使用Highcharts按ID选择一个点 [英] Selecting a point by ID using Highcharts
问题描述
使用Highcharts,我如何使用它的ID选择一个点?例如,如果我使用以下代码创建图表:
chart1 = new Highcharts.Chart({
图表:{
renderTo:'container',
type:'scatter'
},
title:{
text:'Fruit Consumption'
},
xAxis:{
categories:['Apples','Bananas','Oranges']
},
yAxis:{
title:{
text:'吃了水果'
}
},
系列:[{
name:'Jane',
data:[{
name:' Point1',
x:1,
y:2
},{
名称:'Point2',
x:2,
y:5
}]
},{
name:'John',
data:[5,7,3]
}]
});
});
工具提示告诉我,当我将鼠标悬停在某个点上时,该id是什么。但是,我无法弄清楚这一点的语法。我知道 chart1.series [0] .name
返回 Jane。此外,
chart1.series [0] .data [0] .name 返回
point1`有没有简单的方法,我可以只需要选择点并改变颜色只知道'point1'?
我想知道是否有一种更有效的方法,而不是每次循环遍历所有点。
您可以为每个要设置的点设置一个 id
得到。
系列:[{
name:'Jane',
data:[ {
'name':'Point1',
'id':'point1',
'x':1,
'y':2
}, {
'name':'Point2',
'id':'point2',
'x':2,
'y':5
}]
},{
name:'John',
data:[5,7,3]
}]
然后您可以通过以下代码获得该点。
//假设图表是你的图表var
chart.get('point1');
id $ < c $ c>你可以简单地循环thrue points
来比较你想要找到的 name
和点名称
。
参考:
Using Highcharts, how can I select a point using it's id? For example, if I create a chart using the following code:
chart1 = new Highcharts.Chart({
chart: {
renderTo: 'container',
type: 'scatter'
},
title: {
text: 'Fruit Consumption'
},
xAxis: {
categories: ['Apples', 'Bananas', 'Oranges']
},
yAxis: {
title: {
text: 'Fruit eaten'
}
},
series: [{
name: 'Jane',
data: [{
name: 'Point1',
x: 1,
y: 2
}, {
name: 'Point2',
x: 2,
y: 5
}]
}, {
name: 'John',
data: [5, 7, 3]
}]
});
});
The tooltip tells me that when I hover over a point, what the id is. However, I can't figure out the syntax to identify that point. I know that chart1.series[0].name
returns Jane. Also,
chart1.series[0].data[0].namereturns
point1` Is there an easy way that I can just select the point and change the color knowing only 'point1'?
I'm wondering if there is a more efficient way other than looping through all of the points each time.
You can set an id
for each point you want to get.
series: [{
name: 'Jane',
data: [{
'name': 'Point1',
'id': 'point1',
'x': 1,
'y': 2
}, {
'name': 'Point2',
'id': 'point2',
'x': 2,
'y': 5
}]
}, {
name: 'John',
data: [5, 7, 3]
}]
Then you can get the point by the following code.
// assuming that chart is your chart var
chart.get('point1');
Or if you don't want to set an id
you can simple loop thrue points
to compare the name
you want to find with the point name
.
Reference:
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