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Highcharts Not displaying function's data values

i Have created a Highchart using the Following Highchart's Demo:
https://www.highcharts.com/demo/dynamic-update
Now What I did I created my Own function to add dynamic values to the Chart.
I created a function to get the dynamic data from a particular php file whose data changes on every page load event.
I am getting the data values in the getData function console.log
Here is the Script That I am using.
<script type="text/javascript">
$(document).ready(function(){
function getData(){
$.ajax({
type: 'GET',
url: 'data.php',
success: function(data){
// var number = document.write(data) ;
console.log(data);
return data ;
}
}) ;
}
Highcharts.chart('chart', {
chart: {
type: 'spline',
animation: Highcharts.svg, // don't animate in old IE
marginRight: 10,
events: {
load: function () {
// set up the updating of the chart each second
var series = this.series[0];
setInterval(function () {
var x = (new Date()).getTime(), // current time
y = getData();
console.log(y);
series.addPoint([x, y], true, true);
}, 1000);
}
}
},
time: {
useUTC: false
},
title: {
text: 'Live random data'
},
xAxis: {
type: 'datetime',
tickPixelInterval: 150
},
yAxis: {
title: {
text: 'Value'
},
plotLines: [{
value: 0,
width: 1,
color: '#808080'
}]
},
tooltip: {
headerFormat: '<b>{series.name}</b><br/>',
pointFormat: '{point.x:%Y-%m-%d %H:%M:%S}<br/>{point.y:.2f}'
},
legend: {
enabled: false
},
exporting: {
enabled: false
},
series: [{
name: 'Random data',
data: (function () {
// generate an array of random data
var data = [],
time = (new Date()).getTime(),
i;
for (i = -19; i <= 0; i += 1) {
data.push({
x: time + i * 1000,
y: getData()
});
}
return data;
}())
}]
});
});
</script>
Now as you can see that I have created a getData function and getting the data value in return.
On console log under the getData function, I am getting integer Value in return every one second.
the problem is that under the Highchart's function, I am not able to get the data values using getData function, it's returning undefined in the console .
Highchart's is running but it does not show any data points. it is moving but without showing any data points.
Please correct me in the area , where I am doing wrong.
Any help is appreciated. Thanks

ajax calls are run asynchronously so you cant really return data from it.
instead you should render chart inside the ajax success function.
A good example is here already.
https://www.highcharts.com/docs/working-with-data/live-data
Basically
1. point on load to call a function getData
2. in Getdata call ajax function.
3. in success of ajax render chart with new data.
document.addEventListener('DOMContentLoaded', function() {
chart = Highcharts.chart('container', {
chart: {
type: 'spline',
events: {
load: requestData
}
},
title: {
text: 'Live random data'
},
xAxis: {
type: 'datetime',
tickPixelInterval: 150,
maxZoom: 20 * 1000
},
yAxis: {
minPadding: 0.2,
maxPadding: 0.2,
title: {
text: 'Value',
margin: 80
}
},
series: [{
name: 'Random data',
data: []
}]
});
});
/**
* Request data from the server, add it to the graph and set a timeout
* to request again
*/
function requestData() {
$.ajax({
url: 'live-server-data.php',
success: function(point) {
var series = chart.series[0],
shift = series.data.length > 20; // shift if the series is
// longer than 20
// add the point
chart.series[0].addPoint(point, true, shift);
// call it again after one second - add this if you want to auto refresh
// setTimeout(requestData, 1000);
},
cache: false
});
}

