Develop Reference

How to start column of waterfall chart from zero

I have a waterfall chart working, but I need that penultimate column start at zero.
I think I need to create a dummy point that hide and set Axis.min on the second point y position, but I can't put this working.
chart: {
type: 'waterfall'
},
title: {
text: ''
},
exporting: {
enabled: false
},
credits: {
enabled: false
},
//colors: ['#DADBDF', '#ED4D5F','#ED4D5F','#ED4D5F','#ED4D5F','#ED4D5F','#D7EAFD','#D7EAFD','#D7EAFD' ],
xAxis: {
lineColor: '#FFFFFF',
lineWidth: 0,
gridLineColor: '#DADBDF',
categories: [],
},
yAxis: {
lineColor: '#FFFFFF',
lineWidth: 0,
gridLineColor: '#DADBDF',
plotBands: [{
color: '#000000',
from: 0,
to: 0
}],
title: {
text: ''
},
},
legend: {
enabled: false
},
plotOptions: {
column: {
dataLabels: {
enabled: true,
color: '#000000'
},
colorByPoint: true,
pointWidth: 150
},
series: {
borderWidth: 0,
dataLabels: {
enabled: true,
format: '{point.y}'
},
turboThreshold: 0,
label: {
enabled: false
}
}
},
series: [{
data: [],
showInLegend: false,
}],

You can add another waterfall series with defined x values:
Highcharts.chart('container', {
chart: {
type: 'waterfall'
},
...,
plotOptions: {
series: {
grouping: false
}
},
series: [{
data: [...]
}, {
data: [{
y: 569000,
x: 5
}, {
y: 1569000,
x: 6
}]
}]
});
Live example: https://jsfiddle.net/BlackLabel/qc07y5kf/
API Reference: https://api.highcharts.com/highcharts/series.waterfall.data

