我有一个带有 2 个数据系列的Google 折线图Row A
-和Row B
:
这是非常简单的测试代码 - 只需在浏览器中打开它就可以了:
<!DOCTYPE HTML>
<html>
<head>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script type="text/javascript" src="https://www.google.com/jsapi?autoload={'modules':[{'name':'visualization','version':'1','packages':['corechart']}]}"></script>
<script type="text/javascript">
var data = {"rows":[
{"c":[{"v":"C"},{"v":-43},{"v":-42}]},
{"c":[{"v":"D"},{"v":-49},{"v":-39}]},
{"c":[{"v":"E"},{"v":-49},{"v":-48}]},
{"c":[{"v":"F"},{"v":-50},{"v":-49}]},
{"c":[{"v":"G"},{"v":-57},{"v":-56}]}],
"cols":[
{"p":{"role":"domain"},"label":"MEASUREMENT","type":"string"},
{"p":{"role":"data"},"label":"Row A","type":"number"},
{"p":{"role":"data"},"label":"Row B","type":"number"}]};
function drawCharts() {
var x = new google.visualization.DataTable(data);
var options = {
title: 'How to add tooltips?',
width: 800,
height: 600
};
var chart = new google.visualization.LineChart(document.getElementById('test'));
chart.draw(x, options);
}
$(function() {
google.setOnLoadCallback(drawCharts);
});
</script>
</head>
<body>
<div id="test"></div>
</body>
</html>
我想为每个数据点添加工具提示,例如显示:
A行:x=D y=-49
鼠标悬停时。而且我不能使用dataTable.addColumn
,因为我的图表是由 perl 脚本立即生成的,而我只是使用上面的data
Object 和cols
and rows
。
请问有人知道,这里怎么做吗?