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Updating highcharts live data not working

I have some UV Sensors (currently running on Thingspeak) - but I need to have multiple series on the same chart, so I made a sample .php page on my website.
I have the basic chart working nicely, but I have not been able to get it to do live updates - my coding skills are very lacking & I would appreciate any help I can get!
The sample chart is here: http://www.sesupply.co.nz/test.php
I have the code on JSFiddle here: https://jsfiddle.net/SESupply/9xn65qrL/9/
// variables for the first series
var series_1_channel_id = 43330;
var series_1_field_number = 4;
var series_1_read_api_key = '7ZPHNX2SXPM0CA1K';
var series_1_results = 480;
var series_1_color = '#d62020';
var series_1_name = 'Zims Sensor';
// variables for the second series
var series_2_channel_id = 45473;
var series_2_field_number = 2;
var series_2_read_api_key = 'N12T3CWQB5IWJAU9';
var series_2_results = 480;
var series_2_color = '#00aaff';
var series_2_name = 'UVM30A';
// chart title
var chart_title = 'UV Sensors Zim / UVM30A';
// y axis title
var y_axis_title = 'UV Index';
// user's timezone offset
var my_offset = new Date().getTimezoneOffset();
// chart variable
var my_chart;
// when the document is ready
$(document).on('ready', function () {
// add a blank chart
addChart();
// add the first series
addSeries(series_1_channel_id, series_1_field_number, series_1_read_api_key, series_1_results, series_1_color, series_1_name);
// add the second series
addSeries(series_2_channel_id, series_2_field_number, series_2_read_api_key, series_2_results, series_2_color, series_2_name);
});
// add the base chart
function addChart() {
// variable for the local date in milliseconds
var localDate;
// specify the chart options
var chartOptions = {
chart: {
renderTo: 'chart-container',
defaultSeriesType: 'spline',
zoomType: 'x', // added here
panning: true,
panKey: 'shift',
backgroundColor: '#ffffff',
events: {
load: addSeries
}
},
title: {
text: chart_title
},
subtitle: {
text: 'Click and drag to zoom in. Hold down shift key to pan.'
},
plotOptions: {
series: {
marker: {
radius: 2
},
animation: true,
step: false,
borderWidth: 0,
turboThreshold: 0
}
},
scrollbar: {
enabled: true
// barBackgroundColor: 'gray',
// barBorderRadius: 7,
// barBorderWidth: 0,
// buttonBackgroundColor: 'gray',
// buttonBorderWidth: 0,
// buttonArrowColor: 'yellow',
// buttonBorderRadius: 7,
// rifleColor: 'yellow',
// trackBackgroundColor: 'white',
// trackBorderWidth: 1,
// trackBorderColor: 'silver',
// trackBorderRadius: 7
},
tooltip: {
// reformat the tooltips so that local times are displayed
formatter: function () {
var d = new Date(this.x + (my_offset * 60000));
var n = (this.point.name === undefined) ? '' : '<br>' + this.point.name;
return this.series.name + ':<b>' + this.y + '</b>' + n + '<br>' + d.toDateString() + '<br>' + d.toTimeString().replace(/\(.*\)/, "");
}
},
xAxis: {
type: 'datetime',
title: {
text: 'Date'
}
},
rangeSelector: {
enabled: true,
buttons: [{
type: 'minute',
count: 60,
text: 'Hour'
}, {
type: 'day',
count: 1,
text: 'Day'
}, {
type: 'week',
count: 1,
text: 'Week'
}, {
type: 'all',
text: 'All'
}]
},
yAxis: {
title: {
text: y_axis_title
}
},
exporting: {
enabled: true
},
legend: {
enabled: true
},
credits: {
text: 'ThingSpeak.com',
href: 'https://thingspeak.com/',
style: {
color: '#D62020'
}
}
};
// draw the chart
my_chart = new Highcharts.Chart(chartOptions);
}
// add a series to the chart
function addSeries(channel_id, field_number, api_key, results, color, name) {
var field_name = 'field' + field_number;
// get the data with a webservice call
$.getJSON('https://api.thingspeak.com/channels/' + channel_id + '/fields/' + field_number + '.json?offset=0&round=2&results=' + results + '&api_key=' + api_key, function (data) {
// blank array for holding chart data
var chart_data = [];
// iterate through each feed
$.each(data.feeds, function () {
var point = new Highcharts.Point();
// set the proper values
var value = this[field_name];
point.x = getChartDate(this.created_at);
point.y = parseFloat(value);
// add location if possible
if (this.location) {
point.name = this.location;
}
// if a numerical value exists add it
if (!isNaN(parseInt(value))) {
chart_data.push(point);
}
});
// add the chart data
my_chart.addSeries({
data: chart_data,
name: name,
color: color
});
});
setTimeout(addSeries, 1000);
}
cache: false;
// converts date format from JSON
function getChartDate(d) {
// offset in minutes is converted to milliseconds and subtracted so that chart's x-axis is correct
return Date.parse(d) - (my_offset * 60000);
}
I have tried following the livedata example but seem to be failing miserably. The sensors update about every 60 seconds (only during the day - as there is no UV at night, I put the sensors into "sleep" mode to save battery power)

