Develop Reference

Echarts.js tooltip not showing with formatter function

Echarts.js on Angular 10 and these are my toltip options :
tooltip: {
show: true,
trigger: 'axis',
axisPointer: {
type: 'line',
lineStyle: {
color: eTheme.tooltipLineColor,
width: eTheme.tooltipLineWidth,
},
},
textStyle: {
color: eTheme.tooltipTextColor,
fontSize: 20,
fontWeight: eTheme.tooltipFontWeight,
},
position: 'top',
backgroundColor: eTheme.tooltipBg,
borderColor: eTheme.tooltipBorderColor,
borderWidth: 1,
extraCssText: eTheme.tooltipExtraCss,
formatter : (params) => {
return Math.round(parseInt(params[0].value, 10));
},
},
The problems is that with formatter my tooltip is not showing , when i delete formatter - everything is fine and tooltip is showing again.
What is wrong with formatter ?

How to change fontSize for dataLabels?

I do not see in docs any mention how to adjust fontSize of dataLabels.
dataLabels do not have any mention about font size:
dataLabels: {
offset: 0,
minAngleToShowLabel: 10
},
It's not possible?
new Vue({
el: "#app",
data() {
return {
series: [4, 7, 3, 45, 32, 53],
options: {
expandOnClick: true,
dataLabels: {
minAngleToShowLabel: 50,
// offsetY: 1200,
style: { fontSize: '18px' } // this do not work!
},
chart: {
width: 480,
type: 'pie',
},
legend: {
// offsetX: 510,
fontSize: '16px',
height: 500,
width: 400,
horizontalAlign: 'right',
},
title: {
text: 'Some name',
style: {
fontSize: '20px',
},
},
labels: ["aa", "bb", "cc", "dd", "ee", "ff"],
responsive: [{
breakpoint: 480,
options: {
chart: {
width: 480
},
legend: {
position: 'right',
offsetY: 40,
fontSize: '16px',
},
}
}]
},
}
},
methods: {
},
components: {
VueApexCharts
}
})
https://jsfiddle.net/ayx8ez9k/

You can find a pretty good summary of your options here on this page: https://apexcharts.com/docs/options/datalabels/
style: {
fontSize: '14px',
fontFamily: 'Helvetica, Arial, sans-serif',
fontWeight: 'bold',
colors: undefined
},

You can simply provide styling in CSS class.
.apexcharts-pie-label{
font-size:25px;
}

How to add scroll on highcharts multiple drilldown

Im using highcharts that now we have so much item, i need something to make it readable and scrollable, i have added zoom property but it doesnt meet requiriments, any idea?
this is my code :
Highcharts.theme = {
colors: ["#7cb5ec", "#f7a35c", "#90ee7e", "#7798BF", "#aaeeee", "#ff0066", "#eeaaee", "#55BF3B", "#DF5353", "#7798BF", "#aaeeee"],
chart: {
zoomType: 'x',
backgroundColor: null,
style: {
fontFamily: "Dosis, sans-serif"
}
},
title: {
style: {
fontSize: '16px',
fontWeight: 'bold',
textTransform: 'uppercase'
}
},
tooltip: {
borderWidth: 0,
backgroundColor: 'rgba(219,219,216,0.8)',
shadow: false
},
legend: {
itemStyle: {
fontWeight: 'bold',
fontSize: '13px'
}
},
xAxis: {
gridLineWidth: 1,
labels: {
style: {
fontSize: '12px'
}
}
},
yAxis: {
minorTickInterval: 'auto',
title: {
style: {
textTransform: 'uppercase'
}
},
labels: {
style: {
fontSize: '12px'
}
}
},
plotOptions: {
candlestick: {
lineColor: '#404048'
}
},
scrollbar: {
enabled: true
},
// General
background2: '#F0F0EA'
};
i have been added zoomType: 'x' for now, but i need to work with scrollable too. what property i should use? i already try highstock but it doesnt work with drilldown charts.

Use can use scrollablePlotArea property. Also, drilldown works with Highstock: http://jsfiddle.net/BlackLabel/9ap2sj7k/
chart: {
scrollablePlotArea: {
minWidth: 1200
}
}
Live demo: http://jsfiddle.net/BlackLabel/b0f2dq3g/
API: https://api.highcharts.com/highcharts/chart.scrollablePlotArea

