如何在 dygraph 中添加注释？
How can I add an Annotation in dygraph?
我有以下使用 dygraphs 显示图表的代码：
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>title tbd - jsFiddle demo</title>
<script type='text/javascript' src='http://code.jquery.com/jquery-1.4.4rc2.js'></script>
<link rel="stylesheet" type="text/css" href="/css/result-light.css">
<script type='text/javascript' src="http://dygraphs.com/dygraph-combined.js"></script>
<style type='text/css'>
</style>
<script type='text/javascript'>//<![CDATA[
var csvData = function() {
return "Date,Close Price\n" +
"2015-09-17,5.20\n" +
"2015-09-16,5.31\n" +
"2015-09-15,5.40\n" +
"2015-09-14,5.20\n" +
"2015-09-11,5.17\n" +
"2015-09-10,5.20\n" +
"2015-09-09,5.09\n" +
"2015-09-08,5.05\n" +
"2015-09-07,4.90\n" +
"2015-09-04,4.74\n" +
"2015-09-03,4.68\n" +
"2015-09-02,4.24\n" +
"2015-09-01,4.20\n" +
"2015-08-31,4.06\n" +
"2015-08-28,4.19\n" +
"2015-08-27,4.08\n" +
"2015-08-26,4.20\n" +
"2015-08-25,4.04\n" +
"2015-08-24,3.53\n" +
"2015-08-21,4.30\n" +
"2015-08-20,4.45\n" +
"2015-08-19,4.58\n" +
"2015-08-18,4.54\n" +
"2015-08-17,4.63\n" +
"2015-08-14,4.49\n" +
"2015-08-13,4.56\n" +
"2015-08-12,4.69\n" +
"2015-08-11,4.80\n" +
"2015-08-10,4.65\n" +
"2015-08-07,4.40\n" +
"2015-08-06,4.24\n" +
"2015-08-05,3.98\n" +
"2015-08-04,3.84\n" +
"2015-08-03,3.66\n" +
"2015-07-31,4.71\n" +
"2015-07-30,4.71\n" +
"2015-07-29,4.71\n" +
"2015-07-28,4.71\n" +
"2015-07-27,4.71\n" +
"2015-07-24,4.71\n" +
"2015-07-23,4.71\n" +
"2015-07-22,4.71\n" +
"2015-07-21,4.71\n" +
"2015-07-20,4.71\n" +
"2015-07-17,4.71\n" +
"2015-07-16,4.71\n" +
"2015-07-15,4.71\n" +
"2015-07-14,4.71\n" +
"2015-07-13,4.71\n" +
"2015-07-10,4.71\n" +
"2015-07-09,4.71\n" +
"2015-07-08,4.71\n" +
"2015-07-07,4.71\n" +
"2015-07-06,4.71\n" +
"2015-07-03,4.71\n" +
"2015-07-02,4.71\n" +
"2015-07-01,4.71\n" +
"2015-06-30,4.71\n" +
"2015-06-29,4.71\n" +
"2015-06-26,4.71\n" +
"2015-06-25,4.45\n" +
"2015-06-24,4.43\n" +
"2015-06-23,4.41\n" +
"2015-06-22,4.14\n" +
"2015-06-19,3.84\n" +
"2015-06-18,3.65\n" +
"2015-06-17,3.63\n" +
"2015-06-16,4.23\n" +
"2015-06-15,4.49\n" +
"2015-06-12,4.74\n" +
"2015-06-11,5.04\n" +
"2015-06-10,4.75\n" +
"2015-06-09,4.75\n" +
"2015-06-08,4.61\n" +
"2015-06-05,4.69\n" +
"2015-06-04,4.91\n" +
"2015-06-03,4.94\n" +
"2015-06-02,4.68\n" +
"2015-06-01,4.56\n" +
"2015-05-29,4.56\n" +
"2015-05-28,4.96\n" +
"2015-05-27,5.29\n" +
"2015-05-26,4.75\n" +
"2015-05-25,4.88\n" +
"2015-05-22,5.06\n" +
"2015-05-21,5.18\n" +
"2015-05-20,5.07\n" +
"2015-05-19,5.28\n" +
"2015-05-18,5.26\n" +
"2015-05-15,4.95\n" +
"2015-05-14,5.00\n" +
"2015-05-13,5.18\n" +
"2015-05-12,5.49\n" +
"2015-05-11,5.50\n" +
"2015-05-08,5.74\n" +
"2015-05-07,5.84\n" +
"2015-05-06,5.60\n" +
"2015-05-05,5.28\n" +
"2015-05-04,5.80\n" +
"2015-05-01,5.99\n" +
"2015-04-30,5.99\n" +
"2015-04-29,5.46\n" +
"2015-04-28,5.58\n" +
"2015-04-27,5.45\n" +
"2015-04-24,4.97\n" +
"2015-04-23,4.87\n" +
"2015-04-22,4.57\n" +
"2015-04-21,4.30\n" +
"2015-04-20,4.85\n" +
"2015-04-17,4.86\n" +
