Hi,

i want not add new columns.. is there no way that i can take the 'date' 
 column from the DataTable and parse it to a column with type =date ? i 
thought i can overwrite values in a DataTable?

data = new google.visualization.arrayToDataTable([
                    ['date','New York','Austin','San 
Francisco','Country','Popularity'],
                    ['20111001',2,3,15,'Germany',200],
                    ['20111002',5,6,19,'Brazil',400],
                    ['20111003',8,9,23,'United States',300],
                    ['20111004',11,12,35,'RU',700]
                ];)

at the moment i have this data, and the "date" colum is parsed to a number..

can i not write a calc function that does the same as your code with the 
dataView ?

and second questions:

yout have set "return {v: date, f: formatter.formatValue(date)};" for what 
is v:date ? for the formatted value? because you have already set the type 
to date with "dataView.setColumns([{
    type: 'date',...."


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