Hightchart issue, when more then one plot is used on page

I am working on page, where i need to have multiple plots, one being a solid gauge and the other being a line graph.
I am using the Ionic Framework 5 with angular and High Charts.
I am finding that when one plot is displayed, it works fine, but with more then one I am getting some type of conflict where the line chart does not get updated and the gauge gets data which is meant for the line graph.
This my code. Do i need to do anything in perticular?
particulate_plot() {
let particulte_chart = this.particulte_chart.stockChart('particulate_plot', {
chart: {
type: 'line',
animation: true,
backgroundColor: "#464340",
},
credits: {
enabled: false
},
legend: {
enabled: true,
layout: 'horizontal',
verticalAlign: 'bottom',
floating: false,
},
rangeSelector: {
selected: 1,
inputEnabled: false,
enabled: false
},
title: {
text: "Particulate Mass Concentration",
style: {
"color": "#f4f5f8",
"fontSize": "12px"
}
},
xAxis: {
type: 'datetime',
dateTimeLabelFormats: {
day: '%e of %b',
},
title: {
text: 'Date',
style: {
"color": "#f4f5f8",
"fontSize": "12px"
}
},
labels: {
style: {
"color": "#f4f5f8",
"fontSize": "12px"
}
}
},
yAxis: {
min: 0,
opposite: false,
title: {
text: "Mass \xb5g/m\xb3",
style: {
"color": "#f4f5f8",
"fontSize": "12px"
}
},
labels: {
formatter: function() {
return (this.value.toFixed(2) ? '' : '') + this.value.toFixed(2);
},
style: {
"color": "#f4f5f8",
"fontSize": "12px"
}
},
plotLines: [{
label: {
text: "EU Limit 40 \xb5g/m\xb3",
style: {
"color": "#f4f5f8",
"fontSize": "12px"
},
align: 'center',
y: -10,
},
color: 'red', // Color value
value: 3, // Value of where the line will appear
width: 5 // Width of the line
}],
},
navigator: {
enabled: false
},
scrollbar: {
enabled: false
},
series: [{
boostThreshold: 0,
color: '#FFF59D',
name: "PM1.0",
type: 'spline',
data: this.datasets[0].data,
showInNavigator: true,
visible: false,
lineWidth: 1,
},
{
boostThreshold: 0,
color: '#FFAB40',
name: "PM2.5",
type: 'spline',
data: this.datasets_b[0].data,
showInNavigator: true,
visible: true,
lineWidth: 1,
},
{
boostThreshold: 0,
color: '#90CAF9',
name: "PM4",
type: 'spline',
data: this.datasets_c[0].data,
showInNavigator: true,
visible: false,
lineWidth: 1,
},
{
boostThreshold: 0,
color: '#4DD0E1',
name: "PM10",
type: 'spline',
data: this.datasets_d[0].data,
showInNavigator: true,
visible: false,
lineWidth: 1,
}
],
"tooltip": {
"pointFormat": "<b>{point.y:.2f}</b>",
"shared": true
},
});
}
}
air_main_gauge() {
let maingauge_chart = this.maingauge_chart.stockChart('MainGuageA', {
chart: {
type: 'solidgauge',
backgroundColor: 'white',
},
credits: {
enabled: false
},
pane: {
center: ['50%', '50%'],
size: '100%',
innerSize: '10%',
startAngle: -150,
endAngle: 150,
background: {
backgroundColor: HighCharts.defaultOptions.legend.backgroundColor || '#EEE',
innerRadius: '85%',
outerRadius: '100%',
shape: 'arc'
}
},
lineWidth: 1,
tooltip: {
enabled: false
},
navigator: {
enabled: false
},
rangeSelector: {
selected: 1,
inputEnabled: false,
enabled: false
},
scrollbar: {
enabled: false
},
// the value axis
yAxis: {
min: 0,
max: 100,
// title: {
// text: 'Speed'
// },
stops: [
[0.1, '#55BF3B'], // green
[0.5, '#DDDF0D'], // yellow
[0.8, '#ed1f1f'] // red
],
minorTickInterval: null,
tickPixelInterval: 400,
tickWidth: 0,
gridLineWidth: 10,
gridLineColor: 'transparent',
labels: {
enabled: false
},
title: {
enabled: false
}
},
series: [{
// name: 'Speed',
data: [20],
dataLabels: {
format: '<div style="text-align:center">' +
'<span style="font-size:25px">{y}</span><br/>' +
'<span style="font-size:12px;opacity:0.4">km/h</span>' +
'</div>',
position: 'right',
},
tooltip: {
// valueSuffix: ' km/h'
enabled: false
}
}],
plotOptions: {
solidgauge: {
innerRadius: '85%',
dataLabels: {
y: -45,
borderWidth: 0,
useHTML: true
}
},
},
});
}
</ion-row><ion-row class="ion-align-self-start"><!-- <script src="https://code.highcharts.com/highcharts.js"></script>--><script src="https://code.highcharts.com/stock/highstock.js"></script><script src="https://code.highcharts.com/highcharts-more.js"></script><script src="https://code.highcharts.com/modules/solid-gauge.js"></script><script src="https://code.highcharts.com/modules/exporting.js"></script><script src="https://code.highcharts.com/modules/export-data.js"></script><script src="https://code.highcharts.com/modules/accessibility.js"></script><div id="particulate_plot" style="width:100%; height:100%;"></div><div id="MainGuageA" style="width: 100%;" class="posi"></div><!-- <ion-item class="leafpostion" lines="none"></ion-item>--><!-- <ion-icon name="leaf" class="leaf"></ion-icon>--></ion-row>

Highcharts area chart curves to sharp

I just started using highcharts and I would like for my chart to display as something like the first image below, instead of the second image.
What I'd Like
What I have
Here is the code for what I have currently:
chart = new Highcharts.stockChart($('#' + tab + ' .chart')[0], {
chart: {
type: 'areaspline',
spacing: [10, 10, 15, 10],
events: {
load: function() {
setTimeout(function() {
interval = setInterval(function() {
requestData(asset, name)
}, 1000);
}, 1000);
}
},
},
rangeSelector: {
enabled: !1
},
navigator: {
enabled: false
},
title: {
text: name
},
xAxis: {
type: 'datetime',
tickPixelInterval: 100,
dateTimeLabelFormats: {
second: "%H:%M:%S",
minute: "%H:%M",
hour: "%H:%M",
day: "%d/%m",
week: "%Y<br/>%d-%m",
month: "%m-%Y",
year: "%Y"
}
//tickPixelInterval: 3600
},
yAxis: {
allowDecimals: true,
title: {
text: 'Values'
},
labels: {
style: {
backgroundColor: "#282828"
},
y: 12,
zIndex: 4,
formatter: function() {
return Highcharts.numberFormat(this.value, countDecimals(this.value))
}
},
opposite: false,
plotLines: [{
value: 0,
width: 1,
dashStyle: 'longdashdot',
color: '#2D2E2F'
}]
},
series: [{
name: 'Price',
dataGrouping: {
enabled: !1,
groupPixelWidth: 1
},
animation: !1,
threshold: null,
//color: '#2D2E2F',
data: []
}],
responsive: {
rules: [{
condition: {
maxWidth: 500
},
chartOptions: {
legend: {
align: 'center',
verticalAlign: 'bottom',
layout: 'horizontal'
},
yAxis: {
labels: {
align: 'left',
x: 0,
y: -5
},
title: {
text: null
}
},
subtitle: {
text: null
},
credits: {
enabled: false
}
}
}]
}
});
PS: The data from both charts are almost the same.
Thanks.