"2015-04-16,5.09\n" +
"2015-04-15,4.80\n" +
"2015-04-14,5.00\n" +
"2015-04-13,5.45\n" +
"2015-04-10,5.45\n" +
"2015-04-09,5.45\n" +
"2015-04-08,5.38\n" +
"2015-04-07,5.42\n" +
"2015-04-06,5.50\n" +
"2015-04-03,5.50\n" +
"2015-04-02,5.50\n" +
"2015-04-01,5.49\n" +
"2015-03-31,5.70\n" +
"2015-03-30,5.80\n" +
"2015-03-27,5.68\n" +
"2015-03-26,5.40\n" +
"2015-03-25,5.83\n" +
"2015-03-24,5.83\n" +
"2015-03-23,5.30\n" +
"2015-03-20,5.01\n" +
"2015-03-19,4.84\n" +
"2015-03-18,4.90\n" +
"2015-03-17,5.13\n" +
"2015-03-16,4.91\n" +
"2015-03-13,5.18\n" +
"2015-03-12,5.53\n" +
"2015-03-11,5.58\n" +
"2015-03-10,5.70\n" +
"2015-03-09,5.60\n" +
"2015-03-06,6.15\n" +
"2015-03-05,6.19\n" +
"2015-03-04,6.40\n" +
"2015-03-03,6.32\n" +
"2015-03-02,6.51\n" +
"2015-02-27,7.00\n" +
"2015-02-26,7.30\n" +
"2015-02-25,7.50\n" +
"2015-02-24,6.88\n" +
"2015-02-23,6.05\n" +
"2015-02-20,6.05\n" +
"2015-02-19,6.09\n" +
"2015-02-18,5.90\n" +
"2015-02-17,5.98\n" +
"2015-02-16,6.00\n" +
"2015-02-13,6.20\n" +
"2015-02-12,5.54\n" +
"2015-02-11,5.25\n" +
"2015-02-10,5.64\n" +
"2015-02-09,5.18\n" +
"2015-02-06,5.15\n" +
"2015-02-05,5.27\n" +
"2015-02-04,5.50\n" +
"2015-02-03,5.69\n" +
"2015-02-02,5.12\n" +
"2015-01-30,4.80\n" +
"2015-01-29,4.78\n" +
"2015-01-28,4.45\n" +
"2015-01-27,5.17\n" +
"2015-01-26,5.82\n" +
"2015-01-23,5.63\n" +
"2015-01-22,5.16\n" +
"2015-01-21,4.94\n" +
"2015-01-20,5.18\n" +
"2015-01-19,5.20\n" +
"2015-01-16,4.77\n" +
"2015-01-15,4.90\n" +
"2015-01-14,5.03\n" +
"2015-01-13,5.31\n" +
"2015-01-12,5.20\n" +
"2015-01-09,4.93\n" +
"2015-01-08,4.76\n" +
"2015-01-07,4.97\n" +
"2015-01-06,5.07\n" +
"2015-01-05,5.07\n" +
"2015-01-02,5.55\n" +
"2015-01-01,5.40\n" +
"2015-10-28,10";
};
$(document).ready(function () {
// Get your data from somewhere
var data = csvData();
// Set highlight start and end
var highlight_start = new Date('2015/09/17');
var highlight_end = new Date('2015/10/28');
g = new Dygraph(
document.getElementById("graphdiv"),
data,
{
animatedZooms: true,
underlayCallback: function(canvas, area, g) {
var bottom_left = g.toDomCoords(highlight_start,0);
var top_right = g.toDomCoords(highlight_end,2500);
console.log(bottom_left);
console.log(top_right);
var left = bottom_left[0];
var right = top_right[0];
canvas.fillStyle = "rgba(255, 255, 102, 1.0)";
canvas.fillRect(left, area.y, right - left, area.h);
}
}
);
g.setAnnotations([
{
series: "Temperature",
x: "2015-05-08",
shortText: "L",
text: "Coldest Day"
}
]);
});
</script>
</head>
<body>
<div id="graphdiv" style="width:600px; height:300px;"></div>
<div id="div_g" style="width:600px; height:300px;"></div>
<p>When you zoom and pan, the region remains highlighted.</p>
</body>
</html>
我尝试添加注释，如 http://dygraphs.com/annotations.html 中所述：
g.setAnnotations([
{
series: "Temperature",
x: "2015-05-08",
shortText: "L",
text: "Coldest Day"
}
]);
但是注释没有出现。我做错了什么？
将 series 更改为您的其中一个列名，例如Close Price:
g.setAnnotations([
{
series: "Close Price",
x: "2015-05-08",
shortText: "L",
