Yes, you need to specify an "annotation" column for each of your data
columns. If you just want to display the value, the easiest way to do this
is with a DataView that calculates the annotations for you:
var data = google.visualization.arrayToDataTable([
['API Category', 'Social', 'Music', 'File Sharing', 'Storage',
'Weather'],
['2011', 98, 53, 12, 16, 6],
['2012', 151, 34, 26, 36, 49],
['2013', 69, 27, 22, 17, 15],
]);
var columns = [0];
for (var i = 1; i < data.getNumberOfColumns(); i++) {
columns.push(i);
columns.push({
type: 'string',
sourceColumn: i,
role: 'annotation',
calc: 'stringify'
});
}
var view = new google.visualization.DataView(data);
view.setColumns(columns);
Then use view to draw your chart instead of data.
On Tuesday, August 26, 2014 9:38:37 AM UTC-4, Nicolas Fortin wrote:
>
> Hi,
>
> With Google *stacked* column/bar charts, is there a way to display the
> value on each group like that :
>
> <http://i.stack.imgur.com/dgvfe.png>
>
>
>
>
>
>
>
>
>
>
>
>
> I tried with annotations but if I'm not wrong it only allow us to annotate
> the whole column, like in this codeopen http://codepen.io/anon/pen/xLIuB
>
>
> ...
> var data = google.visualization.arrayToDataTable([
> ['API Category', 'Social', 'Music', 'File Sharing', 'Storage',
> 'Weather', { role: 'annotation' } ],
> ['2011', 98, 53, 12, 16, 6, '15'],
> ['2012', 151, 34, 26, 36, 49, '14'],
> ['2013', 69, 27, 22, 17, 15, '14'],
> ]);
> ...
>
>
> Ty.
>
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