Hi,
I have a situation (html code is shown below), when all the elements of
the second column (clk) is empty.
In this case, the chart.draw function fails with the message "All series on
a given axis must be of the same data type×"
Is there a workaround?
(In my environment, I am updating graphs every hour, and at some later time
some of the elements in the second column may be
populated, but I want the chart to be shown properly at least for i/o even
when all the elements of clk are empty.)
Thanks.
<html>
<head>
<script type="text/javascript"
src="https://www.google.com/jsapi";></script>
<script type="text/javascript">
google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = google.visualization.arrayToDataTable([
['Date', 'clk', 'io'],
['03_18_2014', , 1000],
['03_31_2014', , 1020],
['04_04_2014', , 1035]
]);
var options = {
title : 'Area over time',
legend : {position: 'in'},
pointSize : 10
};
var chart = new
google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
</head>
<body>
<h1> Line Chart </h1>
<div id="chart_div" style="width: 900px; height: 500px;"></div>
<h1>Line Chart Ends </h1>
</body>
</html>
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