Highcharts showing ticks number, instead of date

I'm trying to create a graph from JSON received from a web API.
I had it working, and then decided to start refactoring.
After a while I suddenly noticed that the xAxis no longer shows dates, but instead it seems to be showing ticks.
I'm quite inexperienced with JavaScript and even more so with highcharts so I cannot spot my mistake.
(source: mortentoudahl.dk)
The change I did was making an option object, and pass it to highcharts upon instantiation, according to the instructions found here:
http://www.highcharts.com/docs/getting-started/how-to-set-options
When I compare my code to the last code block in that link, it seems to be the same, except for the options object.
var pm10 = [];
var pm25 = [];
var options = {
chart: {
zoomType: 'x',
renderTo: 'container'
},
title: {
text: "Compounds in the air at HCAB"
},
subtitle: {
text: document.ontouchstart === undefined ? 'Click and drag in the plot area to zoom in' : "Pinch the chart to zoom in"
},
xAxix: {
type: 'datetime'
},
yAxis: {
title: {
text: 'µg/m³'
}
},
series: [{
name: 'Particles less than 2.5 µm',
data: pm25,
pointStart: Date.UTC(2016, 5, 8),
pointInterval: 86400 * 1000 // One day
}, {
name: 'Particles less than 10 µm',
data: pm10,
pointStart: Date.UTC(2016, 5, 8),
pointInterval: 86400 * 1000 // One day
}]
};
function ReverseAndSetArrays(data) {
$.each(data.reverse(), function(key, value) {
if ("PM10b" in value) {
pm10.push(value["PM10b"]);
};
if (!("PM10b" in value)) {
pm10.push(null);
};
if ("PM25b" in value) {
pm25.push(value["PM25b"]);
};
if (!("PM25b" in value)) {
pm25.push(null);
};
});
};
var url = "super secret url";
$.getJSON(url, function(data) {
ReverseAndSetArrays(data);
var chart = new Highcharts.Chart(options);
});
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="//code.highcharts.com/highcharts.js"></script>
<div id="container"></div>

The following configuration in your options object is incorrect:
xAxix: {
type: 'datetime'
}
It should be:
xAxis: {
type: 'datetime'
}

Highchart xAxis label steps wrong

I am loading Highcharts like this.
var options = {
credits: {
enabled: false
},
chart: {
renderTo: 'chart_box',
type: 'areaspline'
},
title: {
text: ''
},
xAxis: {
crosshairs: true,
labels: {
step: 5,
rotation: -45
}
},
series: []
};
Then I have a function which is called when graph needs to be loaded. Upon calling the function, data is fetched through AJAX and assigned to series and date lie this:
$.ajax({
url: 'url/charts',
type: 'post',
data: data
}).done(function(data) {
var dateCount = data.dates.length;
var stepCount = 1;
if (dateCount > 10) {
stepCount = 5;
}
options.xAxis.categories = data.dates;
$.each(data.series, function(name, elem) {
options.series.push({
name: name.replace('_', ' ').toUpperCase().trim(),
data: elem
})
});
chart = new Highcharts.Chart(options);
});
The issue here is that even though I have given step as 5 , it is showing dates with 15 dates interval. I mean in xAxis labels. It seems like it will be multiplied by three always. If I give 2, it will show 6 days interval in labels. Everything working fine in a chart which is not using AJAX to load data.

Highcharts Map not rendering no errors

I am attempting to take the example produced by Highcharts here http://www.highcharts.com/maps/demo/color-axis and substitute the data loaded by the $.getJson with a local JSON file called 'testdata1.json'.
The code I've modified below produces no errors yet the map does not render. I think it's because the testdata1.json is loaded late, after the javascript is executed. If so, is there a better way I should be doing this -- perhaps waiting for the data to load before executing the JS file? I attempted to do this by placing a
$(document).ready(
in front of the function but it didn't work. Any thoughts are greatly appreciated, I think it's something relatively minor that is just escaping me.
Thank you.
$(function () {
// Map options
var options = {
chart : {
renderTo: '#map',
borderWidth : 1
},
title : {
text : 'US population density (/km²)'
},
legend: {
layout: 'horizontal',
borderWidth: 0,
backgroundColor: 'rgba(255,255,255,0.85)',
floating: true,
verticalAlign: 'top',
y: 25
},
mapNavigation: {
enabled: true
},
colorAxis: {
min: 1,
type: 'logarithmic',
minColor: '#EEEEFF',
maxColor: '#000022',
stops: [
[0, '#EFEFFF'],
[0.67, '#4444FF'],
[1, '#000022']
]
},
series : [{
animation: {
duration: 1000
},
mapData: Highcharts.maps['countries/us/us-all'],
joinBy: ['postal-code', 'code'],
dataLabels: {
enabled: true,
color: 'white',
format: '{point.code}'
},
name: 'Population density',
tooltip: {
pointFormat: '{point.code}: {point.value}/km²'
}
}]
};
$.getJSON('static/data/testdata1.json', function (data) {
// Make codes uppercase to match the map data
$.each(data, function () {
this.code = this.code.toUpperCase();
});
options.series.data= data;
var chart = new Highcharts.Chart(options)
});
});