Displaying time based logs in in HighCharts

I need to display time value of some logs which I fetch from a device,on X-axis of a column graph. The column graph has constant values for Y-axis, basically I want the logs to be shown as sticks as the logs are fetched.
The logs have the following date,time format : 2015-05-07T06:08:54.430062Z
I understand this is the ISO format, so I convert "06:08:54.430062" to milliseconds using
var myDate = new Date(dt);
var result = myDate.getTime();
The result obtained is like this 1430978934438. It so happens that when I convert I get similar values for other logs as well, even if they have a different time instant.
So suppose I have 10 logs, the graph only shows 4 of them. I use
var value=10;// this is a fixed constant value, since I want the log sticks to be of same height.
series.addPoint([result , value], false, false);
How can I see all the logs as sticks corresponding to each log entry ?
If you need more information, let me know. I am fairly new to HighCharts and JS, so any help in the right direction would be really helpful.
Thanks
Added code below
for (var i = 0; i < nSeries; i++) {
dt=jsonData[i].isodate;
var myDate = new Date(dt);
var result = myDate.getTime();
var series = mychart.series[0];
series.addPoint([result, value], false, false);
}
mychart.redraw();
instance.create = function(Highcharts, container) {
Highcharts.setOptions({
global: {
useUTC: false
}
});
var self = this;
mychart = new Highcharts.Chart({
chart: {
renderTo: container,
defaultSeriesType: 'column',
plotBorderWidth: 1,
showAxes: true,
animation: Highcharts.svg
},
title: {
text: 'Logs'
},
xAxis: {
type: 'datetime',
events: {
setExtremes: function (e) {
console.log('e.min: ' + Highcharts.dateFormat(null, e.min) +
' | e.max: ' + Highcharts.dateFormat(null, e.max) + ' | e.trigger: ' + e.trigger);
if (e.trigger) {
self.autoScroll = false;
}
}
}
},
yAxis: {
title: {
text: ''
}
},
tooltip: {
formatter: function () {
console.log(this);
return '<b>' + this.series.name + '</b><br/>' +
Highcharts.dateFormat('%H:%M:%S.%L', this.x) + '<br/>'+this.key;
}
},
legend: {
enabled: true
},
exporting: {
enabled: true
},
plotOptions: {
column: {
stacking: null
}
},
scrollbar: {
enabled: true
},
series: [{
name: 'Logs',
data: [],
stack: 'LogStack'
}]
});
};

Highcharts not Drawing point on setInterval

I have data being put on an api every 30 seconds on a backend. On the frontend I am using highcharts to visualize the data and a setInterval setup to retrieve the new data every 30 seconds. My problem is that on that setInterval, the line graph disappears or does not draw to the next new dot. Does anyone now why this is?
fiddle: http://jsfiddle.net/b8tf281n/3/
code:
chart1 = {
yAxisMin: 40,
yAxisMax: 100
};
// empty objects for our data and to create chart
seriesData = [];
BPM = [];
time1 = [];
// console.log(chart1.data.series);
$(function () {
$(document).ready(function () {
Highcharts.setOptions({
global: {
useUTC: false
}
});
var url = 'http://msbandhealth.azurewebsites.net/odata/PulsesAPI/';
$.ajax({
url: url,
dataType: 'json',
context: seriesData,
success: function (data) {
// structure our data
for (var i = 0; i < data.value.length; i++) {
bpm = data.value[i].BPM;
time = data.value[i].Time;
BPM.push({
x: moment(time),
y: bpm
});
// console.log(BPM);
time1.push(time);
}
console.log((new Date).getTime());
console.log(moment(time, "DD.MM.YYYY hh:mm:ss"));
console.log(BPM);
console.log(BPM[BPM.length - 1]);
// console.log(seriesData);
// set our data series and create new chart
chart1.data.series[0].data = BPM;
chart = new Highcharts.Chart(chart1.data);
$('#container').css({
height: '400px'
});
// console.log(sortedBPM);
// console.log(time1);
}
});
// give highcharts something to render to
var container = document.getElementById("container");
chart1.data = {
chart: {
renderTo: container,
type: 'spline',
animation: Highcharts.svg, // don't animate in old IE
marginRight: 10,
events: {
load: function () {
setInterval(function () {
// find last data points
var test = BPM[BPM.length - 1];
var x = (new Date).getTime(),
y = test.y;
console.log(x);
shift = chart.series[0].data.length < 30;
chart.series[0].addPoint([x, y], true, true);
},
30000);
}
}
},
title: {
text: 'Microsoft Band: Real Time Pulse Analysis'
},
xAxis: {
type: 'datetime',
tickPixelInterval: 150,
dateTimeLabelFormats: {
},
},
yAxis: {
min: chart1.yAxisMin,
max: chart1.yAxisMax,
title: {
text: 'Heart Rate'
},
plotLines: [{
value: 0,
width: 1,
color: '#808080'
}]
},
tooltip: {
formatter: function () {
return '<b>' + this.series.name + '</b><br/>' + Highcharts.dateFormat('%H:%M:%S', this.x) + '<br/>' + Highcharts.numberFormat(this.y, 2);
}
},
legend: {
enabled: false
},
exporting: {
enabled: false
},
series: [{
name: 'Beats Per Minute',
data: []
}]
};
});
});

Your test.y is the problem. It returns undefined after one interval. Somehow BPM is changing in it's structure - changing each object from {x,y} to [0,1] - therefore I used:
y = (test.y !== undefined)? test.y : test[1];
to either get the previous structure or the new. I also set the interval to 3 seconds for you to see the difference easier. Here's the DEMO.

