thank you asgallant. actually, i want to put the month in the x axis, not the date. i try to hide the day information by using date format. but it is still strange. in the x axis, there are many points of the same month (i just want one month to show once). here are my code and results.
function drawChart() {
var dates = [
[new Date(Date.parse('05/03/2013')),3],
[new Date(Date.parse('06/03/2013')),6]
];
var data = new google.visualization.DataTable();
data.addColumn('date', 'month');
data.addColumn('number', 'results');
for(var i = 0; i < dates.length; i++) {
var dt = dates[i];
var date = new Date(dt[0].getFullYear(), dt[0].getMonth());
data.addRow([date, i+dt[1]]);
};
// Format data
var dateFormat = new google.visualization.DateFormat({pattern:
'yyyy-MM'});
dateFormat.format(data, 0);
// Create and draw the visualization.
var chart = new
google.visualization.ScatterChart(document.getElementById('chart_div'));
var options = {
hAxis: {
title: 'month',
format: 'yyyy-MM'
},
vAxis: {
title: 'results',
}
};
chart.draw(data, options);
}
google.setOnLoadCallback(drawChart);
google.load('visualization', '1', {packages:['corechart']});
On Wednesday, October 9, 2013 2:11:29 PM UTC+2, asgallant wrote:
>
> Yes, you can use dates. You must enter them as javascript Date objects,
> though, not as strings.
>
> On Wednesday, October 9, 2013 5:34:52 AM UTC-4, min ji wrote:
>>
>> hello everybody,
>> i want to draw a scatter chart. but my data of x axis is date. is there
>> some ways that i can draw scatter with date?
>> thank you
>>
>
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<<attachment: results.jpg>>
