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Highcharts - How do I track/follow a live updated chart without using a navigator?

I have a graph which has live data feeding in, but the chart only tracks or follows the data line if the navigator is enabled.
I am unsure if this is a feature or is it a bug.
On the JSFiddle, notice how it doesn't track, but as soon as you change enabled: false to enabled: true, on line 43, it instantly starts tracking.
http://jsfiddle.net/6eso1hgy/1/
Is it possible to make it have the tracking behavior without a navigator?

I don't know if you really need Highstock. If not then you can change the code to just Highcharts and then remove all unnecessary code and add the following:
series: [{
marker: {
radius: 0
},
...
Fiddle

You can achieve it using xAxis.setExtremes() method:
Code:
events: {
load: function() {
// set up the updating of the chart each second
var series = this.series[0];
var chart = this;
setInterval(function() {
NewTime = (new Date()).getTime(); // current time
var x = NewTime,
y = Math.round(Math.random() * 10);
series.addPoint([x, y], false, false, false); //redraw shift animation
chart.xAxis[0].setExtremes(
chart.xAxis[0].min + 1000,
chart.xAxis[0].max + 1000,
true,
false
);
}, 1000);
}
}
Demo:
http://jsfiddle.net/BlackLabel/z1mu0Lgh/
API reference:
https://api.highcharts.com/class-reference/Highcharts.Axis#setExtremes

How to display Tooltip without hovering pie chart with Chart.JS

I'm using AdminLTE and chart.js for pie charts. The question is, can i make the text visible for each arc in the pie chart without hovering mouse?
I don't use legends because some chart have a lot of labels in it.
If you have any other ways to show the all text labels i would appreciate it.
This is my current script for all my pie charts
<script>
$(function () {
//-------------
//- PIE CHART -
//-------------
// Get context with jQuery - using jQuery's .get() method.
var pieChartCanvas = $('#pieChart').get(0).getContext('2d')
var pieChart = new Chart(pieChartCanvas)
var PieData = [<?php echo $isiData; ?>]
var pieOptions = {
//Boolean - Whether we should show a stroke on each segment
segmentShowStroke : true,
//String - The colour of each segment stroke
segmentStrokeColor : '#fff',
//Number - The width of each segment stroke
segmentStrokeWidth : 2,
//Number - The percentage of the chart that we cut out of the middle
percentageInnerCutout: 0, // This is 0 for Pie charts
//Number - Amount of animation steps
animationSteps : 150,
//String - Animation easing effect
animationEasing : 'easeOutBack',
//Boolean - Whether we animate the rotation of the Doughnut
animateRotate : true,
//Boolean - Whether we animate scaling the Doughnut from the centre
animateScale : false,
//Boolean - whether to make the chart responsive to window resizing
responsive : true,
// Boolean - whether to maintain the starting aspect ratio or not when responsive, if set to false, will take up entire container
maintainAspectRatio : true,
//String - A legend template
legendTemplate : '<ul class="<%=name.toLowerCase()%>-legend"><% for (var i=0; i<segments.length; i++){%><li><span style="background-color:<%=segments[i].fillColor%>"></span><%if(segments[i].label){%><%=segments[i].label%><%}%></li><%}%></ul>'
}
//Create pie or douhnut chart
// You can switch between pie and douhnut using the method below.
pieChart.Doughnut(PieData, pieOptions)
})
</script>
<canvas id="pieChart" style="height:400px;"></canvas>

I've had a great time on google with this problem..
Basically the way other developers solve your problem was creating a plugin which makes all the tooltips show up after the render
I found a fiddle that fixes this problem..
The fiddle is not mine..
Credits goes to Suhaib Janjua
// Show tooltips always even the stats are zero
Chart.pluginService.register({
beforeRender: function(chart) {
if (chart.config.options.showAllTooltips) {
// create an array of tooltips
// we can't use the chart tooltip because there is only one tooltip per chart
chart.pluginTooltips = [];
chart.config.data.datasets.forEach(function(dataset, i) {
chart.getDatasetMeta(i).data.forEach(function(sector, j) {
chart.pluginTooltips.push(new Chart.Tooltip({
_chart: chart.chart,
_chartInstance: chart,
_data: chart.data,
_options: chart.options.tooltips,
_active: [sector]
}, chart));
});
});
// turn off normal tooltips
chart.options.tooltips.enabled = false;
}
},
afterDraw: function(chart, easing) {
if (chart.config.options.showAllTooltips) {
// we don't want the permanent tooltips to animate, so don't do anything till the animation runs atleast once
if (!chart.allTooltipsOnce) {
if (easing !== 1)
return;
chart.allTooltipsOnce = true;
}
// turn on tooltips
chart.options.tooltips.enabled = true;
Chart.helpers.each(chart.pluginTooltips, function(tooltip) {
tooltip.initialize();
tooltip.update();
// we don't actually need this since we are not animating tooltips
tooltip.pivot();
tooltip.transition(easing).draw();
});
chart.options.tooltips.enabled = false;
}
}
});
// Show tooltips always even the stats are zero
var canvas = $('#myCanvas2').get(0).getContext('2d');
var doughnutChart = new Chart(canvas, {
type: 'doughnut',
data: {
labels: [
"Success",
"Failure"
],
datasets: [{
data: [45, 9],
backgroundColor: [
"#1ABC9C",
"#566573"
],
hoverBackgroundColor: [
"#148F77",
"#273746"
]
}]
},
options: {
// In options, just use the following line to show all the tooltips
showAllTooltips: true
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.3.0/Chart.bundle.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div>
<canvas id="myCanvas2" width="350" height="296"></canvas>
</div>

