[英]Define colors in pie chart dynamically data
我想根據JSON文件的內容在餅圖中不斷定義每個切片的顏色。 因此,如果JSON文件是op = [{name: "Idle", y: 3},{name: "Overload", y: 7}]
但有時它還在不斷變化,則格式數據始終包含string(name:Busy / Overload / Idle)和int(y)。
我嘗試了不同的方法,其中之一:
ngOnInit() {
this.indicatorservice.getIndicator().subscribe((res)=>{
this.indicator = res;
let op = this.indicator.map(e=>{
let key = Object.keys(e)[0]
return { name: key, y: +e[key] }
})
op.forEach(element => {
if (element.name == 'Busy') {
this.colorVal = '#ffff00';
}
if (element.name == 'Idle') {
this.colorVal = '#008000';
}
if (element.name == 'Overload') {
this.colorVal = '#ff0000';
}
});
setTimeout( ()=>{
this.Highcharts.chart({
chart: {
plotBackgroundColor: null,
plotBorderWidth: null,
plotShadow: false,
type: 'pie',
renderTo:'container',
},
title: {
text: 'Todays Shift Indicator'
},
tooltip: {
pointFormat: '{series.name}: <b>{point.percentage:.1f}%</b>'
},
plotOptions: {
pie: {
allowPointSelect: true,
cursor: 'pointer',
dataLabels: {
enabled: true,
format: '<b>{point.name}</b>: {point.percentage:.1f} %',
style: {
color: 'white'
}
}
}
},
series: [{
name: 'Brands',
colorByPoint: true,
data: op,
color: this.colorVal
}]
})},300);
})
}
動態采樣數據:
op : [{name: "Idle", y: 3},{name: "Overload", y: 7},{name: "Busy", y: 2}]
or sometimes...
op : [{name: "Idle", y: 3},{name: "Overload", y: 7}]
etc.
但不幸的是,它不起作用。
任何幫助,將不勝感激。 謝謝
您需要在點級別上設置顏色:
op.forEach(element => {
if (element.name == 'Busy') {
element.color = '#ffff00';
}
if (element.name == 'Idle') {
element.color = '#008000';
}
if (element.name == 'Overload') {
element.color = '#ff0000';
}
});
現場演示: http : //jsfiddle.net/BlackLabel/850wx1L3/
API參考: https : //api.highcharts.com/highcharts/series.pie.data.color
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