I want to use Google Annotated Time Line to generate a graph using values
generated from a PHP script, so far I have:
<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', 'Data');
data.addRows([
[new Date($y1, 1, 1), $value_y1_1],
[new Date($y1, 2, 1), $value_y1_2],
[new Date($y1, 3, 1), $value_y1_3],
]);
var chart = new
google.visualization.AnnotatedTimeLine(document.getElementById('chart_div1'));
chart.draw(data, {displayAnnotations: true});
}</script>
I want to add more monthly data points, from $y1 to $y80, with the
corresponding $value. I used a for loop but got "undefined variable" error.
Suggestions?
Thanks!
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