Thanks a lot! I'll give it a try. I did see getSnapshot() in FireBug but it wasn't listed as a member function of the ChartWrapper class. I guess it's an undocumented feature.
On Sep 5, 5:24 am, Viz Kid <[email protected]> wrote: > Hi > > You are correct and indeed in order to access the data from the > ChartWrapper, you need to take a snapshot of the ChartWrapper which contains > a static version of the current data. For example, you can > call wrapper.getSnapshot().getDataTable(); > Notice that if you have a custom view over the table, this might not work as > you expect. > > Hope this helps, > Viz Kid > > > > > > > > On Mon, Sep 5, 2011 at 8:44 AM, Kirill N <[email protected]> wrote: > > I create a chart using ChartWrapper (http://code.google.com/apis/chart/ > > interactive/docs/reference.html#chartwrapperobject) that loads data > > from a remote source i.e. via dataSourceUrl(). Now I'd like to add > > interactivity to catch clicks. The code to getSelection() works just > > fine and give me an object with row and column number - just like it's > > described at > >http://code.google.com/apis/chart/interactive/docs/events.html#The_Se... > > > My problem is getting a value for those rows and columns. > > > If I do wrapper.getDataTable() I get null (it's documented and > > expected since chart is created from remote data source). > > > Documentation suggests making data a global object so it can be > > accessed: > > > "In order to read the selected data, you'll need to call > > DataTable.getValue() in your handler; the simplest way to enable that > > is to make the DataTable object global." > > > Question is, when data is loaded from remote data source during a call > > to draw(), how can I catch it or get to it to store it in a global > > object for future access? Can't seem to find any reference to this in > > documentation or on the web. > > > -- > > You received this message because you are subscribed to the Google Groups > > "Google Visualization API" group. > > To post to this group, send email to > > [email protected]. > > To unsubscribe from this group, send email to > > [email protected]. > > For more options, visit this group at > >http://groups.google.com/group/google-visualization-api?hl=en. -- You received this message because you are subscribed to the Google Groups "Google Visualization API" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-visualization-api?hl=en.
