Sounds good, thank ya!
--Should I do a bug request to get this resolved though?

On Wednesday, August 15, 2012 11:03:00 PM UTC-4, asgallant wrote:
>
> Hmm...the Group function may not have been updated to handle column roles. 
>  No problem - it just takes one extra step: after grouping the data, use 
> the #setColumnProperty method to set the column's role:
>
> // set the fifth column to the 'tooltip' role
> groupedData.setColumnProperty(4, 'role', 'tooltip'); 
>
> On Wednesday, August 15, 2012 8:00:47 PM UTC-4, API Developer wrote:
>>
>> That's great!
>>
>> Are you sure the role: 'tooltip' works? I tried that and haven't been 
>> getting back the correct column when I do the group...
>>
>> On Wednesday, August 15, 2012 3:59:27 PM UTC-4, asgallant wrote:
>>>
>>> Yes, grouping works with column roles.  If the role column is part of 
>>> the group, you just need to use the column number.  If it is one of the 
>>> columns being grouped, you need to add role: 'tooltip' to the column 
>>> map, ie:
>>>
>>> {column: 4, aggregation: function(ar) { return ar.join('\n') } , type: 
>>> 'string' , role: 'tooltip'}, 
>>>
>>> On Wednesday, August 15, 2012 3:14:55 PM UTC-4, API Developer wrote:
>>>>
>>>> I was thinking about doing something like this:
>>>>
>>>> function drawJoin() {
>>>>   var dt = google.visualization.arrayToDataTable([
>>>>     ['Department Number', 'First Name', 'Last Name', 'Sales'],
>>>>     [1,                      'john',      'doe',       10],
>>>>     [1,                      'jane',      'doe',       100],
>>>>     [3,                      'jill',     'jones',      50],
>>>>     [3,                      'jack',     'janes',      75],
>>>>     [5,                      'al',    'weisenheimer',  500]
>>>>   ]);
>>>>
>>>>   // Group dt by column 0, and show column 3 aggregated by sum.
>>>>   var grouped_dt = google.visualization.data.group(
>>>>       dt, [0, 2],
>>>>     [ 
>>>>       {'column': 1, 'aggregation': function(ar) { return ar.toString() 
>>>> }, 'type': 'string'}, 
>>>>       {'column': 3, 'aggregation': google.visualization.data.sum, 
>>>> 'type': 'number'}
>>>>     ]);
>>>>
>>>>
>>>>   var table = new google.visualization.Table(document.getElementById(
>>>> 'table'));
>>>>   table.draw(dt, null);
>>>>
>>>>   var grouped_table = new google.visualization.Table(document.
>>>> getElementById('grouped_table'));
>>>>   grouped_table.draw(grouped_dt, null);
>>>> }
>>>> ​
>>>> Will this sort of thing work if I have tooltips/things with roles? Do I 
>>>> process them like all the other columns?
>>>>
>>>> On Tuesday, August 14, 2012 10:55:40 PM UTC-4, asgallant wrote:
>>>>>
>>>>> You can group by any column you want.  What would you like the 
>>>>> dataTable to look like after grouping?  Alternatively, what do you want 
>>>>> to 
>>>>> do with the grouped data?
>>>>>
>>>>> On Tuesday, August 14, 2012 9:05:32 PM UTC-4, API Developer wrote:
>>>>>>
>>>>>> Hey guys,
>>>>>>
>>>>>> Do you know if it's possible to keep the domain the same if you want 
>>>>>> to group based off another variable entirely?
>>>>>> My data looks like this:
>>>>>> var data = google.visualization.arrayToDataTable([
>>>>>>       ['ID', 'Life Expectancy', 'Fertility Rate', 'Region',     
>>>>>> 'Population'],
>>>>>>       ['CAN',    80.66,              1.67,      'North America',  
>>>>>> 33739900],
>>>>>>       ['DEU',    79.84,              1.36,      'Europe',         
>>>>>> 81902307],
>>>>>>       ['DNK',    78.6,               1.84,      'Europe',         
>>>>>> 5523095],
>>>>>>       ['EGY',    72.73,              2.78,      'Middle East',    
>>>>>> 79716203],
>>>>>>       ['GBR',    80.05,              2,         'Europe',         
>>>>>> 61801570],
>>>>>>       ['IRN',    72.49,              1.7,       'Middle East',    
>>>>>> 73137148],
>>>>>>       ['IRQ',    68.09,              4.77,      'Middle East',    
>>>>>> 31090763],
>>>>>>       ['ISR',    81.55,              2.96,      'Middle East',    
>>>>>> 7485600],
>>>>>>       ['RUS',    68.6,               1.54,      'Europe',         
>>>>>> 141850000],
>>>>>>       ['USA',    78.09,              2.05,      'North America',  
>>>>>> 307007000]
>>>>>>     ]);
>>>>>>
>>>>>> I want to do a group on Region, is this possible.
>>>>>>
>>>>>> If not, is there anything I can do so I can keep a list of the ID's 
>>>>>> that would go under the region?
>>>>>> --My plan would be to make it so it shows in the tooltips
>>>>>>
>>>>>

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