I am trying to add accessibility to an donut chart created using Highcharts.
Html code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>Donut highcahrt with accessibility</title>
<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/modules/accessibility.js"></script>
</head>
<body>
<figure>
<div id="chart-container"></div>
<p class="highcharts-description">Chart showing how 2020 has seen a massive growth in sales compared to 2019 and 2018. hahahaha!!!</p>
</figure>
</body>
</html>
JS code
// Create the chart
chart = new Highcharts.Chart({
chart: {
renderTo: 'chart-container',
type: 'pie'
},
title: {
text: 'Browser market share, April, 2011'
},
yAxis: {
title: {
text: 'Total percent market share'
}
},
plotOptions: {
pie: {
shadow: false
}
},
tooltip: {
formatter: function() {
return '<b>'+ this.point.name +'</b>: '+ this.y +' %';
}
},
series: [{
name: 'Browsers',
data: [["Firefox",6],["MSIE",4]],
size: '20%',
innerSize: '85%',color:['red','red'],
showInLegend:true,
dataLabels: {
enabled: false
}
}]
});
The JSFiddle.
When I use NVDA with Firefox(version 83) on Windows 7, the screen reader doesn't read the description specified in the HTML as specified in the documentation(https://www.highcharts.com/docs/accessibility/accessibility-module). Same is the case for JAWS on IE.
my json.data file is in the same directory as my index.html file. data.json file looks like this:
{
data:
[
[1369540800000,20]
]
}
when I do:
alert(JSON.stringify(jsonData, null, 4));
I get this back, so I get the values. Still dont know what is wrong.
{
"data":[
[
1369540800000,
10
],
[
1369541700000,
20
]
]
}
my html file including java script to build the charts is below:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html;charset=utf-8">
<title>HIGHTCHARTS</title>
<style>
body
{
font: 10px arial;
}
</style>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script src="http://code.highcharts.com/highcharts.js"></script>
<script type="text/javascript">
$(function () {
var chart;
$.getJSON('data.json', function(jsonData) {
chartOptions.series = jsonData;
chart = new Highcharts.Chart(chartOptions);
});
var chartOptions = {
chart: {
renderTo: 'container'
},
xAxis: {
type: 'datetime'
},
series: []
};
});
</script>
</head>
<body>
<div id="container" style="width:100%; height:400px;"></div>
</body>
</html>
I see the chart title but I dont see any charts or data points. What am I missing here?
Your data is not in the right format. Familiarize yourself with how to format data for Highcharts.
These may help:
http://api.highcharts.com/highcharts#series.data
http://docs.highcharts.com/#preprocesssing-data-from-a-file
Notably:
1) your dates must be either a javascript time stamp (epoch time, in milliseconds), or a date.Utc declaration
2) your structure needs to be like:
[[date, value],[date,value],[date,value]]
this is what I had to do to make it work:
<script src="js/highcharts.js"></script>
<script type="text/javascript">
$(document).ready(function() {
var options = {
chart: {
renderTo: 'container',
type: 'area'
},
xAxis: {
type: 'datetime'
},
series: [{}]
};
$.getJSON('dude.json', function(data) {
options.series[0].data = data;
var chart = new Highcharts.Chart(options);
});
});
</script>
I am trying to use highcharts to build a charts. I have the below code:
my data.json file looks like this:
{"DATETIME":[1369540800,1369541700,1369542600,1369543500,1369544400,1369545300,1369546200,1369547100,1369548000,1369548900],"CPU":[14.84,13.6333333333333,14.7666666666667,13.5333333333333,17.8666666666667,15.9333333333333,14.2333333333333,13.3,10.8333333333333,9.76666666666667]}
HIGHTCHARTS
<style>
body
{
font: 10px arial;
}
</style>
<script src="jquery.min.js"></script>
<script src="js/highcharts.js"></script>
<script type="text/javascript">
$(function () {
$.getJSON('data.json', function(data) {
$('#container').highcharts({
chart: {
type: 'line'
},
title: {
text: 'CPU UTILIZATION'
},
xAxis: {
categories: ['Date']
},
yAxis: {
title: {
text: '% CPU Utilization'
}
},
series: [{
data: data,
}]
});
});
});
</script>
</head>
<body>
<div id="container" style="width:100%; height:400px;"></div>
</body>
I dont see any values, dada.json file is in the same directory as index.html file. Any ideas what I am missing here?