Highcharts - chartanimation step by step

Is it possible to render charts and animate them step by step?
Right now I got three area-datasets in my chart which I need to animate step by step. Dataset/area 1 shall start and after this is finished, Dataset/area 2 need to start and then 3.
I cannot find an option for that, is this even possible with Highcharts?
Right now the Animation goes from left,bottom to right,up - is there an option for an animation direction? I want to start the animation from the full width (fully expanded on the xAxis) to go upwarts the yAxis.
My Options:
var $chart = $('#chart');
var chart = new Highcharts.Chart({
chart: {
renderTo: $chart[0],
type: 'area',
style: {
fontFamily: 'Arial, sans-serif'
}
},
legend: {
layout: 'vertical',
align: 'center',
verticalAlign: 'bottom',
itemMarginBottom: 15,
borderWidth: 0,
itemStyle: {
color: '#9a9a9a',
fontWeight: '300',
fontSize: '16px',
useHTML: true,
}
},
title: false,
xAxis: {
categories: ['0', '5', '10', '15', '20', '25', '30'],
lineColor: '#9a9a9a',
minTickInterval: 5,
title: {
text: 'Years',
style: {
color: '#000',
fontSize: '14px',
fontWeight: 'bold'
}
},
labels: {
style: {
color: '#9a9a9a',
fontSize: '14px'
}
}
},
yAxis: {
min: 0,
tickAmount:5,
minorTickInterval: 0,
minorGridLineColor: '#9a9a9a',
gridLineWidth: 1,
maxPadding: 0.1,
title: {
text: 'Eur',
style: {
color: '#000',
fontSize: '14px',
fontWeight: 'bold'
}
},
labels: {
format: '{value:,.0f}',
style: {
color: '#9a9a9a',
fontSize: '14px'
}
}
},
tooltip: {
backgroundColor: '#FCFFC5'
},
plotOptions: {
series: {
borderWidth: 0,
pointPadding: 0.2,
groupPadding: 0,
style: {
color: '#000',
fontSize: '16px',
fontWeight: '300'
}
}
},
series: [
{
name: '2',
legendIndex: 2,
color: '#83bd3f',
animation: {
duration: 3000
},
data: [1042,
2128,
3259,
4438,
5666,
6946,
7652
]
},
{
name: '1',
legendIndex: 1,
color: '#24356d',
animation: {
duration: 2000
},
data: [1024,2073,3146,
4246,
5372,
6525,
7705
]
},
{
name: 'Eingezahlte Rate',
legendIndex: 0,
color: '#9a9a9a',
animation: {
duration: 1000
},
data: [
1000,
2000,
3000,
4000,
5000,
6000,
7000
]
}
]
});`
Thanks

You can use series.afterAnimate event in which you can fire animation for another series.
In your first series set afterAnimate like this:
events: {
afterAnimate: function () {
this.chart.get('1').update({
visible: true,
animation: {
duration: 2000
},
events: {
afterAnimate: function () {
this.chart.get('2').update({
visible: true,
animation: {
duration: 3000
}
})
}
}
})
}
},
For the other series, initially you can disable animation or/and set their visibility to false:
series: [{
name: '2',
id: '2',
legendIndex: 2,
color: '#83bd3f',
animation: {
duration: 0
},
visible: false,
To change the direction of the animation you need to wrap series.animate
method and change how the clipping rect is animated.
(function(H) {
H.wrap(H.seriesTypes.area.prototype, 'animate', function(proceed, init) {
var series = this,
chart = series.chart,
clipRect,
animation = H.animObject(series.options.animation),
sharedClipKey,
newH;
if (init) {
return proceed.apply(this, Array.prototype.slice.call(arguments, 1));
} else {
sharedClipKey = this.sharedClipKey;
clipRect = chart[sharedClipKey];
if (clipRect) {
clipRect.attr({
y: chart.plotSizeY,
height: 0,
width: chart.plotSizeX
}).animate({
y: 0,
height: chart.plotSizeY
}, animation);
}
if (chart[sharedClipKey + 'm']) {
chart[sharedClipKey + 'm'].attr({
y: chart.plotSizeY,
height: 0,
width: chart.plotSizeX + 99
}).animate({
y: 0,
height: chart.plotSizeY
}, animation);
}
// Delete this function to allow it only once
series.animate = null;
}
});
})(Highcharts)
example: http://jsfiddle.net/0esjvmgL/

Highcharts treemap with colouraxis updating styles

I've tried various ways of updating treemap color axis legend font size and font family
var options = {
colorAxis: {
minColor: '#FFFFFF',
maxColor: Highcharts.getOptions().colors[0],
labels: {
style: {
fontSize: '10px',
fontFamily: 'Arial'
}
}
},
series: [{
type: 'treemap',
layoutAlgorithm: 'squarified',
data: [{
name: 'A', value: 6,colorValue: 1 }, { name: 'B',value: 6,colorValue: 2 }, {
name: 'C',value: 4,colorValue: 3}, {name: 'D',value: 3,colorValue: 4 }, {
name: 'E',value: 2,colorValue: 5 }, {name: 'F',value: 2, colorValue: 6}, {
name: 'G',value: 1,colorValue: 7}] }],
title: {
text: 'Highcharts Treemap'
}
};
var chart = Highcharts.chart('container', options);
$('#update').click(function () {
chart.update({
chart:{
style: {
fontSize: '20px',
fontFamily: 'HelveticaNeue'
}
},
legend: {
itemStyle: {
fontSize: '20px',
fontFamily: 'HelveticaNeue'
}
},
colorAxis: {
labels: {
style: {
fontSize: '20px',
fontFamily: 'HelveticaNeue'
}
}}
});
chart.legend.update({
itemStyle: {
fontSize: '20px',
fontFamily: 'HelveticaNeue'
}
})
});
Please see here - http://jsfiddle.net/hsuh/t04qe2xx/8/
Style doesn't seem to be updated. Please help. Thanks

Your click event is not fired because of the difference in id.
Remove hash from button's id: <button id='update'> Update </button>
Then you can update axis via axis.update()
$('#update').click(function() {
chart.colorAxis[0].update({
labels: {
style: {
fontSize: '20px'
}
}
})
});
example: http://jsfiddle.net/t04qe2xx/9/