Google Charts - 点击图例键时隐藏行 [英] Google Charts - Hide line when clicking legend key
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问题描述
我希望能够在点击图例中的相关按键时显示/隐藏线图上的线条，这可能吗？
I'd like to be able to show/hide the lines on my line graph when clicking the relevant key in the legend, is this possible?
推荐答案
如果您不需要包含缩放和动画，那么一个选项就是使用lineWidth和areaOpacity值隐藏数据;
If you don't need to include scaling and animation then one option is just hide data using lineWidth and areaOpacity values;
<head>
<script type='text/javascript' src='https://www.google.com/jsapi'></script>
<script>
function updateTable() {
// quick data - cleaned up for this example real data sources
data = new Array();
data[0] = new Array();
data[0][0] = "Day";
data[0][1] = "Metric 1";
data[0][2] = "Metric 2";
data[0][3] = "Metric 3";
data[1] = new Array();
data[1][0] = 1;
data[1][1] = 200;
data[1][2] = 50;
data[1][3] = 400;
data[2] = new Array();
data[2][0] = 2;
data[2][1] = 440;
data[2][2] = 140;
data[2][3] = 40;
data[3] = new Array();
data[3][0] = 3;
data[3][1] = 300;
data[3][2] = 500;
data[3][3] = 600;
var gdata = google.visualization.arrayToDataTable(data);
var options = {
// title: 'kala',
hAxis: {title: 'Days', titleTextStyle: {color: '#333'}}
,vAxis: {minValue: 0}
,height: 300
,width: 600
,chartArea: {left: 60}
,lineWidth: 2
,series: {0:{color: 'black', areaOpacity: 0.3, lineWidth: 2}
,1:{color: 'red', areaOpacity: 0.3, lineWidth: 2}
,2:{color: 'purple', areaOpacity: 0.3, lineWidth: 2}}
};
var chart = new google.visualization.AreaChart(document.getElementById('my_chart'));
chart.draw(gdata, options);
google.visualization.events.addListener(chart,
'select',
(function (x) { return function () { AreaSelectHander(chart, gdata, options)}})(1));
}
function AreaSelectHander(chart, gdata, options) {
// when ever clicked we enter here
// more code needed to inspect what actually was clicked, now assuming people
// play nicely and click only lables...
var selection = chart.getSelection();
var view = new google.visualization.DataView(gdata);
console.log(options);
// click and data index are one off
i = selection[0].column - 1;
// just simple reverse
if (options.series[i].lineWidth == 0) {
options.series[i].lineWidth = 2;
options.series[i].areaOpacity = 0.3;
}
else {
options.series[i].lineWidth = 0;
options.series[i].areaOpacity = 0.0;
}
chart.draw(gdata, options);
}
</script>
<script type='text/javascript'>
google.load('visualization', '1', {packages:['table', 'corechart']});
google.setOnLoadCallback(updateTable);
</script>
</head>
<body>
<div id='my_chart'></div>
</body>
这篇关于Google Charts - 点击图例键时隐藏行的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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