text: "Coldest Day"
}
]);
我有以下使用 dygraphs 显示图表的代码：
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>title tbd - jsFiddle demo</title>
<script type='text/javascript' src='http://code.jquery.com/jquery-1.4.4rc2.js'></script>
<link rel="stylesheet" type="text/css" href="/css/result-light.css">
<script type='text/javascript' src="http://dygraphs.com/dygraph-combined.js"></script>
<style type='text/css'>
</style>
<script type='text/javascript'>//<![CDATA[
var csvData = function() {
return "Date,Close Price\n" +
"2015-09-17,5.20\n" +
"2015-09-16,5.31\n" +
"2015-09-15,5.40\n" +
"2015-09-14,5.20\n" +
"2015-09-11,5.17\n" +
"2015-09-10,5.20\n" +
"2015-09-09,5.09\n" +
"2015-09-08,5.05\n" +
"2015-09-07,4.90\n" +
"2015-09-04,4.74\n" +
"2015-09-03,4.68\n" +
"2015-09-02,4.24\n" +
"2015-09-01,4.20\n" +
"2015-08-31,4.06\n" +
"2015-08-28,4.19\n" +
"2015-08-27,4.08\n" +
"2015-08-26,4.20\n" +
"2015-08-25,4.04\n" +
"2015-08-24,3.53\n" +
"2015-08-21,4.30\n" +
"2015-08-20,4.45\n" +
"2015-08-19,4.58\n" +
"2015-08-18,4.54\n" +
"2015-08-17,4.63\n" +
"2015-08-14,4.49\n" +
"2015-08-13,4.56\n" +
"2015-08-12,4.69\n" +
"2015-08-11,4.80\n" +
"2015-08-10,4.65\n" +
"2015-08-07,4.40\n" +
"2015-08-06,4.24\n" +
"2015-08-05,3.98\n" +
"2015-08-04,3.84\n" +
"2015-08-03,3.66\n" +
"2015-07-31,4.71\n" +
"2015-07-30,4.71\n" +
"2015-07-29,4.71\n" +
"2015-07-28,4.71\n" +
"2015-07-27,4.71\n" +
"2015-07-24,4.71\n" +
"2015-07-23,4.71\n" +
"2015-07-22,4.71\n" +
"2015-07-21,4.71\n" +
"2015-07-20,4.71\n" +
"2015-07-17,4.71\n" +
"2015-07-16,4.71\n" +
"2015-07-15,4.71\n" +
"2015-07-14,4.71\n" +
"2015-07-13,4.71\n" +
"2015-07-10,4.71\n" +
"2015-07-09,4.71\n" +
"2015-07-08,4.71\n" +
"2015-07-07,4.71\n" +
"2015-07-06,4.71\n" +
"2015-07-03,4.71\n" +
"2015-07-02,4.71\n" +
"2015-07-01,4.71\n" +
"2015-06-30,4.71\n" +
"2015-06-29,4.71\n" +
"2015-06-26,4.71\n" +
"2015-06-25,4.45\n" +
"2015-06-24,4.43\n" +
"2015-06-23,4.41\n" +
"2015-06-22,4.14\n" +
"2015-06-19,3.84\n" +
"2015-06-18,3.65\n" +
"2015-06-17,3.63\n" +
"2015-06-16,4.23\n" +
"2015-06-15,4.49\n" +
"2015-06-12,4.74\n" +
"2015-06-11,5.04\n" +
"2015-06-10,4.75\n" +
"2015-06-09,4.75\n" +
"2015-06-08,4.61\n" +
"2015-06-05,4.69\n" +
"2015-06-04,4.91\n" +
"2015-06-03,4.94\n" +
"2015-06-02,4.68\n" +
"2015-06-01,4.56\n" +
"2015-05-29,4.56\n" +
"2015-05-28,4.96\n" +
"2015-05-27,5.29\n" +
"2015-05-26,4.75\n" +
"2015-05-25,4.88\n" +
"2015-05-22,5.06\n" +
"2015-05-21,5.18\n" +
"2015-05-20,5.07\n" +
"2015-05-19,5.28\n" +
"2015-05-18,5.26\n" +
"2015-05-15,4.95\n" +
"2015-05-14,5.00\n" +
"2015-05-13,5.18\n" +
"2015-05-12,5.49\n" +
"2015-05-11,5.50\n" +
"2015-05-08,5.74\n" +
"2015-05-07,5.84\n" +
"2015-05-06,5.60\n" +
"2015-05-05,5.28\n" +
"2015-05-04,5.80\n" +
"2015-05-01,5.99\n" +
"2015-04-30,5.99\n" +
"2015-04-29,5.46\n" +
"2015-04-28,5.58\n" +
"2015-04-27,5.45\n" +
"2015-04-24,4.97\n" +
"2015-04-23,4.87\n" +
"2015-04-22,4.57\n" +
"2015-04-21,4.30\n" +
"2015-04-20,4.85\n" +
"2015-04-17,4.86\n" +
"2015-04-16,5.09\n" +
