jQuery 在 Google 图表中显示/隐藏线条/数据
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Show/hide lines/data in Google Chart
提问by Bidstrup
I'm trying to make a google line chart with 2 lines in it.
我正在尝试制作一个包含 2 行的谷歌折线图。
You should be able to turn them on and off(show/hide) by two checkboxes..
您应该能够通过两个复选框打开和关闭它们（显示/隐藏）。
Anyone got any idea show to make this, og just give some pointers?
任何人都有任何想法来制作这个，OG只是提供一些指示？
My guess would be some onClick jQuery stuff?
我的猜测是一些 onClick jQuery 的东西？
<html>
<head>
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript">
google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawChart);
function drawChart() {
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);
}
</script>
</head>
<body>
<div id="chart_div" style="width: 900px; height: 500px;"></div>
</body>
</html>
回答by Shinov T
try this
尝试这个
Mark up:
标记：
<body>
<div id="chart_div" style="width: 900px; height: 500px;"></div>
<button type="button" id="hideSales" >Hide Sales</button>
<button type="button" id="hideExpenses" >Hide Expence</button>
</body>
Script:
脚本：
<script type="text/javascript">
google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawChart);
function drawChart() {
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);
var hideSal = document.getElementById("hideSales");
hideSal.onclick = function()
{
view = new google.visualization.DataView(data);
view.hideColumns([1]);
chart.draw(view, options);
}
var hideExp = document.getElementById("hideExpenses");
hideExp.onclick = function()
{
view = new google.visualization.DataView(data);
view.hideColumns([2]);
chart.draw(view, options);
}
}
</script>
回答by Abinaya Selvaraju
To get your required output check this code.
要获得所需的输出，请检查此代码。
google.visualization.events.addListener(chart, 'select', function () {
var sel = chart.getSelection();
// if selection length is 0, we deselected an element
if (sel.length > 0) {
// if row is null, we clicked on the legend
if (sel[0].row == null) {
var col = sel[0].column;
if (columns[col] == col) {
// hide the data series
columns[col] = {
label: data.getColumnLabel(col),
type: data.getColumnType(col),
calc: function () {
return null;
}
};
// grey out the legend entry
series[col - 1].color = '#CCCCCC';
}
else {
// show the data series
columns[col] = col;
series[col - 1].color = null;
}
var view = new google.visualization.DataView(data);
view.setColumns(columns);
chart.draw(view, options);
}
}
});
Instead of having check box use the legend to hide/show the lines.
而不是让复选框使用图例来隐藏/显示线条。
Check this for the working sample: jqfaq.com
检查工作示例：jqfaq.com
回答by Pythonator
Recently the behavior of the selectevent changed so Abinaya Selvaraju's answer needs a slight fix
最近select事件的行为发生了变化，因此 Abinaya Selvaraju 的回答需要稍微修正
if (typeof sel[0].row === 'undefined') {
...
}
becomes
变成
if (sel[0].row == null) {
...
}
回答by Daniel
I updated the solution provided by Shinov T to allow real toggling (show/hide) of columns. You can see the result in this fiddle.
我更新了 Shinov T 提供的解决方案，以允许真正切换（显示/隐藏）列。你可以在这个 fiddle 中看到结果。
I added this code to save the current state of each column to allow toggleing:
我添加了此代码以保存每列的当前状态以允许切换：
var toggleSales = document.getElementById("toggleSales");
var salesHidden = false;
toggleSales.onclick = function() {
salesHidden = !salesHidden;
view = new google.visualization.DataView(data);
if (salesHidden) {
view.hideColumns([1]);
}
chart.draw(view, options);
}
var toggleExp = document.getElementById("toggleExpenses");
var expHidden = false;
toggleExp.onclick = function() {
expHidden = !expHidden;
view = new google.visualization.DataView(data);
if (expHidden) {
view.hideColumns([2]);
}
chart.draw(view, options);
}
