I'm having a bit of a problem. I want to create a visualization, but
load the data from an external file using the JSON format.
Every example I can find is using static JSON within the visualization
script, without calling if from an external file.
For testing my source file is:
{version:'0.6',reqId:'0',status:'ok',sig:'5982206968295329967',table:
{cols:[{id:'Col1',label:'',type:'number'},
{id:'Col2',label:'',type:'number'},
{id:'Col3',label:'',type:'number'}],rows:[{c:[{v:1.0,f:'1'},{v:
2.0,f:'2'},
{v:3.0,f:'3'}]},{c:[{v:2.0,f:'2'},{v:3.0,f:'3'},{v:4.0,f:'4'}]},{c:[{v:
3.0,f:'3'},{v:4.0,f:'4'},{v:5.0,f:'5'}]},{c:
[{v:1.0,f:'1'},{v:2.0,f:'2'},{v:3.0,f:'3'}]}]}}
My visualization script is as follows:
<script type="text/javascript" src="http://www.google.com/jsapi";></
script>
<script type="text/javascript">
google.load("visualization", "1", {packages:["Table",
"MotionChart"]});
google.setOnLoadCallback(initialize);
function initialize() {
var opts = {sendMethod: 'xhr'};
var query = new google.visualization.Query('http://localhost/
analytics/source.csv?tqx=reqId:0;',opts);
response = query.send();
data = google.visualization.Query.setResponse(response)
data = google.visualization.Query.getDataTable(query);
var table = new
google.visualization.Table(document.getElementById
('chart_div'));
table.draw(data, {showRowNumber: true});
}
</script>
I get no error messages, the JSON file is loaded according to Firebug,
but the screen is blank. What am I doing wrong? Any help would be
appreciated!! Thanks.
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