"2015-04-15,4.80\n" +
"2015-04-14,5.00\n" +
"2015-04-13,5.45\n" +
"2015-04-10,5.45\n" +
"2015-04-09,5.45\n" +
"2015-04-08,5.38\n" +
"2015-04-07,5.42\n" +
"2015-04-06,5.50\n" +
"2015-04-03,5.50\n" +
"2015-04-02,5.50\n" +
"2015-04-01,5.49\n" +
"2015-03-31,5.70\n" +
"2015-03-30,5.80\n" +
"2015-03-27,5.68\n" +
"2015-03-26,5.40\n" +
"2015-03-25,5.83\n" +
"2015-03-24,5.83\n" +
"2015-03-23,5.30\n" +
"2015-03-20,5.01\n" +
"2015-03-19,4.84\n" +
"2015-03-18,4.90\n" +
"2015-03-17,5.13\n" +
"2015-03-16,4.91\n" +
"2015-03-13,5.18\n" +
"2015-03-12,5.53\n" +
"2015-03-11,5.58\n" +
"2015-03-10,5.70\n" +
"2015-03-09,5.60\n" +
"2015-03-06,6.15\n" +
"2015-03-05,6.19\n" +
"2015-03-04,6.40\n" +
"2015-03-03,6.32\n" +
"2015-03-02,6.51\n" +
"2015-02-27,7.00\n" +
"2015-02-26,7.30\n" +
"2015-02-25,7.50\n" +
"2015-02-24,6.88\n" +
"2015-02-23,6.05\n" +
"2015-02-20,6.05\n" +
"2015-02-19,6.09\n" +
"2015-02-18,5.90\n" +
"2015-02-17,5.98\n" +
"2015-02-16,6.00\n" +
"2015-02-13,6.20\n" +
"2015-02-12,5.54\n" +
"2015-02-11,5.25\n" +
"2015-02-10,5.64\n" +
"2015-02-09,5.18\n" +
"2015-02-06,5.15\n" +
"2015-02-05,5.27\n" +
"2015-02-04,5.50\n" +
"2015-02-03,5.69\n" +
"2015-02-02,5.12\n" +
"2015-01-30,4.80\n" +
"2015-01-29,4.78\n" +
"2015-01-28,4.45\n" +
"2015-01-27,5.17\n" +
"2015-01-26,5.82\n" +
"2015-01-23,5.63\n" +
"2015-01-22,5.16\n" +
"2015-01-21,4.94\n" +
"2015-01-20,5.18\n" +
"2015-01-19,5.20\n" +
"2015-01-16,4.77\n" +
"2015-01-15,4.90\n" +
"2015-01-14,5.03\n" +
"2015-01-13,5.31\n" +
"2015-01-12,5.20\n" +
"2015-01-09,4.93\n" +
"2015-01-08,4.76\n" +
"2015-01-07,4.97\n" +
"2015-01-06,5.07\n" +
"2015-01-05,5.07\n" +
"2015-01-02,5.55\n" +
"2015-01-01,5.40\n" +
"2015-10-28,10";
};
$(document).ready(function () {
// Get your data from somewhere
var data = csvData();
// Set highlight start and end
var highlight_start = new Date('2015/09/17');
var highlight_end = new Date('2015/10/28');
g = new Dygraph(
document.getElementById("graphdiv"),
data,
{
animatedZooms: true,
underlayCallback: function(canvas, area, g) {
var bottom_left = g.toDomCoords(highlight_start,0);
var top_right = g.toDomCoords(highlight_end,2500);
console.log(bottom_left);
console.log(top_right);
var left = bottom_left[0];
var right = top_right[0];
canvas.fillStyle = "rgba(255, 255, 102, 1.0)";
canvas.fillRect(left, area.y, right - left, area.h);
}
}
);
g.setAnnotations([
{
series: "Temperature",
x: "2015-05-08",
shortText: "L",
text: "Coldest Day"
}
]);
});
</script>
</head>
<body>
<div id="graphdiv" style="width:600px; height:300px;"></div>
<div id="div_g" style="width:600px; height:300px;"></div>
<p>When you zoom and pan, the region remains highlighted.</p>
</body>
</html>
我尝试添加注释，如 http://dygraphs.com/annotations.html 中所述：
g.setAnnotations([
{
series: "Temperature",
x: "2015-05-08",
shortText: "L",
text: "Coldest Day"
}
]);
但是注释没有出现。我做错了什么？
将 series 更改为您的其中一个列名，例如Close Price:
g.setAnnotations([
{
series: "Close Price",
x: "2015-05-08",
shortText: "L",
text: "Coldest Day"
}
]);