thx
2011/6/15 Riccardo Govoni <[email protected]>
> There is some confusion in your script. The sequence of events should be:
>
> google.setOnLoadCallback(drawVisualization);
>
> function drawVisualization() {
> // Visualization API is loaded, fetch data from spreadsheet.
> var query = new google.visualization.Query(
> 'THIS IS MY GOOGLE SPREADSHEET URL');
>
> query.send(handleQueryResponse);
> }
>
> function handleQueryResponse(response) {
> if (response.isError()) {
> // handle Error
> }
> // Fetch was successful, extract datatable
> var data = response.getDataTable();
>
> // Define the controls you need
> var slider = new google.visualization.ControlWrapper({
> // ...
> });
>
> var barChart = new google.visualization.ChartWrapper({
> // ...
> }
>
> // Define the dashboard and give it the data you retrieved from the
> spreadsheet.
> new google.visualization.Dashboard(document.getElementById('dashboard')).
> bind(slider, barChart).
> draw(data);
> }
>
> As you see, you specify your spreadsheet url only once, fetch the data from
> it via Query and then proceed as in the simple dashboard
> example<http://code.google.com/apis/ajax/playground/?type=visualization#simple_dashboard>in
> assembling the dashboard.
>
> /R.
>
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