Hi Everyone,
I'm trying to have the maxValue and minValue drawn dynamically based on the
charts data. the chart is showing temperature over a periode of time and I
want to flatten out the chart.
I'm trying to use var high = ((data.getColumnRange(1).max) + 3); to add a
small value to the max temperature it finds. currently the alert (high);
actually shows 24 when opening the chart (21 is the max value found) so
that part works.I just cant get it to be the maxValue.
when i manually type in
maxValue: 24,
it seems to work fine.
Hope anyone can point me in the right direction.
here's the code i'm using
<html>
<head>
<!--Load the AJAX API-->
<script type="text/javascript"
src="https://www.google.com/jsapi";></script>
<script type="text/javascript"
src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script type="text/javascript">
// Load the Visualization API and the piechart package.
google.load('visualization', '1', {'packages':['corechart']});
// Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawChart);
function drawChart() {
var jsonData = $.ajax({
url: "getData2.php",
dataType:"json",
async: false
}).responseText;
var options = {
width: 900,
height: 500,
title: 'Temperatuur Woonkamer',
hAxis: {
format: 'EE HH:mm'
},
vAxis: {
maxValue: high,
minValue: low,
title: 'Temperatuur C'
}
};
// Create our data table out of JSON data loaded from server.
var data = new google.visualization.DataTable(jsonData);
var high = ((data.getColumnRange(1).max) + 3);
var low = (data.getColumnRange(1).min);
alert (high);
var dateFormatter = new google.visualization.DateFormat({pattern:
'dd-MM-yyyy HH:mm'});
dateFormatter.format(data, 0);
// Instantiate and draw our chart, passing in some options.
var chart = new
google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
</head>
<body>
<!--Div that will hold the pie chart-->
<div id="chart_div"></div>
</body>
</html>
Regards,
Léon
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