Javascript 谷歌图表:如何更改controlType:ControlWrapper的CategoryFilter中的默认选定值
我有一个类别过滤器,用于选择绑定到饼图的日期。目前,它将标题显示为默认值(“选择值”)。我想将其默认值设置为其中一个包含的值,例如last date 我该怎么做Javascript 谷歌图表:如何更改controlType:ControlWrapper的CategoryFilter中的默认选定值,javascript,visualization,google-visualization,Javascript,Visualization,Google Visualization,我有一个类别过滤器,用于选择绑定到饼图的日期。目前,它将标题显示为默认值(“选择值”)。我想将其默认值设置为其中一个包含的值,例如last date 我该怎么做 谢谢 有点晚,但请检查此示例: // Load the Visualization API and the piechart package. google.load('visualization', '1.0', {'packages':['corechart']}); // Set a callback to run
谢谢 有点晚,但请检查此示例:
// Load the Visualization API and the piechart package.
google.load('visualization', '1.0', {'packages':['corechart']});
// Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawChart);
// Callback that creates and populates a data table,
// instantiates the pie chart, passes in the data and
// draws it.
function drawChart() {
// Create the data table.
var data = google.visualization.arrayToDataTable([
['Year', 'Sales', 'Expenses'],
['2004', 1000, 400],
['2005', 1170, 460],
['2006', 660, 1120],
['2007', 1030, 540]
]);
var options = {
title: 'Company Performance'
};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
//============All=U=Need============
chart.setSelection([{'column': 1}]);
//============All=U=Need============
}
:D