Your JSON should have data name instead of datetime. Morever I see only dates, not y values.
"DATETIME":
should be
"data":
I use highcharts to display a chart in my page.
It works fine, but some times data in graph is too "condensed" so I should find a way to see the graph in a greater size.
I read several posts over internet on this subject:
- in general they suggest to use highslide, but i don't want to, as my page is already overlaoded by scripts
-somebody tries to pop up the content in a popup, it could fit to me but I didn't succeed
- the only quasi-working example which fits to me seems to be the following:
(inside the options object I add this properties).
exporting: {
buttons: {
popUpBtn: {
symbol: 'square',
_titleKey: 'FullScreenButtonTitle',
x: -60,
symbolSize:18,
symbolFill: '#B5C9DF',
hoverSymbolFill: '#779ABF',
onclick: function () {
var win=window.open('','','location=0,titlebar=0,status=0,width=780,height=350');
win.focus();
var divtag = win.document.createElement("div");
divtag.id = "div1";
win.document.body.appendChild(divtag);
win.document.write('<script type="text/javascript" src="script/highcharts/js/highcharts.js"></script>\
<script type="text/javascript" src="script/highcharts/js/modules/exporting.js"></script>');
this.options.renderTo=divtag;
var chart = new Highcharts.Chart(this.options);
win.document.close();
}
},
exportButton: {
enabled: true
},
printButton: {
enabled: true
}
}
}
However it is not working, as the div tag is not inserted and all i get is this
<html>
<head>
<script type="text/javascript" src="script/highcharts/js/highcharts.js"> </script>
<script type="text/javascript" src="script/highcharts/js/modules/exporting.js"></script>
</head></html>
I can't understand the error.
I know it should be something simple but I can't get out alone.
--EDIT ---
I finally understood which could be a working strategy: create a "chartpopup.html" page, and passing it the parameters needed to build the copy of the graph I visualize.
So now I have:
index.html:
chartOptions = {
series: [
{
name: 'example',
data: [83.6, 78.8, 98.5, 93.4, 106.0]
}]
//// CUT SOME CODE
exporting: {
buttons: {
popUpBtn: {
enabled:true,
symbol: 'square',
_titleKey: 'FullScreenButtonTitle',
x: -60,
symbolSize:18,
symbolFill: '#B5C9DF',
hoverSymbolFill: '#779ABF',
onclick: function () {
look this!--------> generalPurposeGlobalVar = this;
var win=window.open('./chartpopup.html','Full Size Chart','location=0,titlebar=0,status=0,width=780,height=650');
}
},
exportButton: {
enabled: true
},
printButton: {
enabled: true
}
}
}
};
this.highChart=new Highcharts.Chart(this.chartOptions);
and chartpopup.html:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Chart full Size</title>
<script type="text/javascript" src="script/jquery-1.7.1-min.js"></script>
<script type="text/javascript" src="script/highcharts/js/highcharts.js"></script>
<script type="text/javascript" src="script/highcharts/js/modules/exporting.js"> </script>
</head>
<body>
<div id="container" style="min-width: 400px; height: 650; margin: 0 auto"></div>
<script>
var chart;
$(document).ready(function() {
var mychart=window.opener.generalPurposeGlobalVar;
mychart.options.chart.renderTo= 'container';
chart = new Highcharts.Chart(mychart.options);
});
</script>
</body>
</html>
This two pages are actually working ONLY with the default graph. If I modify and re-render the graph, I'm not able to reproduce it on the popup page!
