Area charts and line charts redraw bring to a high memory usage status
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Massimo
Jul 13, 2010, 11:41:40 AM7/13/10
to Google Visualization API
Hi,
I am writing a web page that receive new data externally every second
and draw an area chart.
Every time i receive new data I update the DataTable and I draw again
the chart.
Everything is fine except that the memory used by the browser increase
and increase reaching unacceptable values after some minutes. This
thing doesn't happen at all if i use the annotated time line.
Is it a bug?
Cheers,
Massimo
I am writing a web page that receive new data externally every second
and draw an area chart.
Every time i receive new data I update the DataTable and I draw again
the chart.
Everything is fine except that the memory used by the browser increase
and increase reaching unacceptable values after some minutes. This
thing doesn't happen at all if i use the annotated time line.
Is it a bug?
Cheers,
Massimo
Viz Kid
Jul 14, 2010, 11:53:32 AM7/14/10
to google-visua...@googlegroups.com
Can you tell us which packages are you loading, namely if you are using the new charts (package 'corechart') or the older version (packages 'linechart' and 'areachart')?
Best,
Viz Kid
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Massimo
Jul 15, 2010, 7:22:14 AM7/15/10
to Google Visualization API
Hi,
I am using corechart package.
Cheers,
Massimo
> > google-visualizati...@googlegroups.com<google-visualization- api%2Bunsu...@googlegroups.com>
> > .
I am using corechart package.
Cheers,
Massimo
> > .
mgenti
Jul 29, 2010, 11:15:27 AM7/29/10
to Google Visualization API
I am also seeing the same problem when viewing an updating chart in
Internet Explorer. I have tried both the linechart and corechart
packages but both exhibit the same problems. Here is an example that
shows constantly increasing memory in IE:
<html>
<head>
<script type="text/javascript" src="https://www.google.com/
jsapi"></script>
<script type="text/javascript">
google.load("visualization", "1", {packages:["linechart"]});
//google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(onLoad);
var chart;
var data;
var chart_options = {width: 580, height: 179};
var MAXROWS = 30;
function tester() {
data.addRow([Math.floor(Math.random()*50)]);
if (data.getNumberOfRows() > MAXROWS) {
data.removeRow(0);
}
chart.draw(data, chart_options);
}
function onLoad() {
data = new google.visualization.DataTable();
data.addColumn('number', 'Line1');
chart = new
google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, chart_options);
setInterval(tester, 1000);
}
</script>
</head>
<body>
<div id="chart_div"></div>
</body>
</html>
Internet Explorer. I have tried both the linechart and corechart
packages but both exhibit the same problems. Here is an example that
shows constantly increasing memory in IE:
<html>
<head>
<script type="text/javascript" src="https://www.google.com/
jsapi"></script>
<script type="text/javascript">
google.load("visualization", "1", {packages:["linechart"]});
//google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(onLoad);
var chart;
var data;
var chart_options = {width: 580, height: 179};
var MAXROWS = 30;
function tester() {
data.addRow([Math.floor(Math.random()*50)]);
if (data.getNumberOfRows() > MAXROWS) {
data.removeRow(0);
}
chart.draw(data, chart_options);
}
function onLoad() {
data = new google.visualization.DataTable();
data.addColumn('number', 'Line1');
chart = new
google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, chart_options);
setInterval(tester, 1000);
}
</script>
</head>
<body>
<div id="chart_div"></div>
</body>
</html>
Massimo
Jul 29, 2010, 12:01:55 PM7/29/10
to Google Visualization API
Hi,
you can join us here:
http://groups.google.com/group/google-visualization-api/browse_thread/thread/caf0485110cde20e/7f68250dc9b1e681?lnk=gst&q=high+memory
I hope they will fix it soon.
Cheers,
Massimo
you can join us here:
http://groups.google.com/group/google-visualization-api/browse_thread/thread/caf0485110cde20e/7f68250dc9b1e681?lnk=gst&q=high+memory
I hope they will fix it soon.
Cheers,
Massimo
Viz Kid
Aug 18, 2010, 5:29:31 PM8/18/10
to google-visua...@googlegroups.com
We hope that this issue was just fixed in our most recent release.
Please let us know if you still see this problem (or others).
Best,
Viz Kid
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