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how to set labeloffset dynamically in chart Js

I am using Chart.js, I have to generate stack bar chart based on fromMonth to toMonth selection.
My bar chart option is:
{
"chartCanvasHeight": "200",
"chartOptions": {
"responsive": "true",
"tooltips": {
"mode": "nearest",
"callbacks": {
"label": null,
"title": {}
}
},
"legend": {
"position": "bottom",
"labels": {
"generateLabels": {}
}
},
"scales": {
"yAxes": [{
"ticks": {
"beginAtZero": "true",
"callback": {}
},
"scaleLabel": {
"display": true,
"labelString": ""
}
}],
"xAxes": [{
"id": "xAxis1",
"type": "category",
"ticks": {
"display": false
}
},
{
"id": "xAxis2",
"type": "linear",
"offset": true,
"ticks": {
"max": 12,
"beginAtZero": true,
"stepSize": 0.5,
"callback": {}
},
"gridLines": {
"offsetGridLines": true,
"color": "white",
"zeroLineColor": "white"
}
},
{
"id": "xAxis3",
"type": "linear",
"ticks": {
"beginAtZero": false,
"max": 12,
"stepSize": 1,
"callback": {}
},
"gridLines": {}
},
{
"id": "xAxis4",
"ticks": {
"display": false
},
"scaleLabel": {
"display": true,
"labelString": ""
},
"gridLines": {
"zeroLineColor": "white",
"color": "white",
"drawOnChartArea": false
}
}
]
},
"plugins": {
"datalabels": {
"align": "top",
"anchor": "end",
"textAlign": "center"
},
"afterDatasetsDraw": {}
}
},
"chartDataSets": [],
"chartLabels": [],
"chartType": "bar"
}
everything is coming but labels are not center aligned as months could be between Jan to Dec. how to center align both x-axis label or labeloffset dynamically.
drawOnChartArea is also not working.
Last stork is also not coming on months x-axis.

Add and remove data simultaneously to ChartJS chart

For visualisation purposes I'm trying to add data to a chart and simultaneously remove the first data point from the chart every 500ms.
It works when I do either of .addData() or removeData() on their own, but when I try and combine them into one function to run at the same time, neither of them works.
Is there a way I can create this function to simultaneously add and remove data, or at a minimum remove the first data point shortly after I've added the new last data point?
Here's the data and setup:
var ctx = document.getElementById('myChart').getContext('2d');
ctx.height = 220;
var data = {
"labels": [
"0",
"1",
"2",
"3",
"4"
],
"datasets": [
{
"label": "2014",
"backgroundColor": "#0055FA",
"fill": true,
"data": [
"50",
"40",
"55",
"35",
"45",
"50",
"15",
"100"
],
"borderColor": "transparent",
"borderWidth": "0",
"pointBackgroundColor":"#ffffff"
}
]
};
var options = {
"title": {
"display": false,
"text": "Ad Revenue Comparison 2014-2015",
"position": "bottom",
"fullWidth": true,
"fontColor": "#aa7942",
"fontSize": 16
},
"legend": {
"display": false,
"fullWidth": true,
"position": "top"
},
"scales": {
"yAxes": [
{
"ticks": {
"beginAtZero": true,
"display": true
},
"gridLines": {
"display": false
},
"scaleLabel": {
"display": false,
"labelString": "USD in Millions"
},
"display": false
}
],
"xAxes": {
"0": {
"ticks": {
"display": false
},
"display": false,
"gridLines": {
"display": false
},
"scaleLabel": {
"display": false
}
}
}
},
"tooltips": {
"enabled": false
},
"elements": {
"arc": {
"backgroundColor": "#009BD0"
},
"line": {
"backgroundColor": "#009BD0",
"fill": true,
"borderColor": "#e2fdff"
},
"point": {
"radius": 3,
"pointStyle": "circle",
"backgroundColor": "#ffffff"
}
}
};
Here are the functions:
var myChart = new Chart(ctx, {
type: 'line',
data: data,
options: options
});
function removeData(chart) {
chart.data.labels.pop();
chart.data.datasets.forEach((dataset) => {
dataset.data.pop();
});
chart.update();
}
function addData(chart, label, data) {
chart.data.labels.push(label);
chart.data.datasets.forEach((dataset) => {
dataset.data.push(data);
});
chart.update();
}
setInterval(function(){
addData(myChart,"4",Math.floor(Math.random() * 60));
removeData(myChart);
}, 500);
//setInterval(function(){ removeData(myChart); }, 500);
</script>