The code I use to modify the graph is basically this:
this.chartOptions.series=[{name:field.split('_').join('\n')}];
this.highChart.destroy();
this.highChart=new Highcharts.Chart(this.chartOptions);
this.highChart.xAxis[0].setCategories(_.isEmpty(mygroups) ? [] : mygroups);
this.highChart.series[0].setData([]);
this.highChart.setTitle({text: this.highChart.title.text},{text:(field.split('_').join(' ')), });
this.highChart.redraw();//
[...]
self.highChart.series[0].addPoint(result);//it's a point I calculated before
Here is an Highcharts exemple working with an "oldschool" popup :
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>highcharts foobar</title>
</head>
<body>
Open Chart Popup
<script>
function open_chart_popup() {
window.open('popup.html', 'chart popup title', 'width=1680px height=1050px');
}
</script>
</body>
</html>
popup.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>highcharts foobar</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script src="http://code.highcharts.com/highcharts.js"></script>
<script src="http://code.highcharts.com/modules/exporting.js"></script>
</head>
<body>
<div id="container" style="min-width: 400px; height: 400px; margin: 0 auto"></div>
<script>
var chart;
$(document).ready(function() {
chart = new Highcharts.Chart({
chart: {
renderTo: 'container',
type: 'line',
marginRight: 130,
marginBottom: 25
},
title: {
text: 'Monthly Average Temperature',
x: -20 //center
},
subtitle: {
text: 'Source: WorldClimate.com',
x: -20
},
xAxis: {
categories: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
},
yAxis: {
title: {
text: 'Temperature (°C)'
},
plotLines: [{
value: 0,
width: 1,
color: '#808080'
}]
},
tooltip: {
formatter: function() {
return '<b>'+ this.series.name +'</b><br/>'+
this.x +': '+ this.y +'°C';
}
},
legend: {
layout: 'vertical',
align: 'right',
verticalAlign: 'top',
x: -10,
y: 100,
borderWidth: 0
},
series: [{
name: 'Tokyo',
data: [7.0, 6.9, 9.5, 14.5, 18.2, 21.5, 25.2, 26.5, 23.3, 18.3, 13.9, 9.6]
}, {
name: 'New York',
data: [-0.2, 0.8, 5.7, 11.3, 17.0, 22.0, 24.8, 24.1, 20.1, 14.1, 8.6, 2.5]
}, {
name: 'Berlin',
data: [-0.9, 0.6, 3.5, 8.4, 13.5, 17.0, 18.6, 17.9, 14.3, 9.0, 3.9, 1.0]
}, {
name: 'London',
data: [3.9, 4.2, 5.7, 8.5, 11.9, 15.2, 17.0, 16.6, 14.2, 10.3, 6.6, 4.8]
}]
});
});
</script>
</body>
</html>
If this solution doesn't fit to you, could you tell us which JavaScript libraries you use (this example relies on jQuery). As the documentation says, highcharts requires either jQuery, Mootools or Prototype : http://www.highcharts.com/documentation/how-to-use
If you are able to use jQuery, you can replace that popup by using some cooler effects like those ones : http://jqueryui.com/demos/dialog/
Despite of that, if you want assistance for your script, could you consider making a jsfiddle, i'm not able to reproduce your error.
EDIT :
Okay, so you have all the stuff to deal with that.
I see two options :
You send the user input series JSON data to your server by an AJAX request. Then your server send you back a view or a bunch of html/js containing your highchart with the user datas. Back to the client, you do wathever you want with that (like triggering a popup containing the graph). I'm not too comfortable with backbone but i'm sure you can generate a template and render it back (this may help http://japhr.blogspot.fr/2011/08/getting-started-with-backbonejs-view.html)
The other solution would be to directly set your template (containing the graph) to the view but hidding him by default. Then, when the series are correctly setted by the user, you simply display the template (in a popup for example). This solution avoid a server call, so I would suggest that.
