I think you should add a view to the ScatterChart's ChartWrapper object.
 You still pass the whole DataTable to Dashboard#draw().  Have a look at

https://developers.google.com/chart/interactive/docs/gallery/controls#create_controls

It's kind of long, but it contains an example of setting a view in a
ChartWrapper.  (It's not exactly the same as creating a DataView object.)

Hope that helps, let me know if you have further questions.

MC Get Vizzy

---------- Forwarded message ----------
From: AnnaBrown <[email protected]>
Date: Sat, May 26, 2012 at 4:02 AM
Subject: [visualization-api] Dashboard - using CategoryPicker control on a
column that isn't drawn
To: Google Visualization API <[email protected]>


I'm using a the Query object to return a three columns of a table from
a google spreadsheet.  The first column is a label column, the 2nd and
3rd data values.

I'm trying to create a dashboard binding a CategoryPicker control
object and a ControlWrapper (ScatterChart) object.  I'd like to use
the Category Picker as a means of filtering the rows within the data
(by selecting the row labels in the first or label column) and then
have the remaining two columns of data drawn within the scatter chart.

I am knew to this API and I am struggling with how to concurrently
allow the CategoryPicker to work and exclude the label column from the
ScatterPlot ControlWrapper object.  I've tried using a DataView to
limit the Queried data view to the 2nd and 3rd columns, but I believe
the Dashboard object binding method needs all three columns to support
the CategoryPicker's function.

What's the appropriate way to go about achieving this outcome?

Thanks in advance.

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