You should return formatted Date objects from the getMonths function,
instead of returning a string:
var result = google.visualization.data.group(
data,
[{ column: 0, modifier: getMonths, type: 'date'}],
[{ 'column': 1, 'aggregation': google.visualization.data.sum, 'type':
'number' }, { 'column': 2, 'aggregation': google.visualization.data.sum,
'type': 'number'}]
);
function getMonths(someDate) {
var month = someDate.getMonth();
var year = someDate.getFullYear();
return {v: new Date(year, month), f: (month + 1) + '/' + year};
}
You must specify each column individually, even if they use the same
aggregation function.
On Thursday, September 18, 2014 2:10:06 AM UTC-4, Shivani Kanakhara wrote:
>
> Also while specifying columns in data.group , is there a way to specify
> all column together having same aggregation?
> E.g
>
> var result = google.visualization.data.group(
> data,
> [{ column: 0, modifier: getMonths, type: 'string'}],
> [{ 'column': 1, 'aggregation':
> google.visualization.data.sum, 'type': 'number' }, { 'column': 2,
> 'aggregation': google.visualization.data.sum, 'type': 'number'}]
> );
>
> here column 1 and column 2 have same values for aggregation and type..so
> can we write it as:
>
> [{ 'column': [1,2], 'aggregation': google.visualization.data.sum, 'type':
> 'number' }]
>
> or do we have to explicitly specify all properties for each columns?
>
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