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我有一个图表，允许用户选择一个选项来比较一个全州范围的平均值。该图表正常工作，直到我使用stringify方法创建注释 - 列的数量根据选择而变化。你如何保留这个功能，并且仍然有数据标签，你有什么建议？将数据标签添加到没有设置列的谷歌图表
<html>
<head>
<script type='text/javascript' src='https://www.google.com/jsapi'></script>
<script type='text/javascript'>
google.load('visualization', '1', {packages:['table', 'corechart']});
</script>
<script type='text/javascript'>
google.setOnLoadCallback(initialize);
function initialize() {drawVisualizations();
function drawVisualizations() {drawChart(); drawTable();} //drawC();}
//main chart
function drawChart() {
var dataCap = document.getElementById("selected2").value;
var query = new google.visualization.Query('https://docs.google.com/spreadsheets/d/1m3ujxzPQJh3haReNDzGGF73Mh6-u6HxyCVPK_5MK2hw/gviz/tq?sheet=Sheet2&range=A1:A5,E1:E5,' + dataCap); query.send(handleQueryResponse);
}
function handleQueryResponse(response) {
var data = response.getDataTable();
var options = {
'title':'College Readiness',
'subTitle':'Test',
'titleTextStyle': {fontSize: '24', color: 'teal', fontName: '"Arial"', isHTML: true},
hAxis: {'title': 'Percent of Students Ready', 'textStyle': {color: 'gray', fontSize: '9'}, 'minValue': '0', 'maxValue':'1','format': 'percent'},
vAxis: {'title': 'Academic Year', 'textStyle': {bold: true, fontSize: '16'}, 'minValue': '0', 'maxValue':'1'},
legend: {'position': 'top', 'maxLines': 5, 'textStyle': {bold: true, fontSize: '16', fontName: "'Arial'"}},
tooltip: {
textStyle: {fontName: "'Arial'"}},
series: {
0: {pointsVisible: true, color: '#003366'},
1: {pointsVisible: true, color: '#cc0000'}
},
annotations: {
textStyle: {bold: true,color: '#000000', fontName: "'Arial'"},
stem:{color: 'none'}
}};
function handleQueryResponse(response) {var data = response.getDataTable()};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));chart.draw(data, options);}
//current stats sidebar
function drawTable() {
var query2 = new google.visualization.Query('https://docs.google.com/spreadsheets/d/1m3ujxzPQJh3haReNDzGGF73Mh6-u6HxyCVPK_5MK2hw/gviz/tq?sheet=Sheet2&range=A:E');
query2.send(handleQueryResponse2);
}
function handleQueryResponse2(response) {
var data2 = response.getDataTable();
var options2 = {'sort': 'disable'};
var chart2 = new google.visualization.Table(document.getElementById('data_div'));
chart2.draw(data2, options2);}
}
</script>
<style type="text/css">
body {font-family: Arial, Helvetica, sans-serif;}
html, body {height: 100%;}
body {text-align: center;}
#chart_div {width: 900px; margin: 20px auto; height: 600px;}
</style>
</head>
<body>
<label for="selected2">You are viewing:</label>
<select id="selected2" onChange="initialize()">
<option selected value="">Statewide average only</option>
<option value="B1:B5">Fake University 1 compared to statewide average</option>
<option value="C1:C5">Fake University 2 compared to statewide average</option>
<option value="D1:D5">Fake University 3 compared to statewide average</option>
</select>
<input onClick="window.open('datatest21-data.html')" type="button" value="Download the complete data set" />
<div id="chart_div"></div>
<div id="data_div"></div>
</body>
</html>
下面是我用的字符串化方法，但它打乱了上面的代码：
//
var view = new google.visualization.DataView(data);
view.setColumns([0, 1, { calc: "stringify",
sourceColumn: 1,
type: "string",
role: "annotation"},
2,{ calc: "stringify",
sourceColumn: 2,
type: "string",
role: "annotation" }]);
//
这可能是我做的这一切都错了 - 咨询，赞赏。这种类型的编码对我来说是新的。
你知道哪些列需要一个注解？你可以基于'data.getNumberOfColumns（）'动态地构建'view.setColumns' ... – WhiteHat
我已经使用你提到的方法工作，但失去了交互性。见下面的帖子。 – commcordinator
初始化代码有问题。如果我拿出drawChart函数，它就可以工作。谢谢你的帮助。 – commcordinator