Title in top column charts

I have a problem with using headings on the top of the columns using the bar chart.
In some moments shows the title, and other moment does not show ...
Here my Print!
chart = new Highcharts.Chart({
"chart": {
"renderTo": "container_adwords",
"type": "column",
"animation": false
},
"title": {
"text": "Formul\u00e1rio | Chatbot | Whatsapp)"
},
"colors": ["#1d6c3f", "#003f23", "#68a9dc", "#007b5a", "#e4452b", "#ba0d00", "#004b76", "#b6740c", "#1b964e", "#f79969", "#fdc076", "#24a1ae", "#e46a2b", "#ff7754", "#83ccb0", "#6ecbd6", "#ec9631", "#65c07f", "#147bb6", "#005a64"],
"series": [{
"name": "2018",
"data": [575, 360.818182, 194.285714, 410.1, 212, 161.92, 344.846154, 203.639, 824.268, 130.406333, 323.399231, 657.198889]
}, {
"name": "2019",
"data": [1236.88, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
}],
"xAxis": {
"categories": ["Jan", "Fev", "Mar", "Abr", "Mai", "Jun", "Jul", "Ago", "Set", "Out", "Nov", "Dez"],
"labels": {
"style": {
"fontSize": "15px"
}
}
},
"yAxis": {
"min": 0,
"title": {
"text": "Quantidade"
}
},
"legend": {
"align": "center",
"verticalAlign": "bottom"
},
"tooltip": {
"formatter": function() {
return '' + this.x + ': R$ ' + this.y.toFixed(2).replace('.', ',').replace(/(\d)(?=(\d{3})+\,)/g, "$1.");
}
},
"plotOptions": {
"column": {
"dataLabels": {
"enabled": true,
"crop": true,
"overflow": "none",
"style": {
"fontSize": "14px"
},
"formatter": function() {
return 'R$ ' + this.y.toFixed(2).replace('.', ',').replace(/(\d)(?=(\d{3})+\,)/g, "$1.");
}
}
}
}
});
I looked in the Highcharts documentation, but I could not identify anything that could help me on this subject.

Change dataLabels.overflow to "justify".
"plotOptions": {
"column": {
"dataLabels": {
"color": "black",
"enabled": true,
"crop": false,
"overflow": "justify",
"style": {
"fontSize": "14px"
},
"formatter": function() {
return 'R$ ' + this.y.toFixed(2).replace('.', ',').replace(/(\d)(?=(\d{3})+\,)/g, "$1.");
}
}
}
}
https://jsfiddle.net/vdLtw9as/
(I also changed the color, because I don't like it when is does the contrast thing)

How to overcome overlapping series lines in highcharts spline

I have a trend chart implemented using highcharts, the data is loaded via json dynamically. The chart renders properly with the data but however the series lines, data labels and symbols overlap each other at given data points. How do I overcome this?
Find the link to Fiddle - https://jsfiddle.net/ashanwijenayake/ft0ke201/
Screenshot
function renderTrendChart(){
$("#trendChartContainer").highcharts({
title: {
text: 'Indicator Vs Action Trend Chart',
x: -20
},
xAxis: {
categories: trendChartCategoies
},
yAxis: {
minRange: 1,
allowDecimals: false,
min: 0,
title: {
text: 'Cases Identified'
},
plotLines: [{
value: 0,
width: 1,
color: '#808080'
}]
},
plotOptions: {
series: {
pointPadding: 10,
groupPadding: 10,
cursor: 'pointer',
}
},
series: [{"name": "Pneumothorax", "data": [ { "y": 1, "marker": { "symbol": "text:" }, "dataLabels": { "x": -10, "y": -2, "enabled": true, "format": "2", "style": { "fontWeight": "bold", "fontSize": "12px" } } },{ "y": 2, "marker": { "symbol": "text:" }, "dataLabels": { "x": -10, "y": -2, "enabled": true, "format": "2", "style": { "fontWeight": "bold", "fontSize": "12px" } } } ], "id": "Pneumothorax" },{"name": "Respiratory", "data": [ 0,{ "y": 1, "marker": { "symbol": "text:" }, "dataLabels": { "x": -10, "y": -2, "enabled": true, "format": "1", "style": { "fontWeight": "bold", "fontSize": "12px" } } } ], "id": "Respiratory" },{"name": "Exsanguination", "data": [ 0,{ "y": 2, "marker": { "symbol": "text:" }, "dataLabels": { "x": -10, "y": -2, "enabled": true, "format": "3", "style": { "fontWeight": "bold", "fontSize": "12px" } } } ], "id": "Exsanguination" }]
});
}

How to display no data found in highcharts

In highcharts, if there is no data found in the json value, I want to display an error message.
I used this code:
if(options.series[0].data.length == 0) {
alert('nodatafound');
} else {
var chart = new Highcharts.Chart(options);
}
This error appears:
TypeError: options.series[0].data is undefined
Data from JSON:
{
"chart": {
"renderTo": "container2",
"type": "column",
"marginRight": 10,
"marginBottom‌": 125
},
"title": {
"text": "",
"x": -20
},
"exporting": {
"enabled": false
},
"credits": {
"enab‌led": false
},
"subtitle": {
"text": "",
"x": -20
},
"xAxis": {
"labels": {
"rotation": -90,
"sty‌le": {
"fontSize": "10px"
}
}
},
"yAxis": {
"title": {
"text": ""
},
"plotLines": [{
"width": 1,
"c‌olor": "#808080"
}]
},
"tooltip": {
"shared": true
},
"legend": {
"align": "right",
"verticalA‌lign": "top",
"x": 0,
"y": 20,
"borderWidth": 0
},
"plotOptions": {
"column": {
"stacking": "no‌rmal",
"dataLabels": {
"enabled": false,
"color": "white"
}
}
},
"series": [{
"name": "2015-16-Q1"
}, {
"name": "2015-16-Q2"
}, {
"name": "2015-16-Q3"
}, {
"na‌me": "2015-16-Q4"
}]
}

You can use no-data module which allows do that.
Ref: http://code.highcharts.com/modules/no-data-to-display.js
Example: http://jsfiddle.net/6o8o03fe/1/