Highcharts how to make the y axis series value return only 2 decimal places

I want to make the format of my y axis series to only return 2 decimal places.
I have this code:
$('#main-graph').highcharts({
chart:{
zoomType:'xy',
type: 'spline'
},
title: {
text: '',
x: -20 //center
},
xAxis: {
categories: stat_date,
crosshair:true,
},
yAxis: [
{ //0
title: {
text: 'Impressions'
},
},
{//1
title:{
text: "Clicks"
}
},
{ //2
title:{
text: "CTR"
}
},
{ //3
title:{
text: "CPM"
}
},
{ //4
title:{
text: "CPC"
}
},
{ //5 - secondary axis which is the SPEND axis
title: {
text: "Spend",
style:{
// color: Highcharts.getOptions().colors[0]
color: "#8B8B8B"
}
},
opposite:true
}],
tooltip: {
shared: true,
valueDecimals: 2
// pointFormat: "{point.y:,.2f}"
},
legend: {
layout: 'horizontal',
align: 'top',
verticalAlign: 'top',
borderWidth: 0,
floating:true,
x: 0,
y: 0
},
series: [{
name: 'Spend',
data: spend,
yAxis: 5,
type:'column'
}, {
name: 'Impressions',
data: imp,
yAxis: 0,
}, {
name: 'Clicks',
data: clicks,
yAxis: 1
},
{
name: 'CTR',
data: ctr,
yAxis: 2
}, {
name: 'CPM',
data: cpm,
yAxis: 3
}, {
name: 'CPC',
data: cpc,
yAxis: 4
}
]
});
}
I tried adding this line of code:
dataLabels: {
enabled: true,
formatter: function () {
return Highcharts.numberFormat(this.y,2);
}
}
but it isn't working.
Any ideas? your help will be grealty apprecaited!
Thanks!

Slow loading data highstock

I have trouble with performance of my highstock. All works, but time of plotting of my data is too slow, about 30 seconds. JSON is about 30000 points. Maybe problem in how I draw this data ? I already turn off animation, shadow, marks etc.
And here is my JS code:
$(function() {
Highcharts.setOptions({
global: {
useUTC: false,
timezoneOffset: - 3 * 60
}
});
function requestData() {
$.ajax({
url: 'values.php',
success: function(series) {
chart.addSeries({name: 'Temp1', data: series[0], yAxis:0}, false);
chart.addSeries({name: 'Temp2', data: series[1], yAxis:0}, false);
chart.redraw();
},
cache: false
});
}
chart = new Highcharts.StockChart({
chart: {
animation: false,
zoomType: 'xy',
renderTo: 'container',
events: {
load: requestData
}
},
title: {
text: 'Temperatures from DS18B20',
x: -20
},
plotOptions: {
spline: {
turboThreshold: 50000
}
},
rangeSelector: {
allButtonsEnabled: true,
buttons: [{
type: 'minute',
count: 10,
text: '10min'
}, {
type: 'minute',
count: 30,
text: '30min'
}, {
type: 'all',
text: 'all'
}],
buttonTheme: {
width:60
},
selected: 2
},
xAxis: {
type: 'datetime',
categories: true,
ordinal: false,
// tickInterval: 100*3600,
minTickInterval:100000,
labels: {
align: 'center',
formatter:function(){
return Highcharts.dateFormat('%H:%M:%S',this.value);
}
}
},
yAxis: {
labels: {
format: '{value}°C',
style: {
color: Highcharts.getOptions().colors[0]
}
},
title: {
text: 'Temperature',
style: {
color: Highcharts.getOptions().colors[0]
}
},
opposite: false
},
legend: {
enabled: true,
align: 'right',
backgroundColor: '#DBFFDB',
borderColor: 'black',
borderWidth: 2,
layout: 'vertical',
verticalAlign: 'top',
y: 200,
shadow: true
},
tooltip: {
shared: true
},
series: []
});
});