EDIT 2 :
So, I've made a jsFiddle showing a basic example on how to update a chart based on a user input : http://jsfiddle.net/MxtkM/
The example updates the last value of all the series on the graph, here is how :
$('#december_value').bind('keyup', function() {
var user_input_value = parseFloat($(this).val()); // cast to float
for (var s in chart.series) { // loop through the series
var old_data = chart.series[s].data;
var new_data = [];
for (var d in old_data ) { // loop through data objects
new_data.push(old_data[d].config); // config property contains the y value
}
new_data[new_data.length - 1] = user_input_value; // update the last value
chart.series[s].setData(new_data); // use setData method to refresh the datas of the serie
}
});
This example use the method setData by providing a new data array.
If this doesn't fit your needs, there is an another method to refresh your graph in whitch you rerender all the graph by doing var chart = new Highcharts.Chart(options);. (This is explained in the links above).
This two links are also a good read :
Reload chart data via JSON with Highcharts
http://www.highcharts.com/documentation/how-to-use (part 3 and 4)
Now you shoud be able to do whatever you want with your graph based on a user input.
After wandering around and asking questions, I found out that the best way to do it is to make fullscreen the div that contains the chart.
It's a very simple solution but it works.
This post is very helpful How do I make a div full screen?
A function like the following should do the trick on a "#graph" div:
function fullscr() {
$('#graph').css({
width: $(window).width(),
height: $(window).height()
});
}
Hope this help.
The Best solution will be HTML5 Fullscreen API for fullscreen
function fullScreen(){
var elem = document.getElementById("highchart_div_id");
if (elem.requestFullscreen) {
elem.requestFullscreen();
} else if (elem.msRequestFullscreen) {
elem.msRequestFullscreen();
} else if (elem.mozRequestFullScreen) {
elem.mozRequestFullScreen();
} else if (elem.webkitRequestFullscreen) {
elem.webkitRequestFullscreen();
}
}
However, this piece of code only works in New Generation Browsers and I have hands on working output from Google chrome and Mozilla Firefox
Good Day
Has anyone managed to integrate highcharts with jquerymobile properly?
If i request a page containing some chart directly (i.e. http://mysite.com/mobile/page.html) the charts will initialize and render as expected. Instead, if i try to navigate to the same page using the anchor links, the page renders but the charts don't. I am using the "pageshow" event to initialize the charts.
Any feedback will be largely appreciated!
I had this same problem when I first started coding with jQuery Mobile... You have to bind your scripts on pagecreate, ie:
$(document).delegate("#page-id", "pagecreate", function() {
// highcharts, etc.
}
With jQuery mobile you need to put your page specific scripts and styles inside the page-content div. See "Known Limitations" in documentation.
I have tried what Tsar mentioned and for me it worked. What I did was:
Added the script within the head tag,
and added the div with the ID(rederTo) used in the script within the "page-content".
<html>
<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<title>Acura</title>
<link href="http://code.jquery.com/mobile/latest/jquery.mobile.min.css" rel="stylesheet">
<script src="http://code.jquery.com/jquery.min.js"></script>
<script src="http://code.jquery.com/mobile/latest/jquery.mobile.min.js"></script>
<script src="libs/hightcharts/highcharts.js"></script>
<script src="http://code.highcharts.com/modules/exporting.js"></script>
<script type="text/javascript">
var chart1; // globally available
$(document).ready(function() {
chart1 = new Highcharts.Chart({
chart: {
renderTo: 'container',
type: 'bar'
},
title: {
text: 'Fruit Consumption'
},
xAxis: {
categories: ['Apples', 'Bananas', 'Oranges']
},
yAxis: {
title: {
text: 'Fruit eaten'
}
},
series: [{
name: 'Jane',
data: [1, 0, 4]
}, {
name: 'John',
data: [5, 7, 3]
}]
});
});
</script>
</head>
<body>
<div id="ge" data-role="page">
<div data-role="header">
//header
</div>
<div data-role="content">
<div id="container"></div>
</div>
</div>
</body>
</html>