Adding series dynamically in highcharts

(function($){
$(function () {
$(document).ready(function() {
Highcharts.setOptions({
global: {
useUTC: false
}
});
var i=0;
var chart = new Highcharts.Chart({
chart: {
type: 'spline',
renderTo: 'container',
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 Name = new Array();
Name[0] = "Random data";
Name[1] = "Volvo";
var length=chart.series.length;
var flag=0;
var index=0;
var x = (new Date()).getTime(), // current time
y = Math.random();
for (var k=0;k<Name.length;k++) {
for(var j=0;j<chart.series.length;j++) {
if(chart.series[j].name==Name[k]) {
flag=1;
index=j;
x = (new Date()).getTime();
y = Math.random();
break;
}
}
if(flag==1) {
chart.series[index].addPoint([x, y], true, true);
flag=0;
} else {
chart.addSeries({name: '' + Name[k] + '', data: [] });
chart.series[length].addPoint([x, y+1], true);
length=length+1;
}
}
}, 1000);
}
}
},
title: {
text: 'Live random data'
},
xAxis: {
type: 'datetime',
tickPixelInterval: 150
},
yAxis: {
title: {
text: 'Value'
},
plotLines: [{
value: 0,
width: 1,
color: '#808080'
}]
},
tooltip: {
formatter: function() {
return '<b>'+ this.series.name +'</b><br/>'+
Highcharts.dateFormat('%Y-%m-%d %H:%M:%S', this.x) +'<br/>'+
Highcharts.numberFormat(this.y, 2);
}
},
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++) {
data.push({
x: time + i * 1000,
y: Math.random()
});
}
return data;
})()
}]
});
});
});
})(jQuery);
I am able to add series and add point in charts but the series that I add after initialization, which is "volvo", is not drawing lines between its points. What might be the problem?
And is there any other way of comparing arrays and adding points without a for-loop? Because I can get millions of series at times and I don't want to be looping over arrays to check if it exists or not. So is there any efficient way of finding wheteher a list already exists, and if it does what is its index?
here is its fiddle: www.jsfiddle.net/2jYLz/

It is related with fact that you have enabled shifting in addPoint() when you add new serie. In other words, shifting remove first point and add new in the end of serie. So when you have one point it caused your scenario. So you need to disable shipfing, and when lenght of series.data achieve i.e 10 points, shifting should be enabled.

Creating multiple series in a highcharts spline chart?

I made a spline chart using Highcharts library containing two series of data loaded from two different CSV files and it works fine. Now I need another spline chart, but with 54 data series.
I used PHP to create the 54 CSV files, then my Javascript code generating the chart is:
<script type="text/javascript">
$(function () {
var chart;
$(document).ready(function() {
var options = {
chart: {
renderTo: 'chart_day',
type: 'spline'
},
title: {
text: 'Andamento giornaliero temperatura.'
},
xAxis: {
type: 'datetime',
second: '%H:%M:%S'
},
yAxis: {
title: {
text: 'Temperatura (°C)'
},
},
tooltip: {
formatter: function() {
return '<b>'+ this.series.name +'</b><br/>'+
Highcharts.dateFormat('%H:%M:%S', this.x) +': '+ this.y +' °C';
}
},
series: [ <?php for($i=0;$i<52;$i++)
echo "{ name: \"Sensor".($i+1)."\", data: []},";
echo "{ name: \"Sensor".($i+1)."\", data: []}";
?>]
};
for( i=1; i<=54; i++){
if(i!=5){
$.get('file/file'+i+'.txt', function(data) {
// Split the lines
var lines = data.split('\n');
// Iterate over the lines and add categories or series
$.each(lines, function(lineNo,line) {
if (line != "") {
var items = line.split(',');
var timeElements = items[0].split(':');
var date = Date.UTC(2004, 2, 1, timeElements[0], timeElements[1], timeElements[2], 0);
options.series[i-1].data.push([date,parseFloat(items[1])]);
}
});
if(i==54)
chart = new Highcharts.Chart(options);
});
}
}
});
});
</script>
There is an error in the JS consolle:
"Uncaught TypeError: Cannot read property 'data' of undefined "

Seems like your series initialization is broken. Try this
var series = [];
for(i=0;i<52;i++)
{
series.push({name: ('Sensor' + (i + 1)), data: []});
}
and set this series object at your options:
var options = {
..
series: series
};