Max*_*Max 1 charts google-visualization
我想在折线图上显示数据值，即鼠标悬停时出现的数据值，我需要默认情况下全部显示。我在这里尝试了解决方案Google Charts API: Always show the Data Point Values in Graph
data.addColumn({type: 'number', role: 'annotation'});
我将此添加到我的代码中（我不确定将它确切放在哪里）但它没有做任何更改。
这是我的代码的一部分：
<!DOCTYPE html>
<html>
<head>
<title>Week/Orders</title>
<script type="text/javascript" src="loader.js"></script>
<script type="text/javascript">
google.charts.load('current', {'packages':['corechart']});
google.charts.setOnLoadCallback(drawChart);
function drawChart(){
var data = new google.visualization.DataTable();
var data = google.visualization.arrayToDataTable([
['Week','Orders'],
<?php
while($row = mysqli_fetch_assoc($aresult)){
echo "['".$row["Week"]."', ".$row["Orders"]."],";
}
?>
]);
var options = {
title: 'Week Vs Orders',
'width':1700,
'height':600,
legend: { position: 'bottom' }
};
var chart = new google.visualization.LineChart(document.getElementById('curvechart'));
chart.draw(data, options);
}
</script>
</head>
<body>
<div id="curvechart" style="width: 900px; height: 400px"></div>
</body>
</html>
我有两个值；周和订单。默认情况下，我只需要图表上显示的“订单”值。我怎样才能做到这一点？谢谢。
您可以使用 aDataView向图表添加注释
var view = new google.visualization.DataView(data);
view.setColumns([0, 1, {
calc: 'stringify',
sourceColumn: 1,
type: 'string',
role: 'annotation'
}]);
请参阅以下工作片段...
var view = new google.visualization.DataView(data);
view.setColumns([0, 1, {
calc: 'stringify',
sourceColumn: 1,
type: 'string',
role: 'annotation'
}]);
google.charts.load('current', {'packages':['corechart']});
google.charts.setOnLoadCallback(drawChart);
function drawChart(){
var data = google.visualization.arrayToDataTable([
['Week','Orders'],
['1', 5],
['2', 6],
['3', 4]
]);
var view = new google.visualization.DataView(data);
view.setColumns([0, 1, {
calc: 'stringify',
sourceColumn: 1,
type: 'string',
role: 'annotation'
}]);
var options = {
title: 'Week Vs Orders',
width: 1700,
height: 600,
legend: {position: 'bottom'}
};
var chart = new google.visualization.LineChart(document.getElementById('curvechart'));
chart.draw(view, options); // <-- use data view
}