I use onclick event and bootstrap modal for this issue and disabled Tooltip.
,onClick: function(c,i) {
e = i[0];
var x_value = this.data.labels[e._index];
var ID = x_value;
var Type =1;
$.ajax({
url: 'getsearchresults.asmx/ChartDetayGetir',
data: "{ 'ID': '" + ID + "',type:'"+Type+"'}",
dataType: "json",
type: "POST",
contentType: "application/json; charset=utf-8",
success: function (data) {
document.getElementById("modalheader").innerHTML = x_value;
document.getElementById("modalbody").innerHTML = data.d;
$('#myModal').modal();
},
error: function (response) {
alert(response.responseText);
},
failure: function (response) {
alert('Failure');
}
});
}

Chart.js - doughnut show active segment tooltip (on click of external button)

// ignore this comment - required to post the following jsfiddle.net link!
Please see https://jsfiddle.net/68bf25vh/
If you click a doughnut segment, the corresponding tooltip displays, which is the correct functionality.
The problem is triggering this desired functionality when a user clicks one of the buttons below the doughnut. E.g. when a user clicks the 'Trigger Segment 1 Click' button. The tooltip should display above segment 1 (just as if the user had clicked segment 1).
A bonus would be having the tooltip displaying above segment 1 initially too, but not essential.
Any help much appreciated :)
Please note
Using Chart.js v 2.5.0. I've read a few articles suggesting to use a showTooltip() method, e.g. chart.showTooltip([chart.segments[0]], true); Unfortunately this method does not exist in this version.
Found this https://stackoverflow.com/a/37989832, but this displays all tooltips. Just want the tooltip of the active (current) segment to display.

You can use the following function to display corresponding tooltip, when clicked on an external button :
function showTooltip(chart, index) {
var segment = chart.getDatasetMeta(0).data[index];
chart.tooltip._active = [segment];
chart.tooltip.update();
chart.draw();
}
When calling the function, pass chart-instance and button-index as the first and second argument respectively.
BONUS :
To initially show the tooltip of segment-1, add the following config in your chart options :
animation: {
onComplete: function() {
if (!isChartRendered) {
showTooltip(myChart, 0);
isChartRendered = true;
}
}
}
* declare a variable named isChartRendered in global-scope and set it to false
ᴡᴏʀᴋɪɴɢ ᴇxᴀᴍᴘʟᴇ ⧩
var isChartRendered = false;
var ctx = document.getElementById('myChart').getContext('2d');
var myChart = new Chart(ctx, {
type: 'doughnut',
data: {
labels: ['Segment 1', 'Segment 2', 'Segment 3'],
datasets: [{
data: [10, 10, 10]
}]
},
options: {
events: ['click'],
cutoutPercentage: 70,
legend: {
display: false
},
tooltips: {
displayColors: false
},
onClick: function(evt, elements) {},
// BONUS: show segment 1 tooltip initially
animation: {
onComplete: function() {
if (!isChartRendered) {
showTooltip(myChart, 0);
isChartRendered = true;
}
}
}
}
});
$(document).on('click', 'button', function() {
var $this = $(this),
index = $this.index();
showTooltip(myChart, index);
});
function showTooltip(chart, index) {
var segment = chart.getDatasetMeta(0).data[index];
chart.tooltip._active = [segment];
chart.tooltip.update();
chart.draw();
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.6.0/Chart.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div style="width:400px;height:400px;">
<canvas id="myChart"></canvas>
</div>
<div style="margin-top:50px;">
<button>Trigger Segment 1 Click</button>
<button>Trigger Segment 2 Click</button>
<button>Trigger Segment 3 Click</button>
</div>

For Chart.js 3 the GRUNT`s solution needs some modifications:
chart.tooltip.setActiveElements([{datasetIndex: 0, index: index}]);
chart.tooltip.update();
chart.render();
If you want to change also the segment style:
const activeSegment = chart.getDatasetMeta(0).data[index];
chart.updateHoverStyle([{element: activeSegment, datasetIndex: 0}], null, true);

