on the timeline like they are supposed to.
加载中,请稍侯......
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