You have three problems. Here's a fiddle based on their sample that uses your approach, but still uses their data, and works: http://jsfiddle.net/g29k24vw/1/
Here are the important parts:
chart : {
renderTo: 'container',
borderWidth : 1,
type: 'map'
},
And:
$.getJSON('http://www.highcharts.com/samples/data/jsonp.php?filename=us-population-density.json&callback=?', function (data) {
// Make codes uppercase to match the map data
$.each(data, function () {
this.code = this.code.toUpperCase();
});
options.series[0].data= data;
var chart = new Highcharts.Chart(options);
});
Note the differences here:
You need to specify the chart type in options if you're going to instantiate the chart object directly instead of using the jQuery helper.
renderTo doesn't want a hash in front of the element name.
options.series[0].data, not options.series.data...series is actually an array of objects.

dynamic highcharts with json data

I m trying to figure it out that is it possible to make the json data fetched dynamically from a database with the help of php and mysql and can be plotted with highcharts that too dynamic auto updating? Any help would be appreciated.
following the code i have tried and is not working properly and want to implement to the the website for 10 lines.
<HTML>
<HEAD>
<TITLE>highchart example</TITLE>
<script type="text/javascript"src="http://code.jquery.com/jquery-1.10.1.min.js"></script>
<script src="http://code.highcharts.com/highcharts.js"></script>
<script src="http://code.highcharts.com/modules/exporting.js"></script>
<script type="text/javascript">
var chart;
function requestData() {
$.ajax({
url: 'live-server-data.php',
success: function(point) {
var series = chart.series[0],
shift = series.data.length > 20; // shift if the series is
// longer than 2
// add the point
chart.series[0].addPoint(point, true, shift);
// call it again after one second
setTimeout(requestData1, 1000);
},
cache: false,
});
}
function requestData1() {
$.ajax({
url: 'live-server-data.php',
success: function(point) {
var series2 = chart.series[1],
shift = series2.data.length > 20; // shift if the series is
// longer than 20
// add the point
chart.series[1].addPoint(point, true, shift);
// call it again after one second
setTimeout(requestData, 1000);
},
cache: false,
});
}
$(function () {
$(document).ready(function() {
chart = new Highcharts.Chart({
chart: {
renderTo: 'container',
defaultSeriesType: 'spline',
events: {
load: requestData
}
},
title: {
text: 'Live random data'
},
xAxis: {
type: 'datetime',
tickPixelInterval: 150,
maxZoom: 20 * 1000
},
yAxis:
{
minPadding: 0.2,
maxPadding: 0.2,
title: {
text: '',
margin: 80
}
},
series: [
{
name: 'Random data',
data: []
},
{
name: ' hahaha',
data: []
}
],
});
});
});
</script>
</HEAD>
<BODY>
<div id="container"
style="min-width: 728px; height: 400px; margin: 0 auto"></div>
</BODY>
</HTML>
*** the live-server-data.php is as followed:
<?php
// Set the JSON header
header("Content-type: text/json");
// The x value is the current JavaScript time, which is the Unix time multiplied
// by 1000.
$x = time() * 1000;
// The y value is a random number
$y = rand(48,52);
// Create a PHP array and echo it as JSON
$ret = array($x, $y);
echo json_encode($ret);
?>

You can try with
var options = {
chart: {
renderTo: 'chart',
},
credits: {
enabled: false
},
title: {
text: 'Impression/Click Overview',
x: -20
},
xAxis: {
categories: [{}]
},
tooltip: {
formatter: function() {
var s = '<b>'+ this.x +'</b>';
$.each(this.points, function(i, point) {
s += '<br/>'+point.series.name+': '+point.y;
});
return s;
},
shared: true
},
series: [{},{}]
};
$.ajax({
url: "json.php",
data: 'show=impression',
type:'post',
dataType: "json",
success: function(data){
options.xAxis.categories = data.categories;
options.series[0].name = 'Impression';
options.series[0].data = data.impression;
options.series[1].name = 'Click';
options.series[1].data = data.clicks;
var chart = new Highcharts.Chart(options);
}
});

The highcharts website has some useful articles about working with dynamic data. That is probably the best place to start.
http://www.highcharts.com/docs/working-with-data/preprocessing-live-data
http://www.highcharts.com/docs/working-with-data/preprocessing-data-from-a-database
Try something out, and if you have trouble, come back here with a more specific question showing what you have tried. As it stands, your question is too broad, and will probably get closed.
An ajax request for updating data looks something like:
function requestData() {
$.ajax({
url: 'live-server-data.php',
success: function(point) {
var series = chart.series[0],
shift = series.data.length > 20; // shift if the series is // longer than 20
// add the point
chart.series[0].addPoint(point, true, shift);
// call it again after one second
setTimeout(requestData, 1000);
},
cache: false
});
}