Bar chart looks bad before change data

Hi here I set the data to the bar chart:
setDatosBarra: function(data){ //
var self = this;
var horaEstim = 0;
var horaReal = 0;
var horaTotal = 0;
if(data[0].horas_estim != '-'){
horaEstim = data[0].horas_estim;
}
if(data[0].horas_real != '-'){
horaReal = data[0].horas_real;
}
if(data[0].total_horas != '-'){
horaTotal = data[0].total_horas;
}
var datosBarra =[{data: [[0,horaEstim]], color: "#691717"}, {data: [[1,horaReal]], color: "#173D69"},{data: [[2,horaTotal]], color: "#176469"}];
self.flotLinea(datosBarra);
},
When all is ready I send the data to self.flotBar;
This is the flotBar function:
flotBar: function(datos){
var self = this;
if(datos == 0){
var data = [["SIN REGISTROS",0]];
}else{
var data = datos;
}
function getTooltip(label, x, y) {
return "<strong style='font-size:18px;'> " + y + " </strong> horas";
}
var plot = $.plot("#placeholder",data, {
series: {
bars: {
show: true,
barWidth: 0.3,
align: "center",
lineWidth: 0,
fill:.75
}
},
xaxis: {
ticks: [[0,"Horas estimadas"],[1,"Horas reales"],[2,"Total horas"]],
mode: "categories",
tickLength: 0
},
grid: {
hoverable: true,
clickable: true
},
tooltip: true,
tooltipOpts : {
content : getTooltip,
defaultTheme : false
},
});
},
Ok , and this is my problem, example:
I select a option in an dropDown:
And the bar chart looks like this:
If I select other option in the dropDown:
The bar chart looks like this:
And if I select again the first option "Correcion de errores", the bar chart looks like this:
So.. always the first time that I show the bar chart looks like in the first image , with the numbers in the line, but If I select other option looks good.
I need see good the bar chart always and no just when I select other option.
I'm using flot javascript library.
How can I fix this? sorry by my english

The main issue with the question as stated is that we do not have all the code. In essence, you should either provide all the code, or shrink down the problem to something that shows the issue and then, well, provide all the code. As far as I can guess, you have some other code somewhere else that is drawing the initial chart. The second and subsequent times? Drawn properly. To support my assertion, notice that in your initial image the captions for the x-axis tick markers (ditto the bars themselves) are right aligned not centered.
For fun, I wrote a quick jsFiddle that showed how to switch datasets using a button (much as you want to do with the drop-down) and redraw the chart:
drawChart = function(index) {
var chartData = getDataForChart(rawData[index]);
if (chart) {
chart.setData(chartData);
chart.draw();
}
else {
chart = $.plot("#barchart", chartData, chartOptions);
}
},
switchDataset = function() {
datasetIndex = (datasetIndex + 1) % datasetCount;
drawChart(datasetIndex);
};
$("#switchButton").on("click", switchDataset);
Because I decided to load new data into the chart rather than redraw it all from scratch (to be honest I saw no real difference either way), it meant that I had to pre-calculate the maximum value for the y-axis:
calcValueMax = function() {
var max = 0;
rawData.forEach(function(values) {
values.forEach(function(value) {
if (value > max) {
max = value;
}
});
});
return max;
},
// other code
chartOptions.yaxis.max = calcValueMax();
Hope that helps.

How to color Google Column Chart's every bar differently and keep them as it is

Though I have successfully colored the bars of google chart individually but not able to keep them when we hover mouse over it. It is getting reset back to blue(which is default).
Here is the jsfiddle of what I have done jsfiddle.
I tried to control the hover behaviour with multiple ways like below.
This I am keeping outside (document.ready) but inside script tag.
1)
$('#chart_div').hover(
function() {
$('#chart_client').hide(); // chart_client is another google chart div.
}, function() { // just for testing I was doing hide/show of that.
$('#chart_client').show();
}
);
2)
$("#chart_div").on({
mouseenter: function () {
$('#chart_client').hide();
},
mouseleave:function () {
$('#chart_client').show();
}
},'rect');
3)
google.visualization.events.addListener('#chart_div', 'ready', function () {
$('#chart_div rect').mouseover(function (e) {
alert('hello');
});
});
I must be doing something wrong, could you please tell me what and where.

I solved it using below code. Earlier I was trying to create charts using dynamically adding rows into chart(please visit my jsfiddle) but with this below approach I am first preparing data(converting dynamic to static) and adding that static data in to chart's 'arrayToDataTable' method.
google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawUserKeywordChart);
function drawUserKeywordChart() {
var val = 'Tax:47;Finance:95;Awards:126;Bank:137;Debt:145;';
var length = val.length;
var array = [];
//preparing data
while(length>0){
var sepAt = val.indexOf(";");
var value = parseInt(val.substring(val.indexOf(":")+1, sepAt));
array.push(val.substring(0, val.indexOf(":")));
array.push(value);
val = val.substring(val.indexOf(";")+1, length);
length = val.length;
}
var data = google.visualization.arrayToDataTable([
['Keyword', 'Occurences', { role: 'style' }],
[array[0], array[1], '#8AA3B3'],
[array[2], array[3], '#A9B089'],
[array[4], array[5], '#848C49'],
[array[6], array[7], '#44464A'],
[array[8], array[9], '#704610'],
]);
var options = {
title: 'Keyword Matches',
width: 660,
height: 450,
titleTextStyle:{bold:true,fontSize:20},
legend:{position:'none'}
};
var chart = new google.visualization.ColumnChart(document.getElementById('chart_keyword1'));
chart.draw(data, options);
}
Please advice if you find anything wrong here or you have better approach than this.