That won't really work. If i understand correctly, he is trying to assemble
a dashboard where the controls use some columns (manufacturer,region) while
the charts require some other (region should be exclude), but the controls
and chart should still be bound together so that playing with the controls
updates the chart.
In which case, there's a 'view' setting for the ChartWrapper specification
that lets you choose which columns should the chart receive, out of a
possibly wider set of columns powering the entire dashboard.
Something like:
var manuControl = new google.visualization.ControlWrapper({
controlType: 'CategoryFilter',
options: {
filterColumnLabel: 'Manufacturer',
...
});
var regionControl = new google.visualization.ControlWrapper({
controlType: 'CategoryFilter',
options: {
filterColumnLabel: 'Region',
...
});
var chart = new google.visualization.ChartWrapper({
chartType: 'BarChart',
options: {
... // whatever
},
* // skips column 1 "Region". Ensures the chart only gets the chosen
columns out of the entire datatable*
* view: {columns: [0, 2, 3, 4]} *
});
new google.visualization.Dashboard(...).bind([manuControl, regionControl],
chart).draw(data);
The dashboard gets the entire table. The controls pick their column each.
The chart picks only the columns it needs to display properly.
Would that work?
The documentation for the 'view' parameter is not in the chart documentation
at the moment ( I thought it was there a few days ago), I'm looking into
this.
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