高图中的两条同步垂直线 [英] Two synchronized vertical lines in highcharts
本文介绍了高图中的两条同步垂直线的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我最近遇到了一个非常好的示例: https://jsfiddle.net/BlackLabel/7t59w4po/
I recently came across this really nice example: https://jsfiddle.net/BlackLabel/7t59w4po/
基本上，它的作用是使所有其他图形中的一个图形中的一条线的拖动同步.
Basically, what it does is that it synchronizes the drag of a line in one graph in all the other graphs.
我想知道是否有人可以帮助我重现相同的示例，但是我希望有两条垂直线而不是一条垂直线.这可能吗?
I was wondering if someone could help me out to reproduce the same example, but instead of one vertical line, I would like to have two. Is this possible?
谢谢！
JS代码:
/*
The purpose of this demo is to demonstrate how multiple charts on the same page
can be linked through DOM and Highcharts events and API methods. It takes a
standard Highcharts config with a small variation for each data set, and a
mouse/touch event handler to bind the charts together.
*/
/**
* In order to synchronize tooltips and crosshairs, override the
* built-in events with handlers defined on the parent element.
*/
['mousemove', 'touchmove', 'touchstart'].forEach(function(eventType) {
document.getElementById('container').addEventListener(
eventType,
function(e) {
var chart,
point,
i,
event;
for (i = 0; i < Highcharts.charts.length; i = i + 1) {
chart = Highcharts.charts[i];
// Find coordinates within the chart
event = chart.pointer.normalize(e);
// Get the hovered point
point = chart.series[0].searchPoint(event, true);
if (point) {
point.highlight(e);
}
}
}
);
});
/**
* Override the reset function, we don't need to hide the tooltips and
* crosshairs.
*/
Highcharts.Pointer.prototype.reset = function() {
return undefined;
};
/**
* Highlight a point by showing tooltip, setting hover state and draw crosshair
*/
Highcharts.Point.prototype.highlight = function(event) {
event = this.series.chart.pointer.normalize(event);
this.onMouseOver(); // Show the hover marker
this.series.chart.tooltip.refresh(this); // Show the tooltip
this.series.chart.xAxis[0].drawCrosshair(event, this); // Show the crosshair
};
/**
* Synchronize zooming through the setExtremes event handler.
*/
function syncExtremes(e) {
var thisChart = this.chart;
if (e.trigger !== 'syncExtremes') { // Prevent feedback loop
Highcharts.each(Highcharts.charts, function(chart) {
if (chart !== thisChart) {
if (chart.xAxis[0].setExtremes) { // It is null while updating
chart.xAxis[0].setExtremes(
e.min,
e.max,
undefined,
false, {
trigger: 'syncExtremes'
}
);
}
}
});
}
}
/**
* Synchronize annotations drag&drop
*/
function syncAnnotations(e) {
var thisChart = this.chart;
var newX = this.options.shapes[0].points[0].x
if (e.type !== 'afterUpdate') {
Highcharts.each(Highcharts.charts, function(chart) {
if (chart !== thisChart) {
chart.annotations[0].update({
labels: [{
point: {
x: newX
}
}],
shapes: [{
points: [{
x: newX,
xAxis: 0,
y: 0
}, {
x: newX,
xAxis: 0,
y: 1000
}]
}]
});
}
});
}
}
// Get the data. The contents of the data file can be viewed at
Highcharts.ajax({
url: 'https://cdn.jsdelivr.net/gh/highcharts/highcharts@v7.0.0/samples/data/activity.json',
dataType: 'text',
success: function(activity) {
activity = JSON.parse(activity);
activity.datasets.forEach(function(dataset, i) {
// Add X values
dataset.data = Highcharts.map(dataset.data, function(val, j) {
return [activity.xData[j], val];
});
var chartDiv = document.createElement('div');
chartDiv.className = 'chart';
document.getElementById('container').appendChild(chartDiv);
Highcharts.chart(chartDiv, {
chart: {
marginLeft: 40, // Keep all charts left aligned
spacingTop: 20,
spacingBottom: 20
},
title: {
text: dataset.name,
align: 'left',
margin: 0,
x: 30
},
credits: {
enabled: false
},
legend: {
enabled: false
},
xAxis: {
crosshair: true,
events: {
setExtremes: syncExtremes
},
labels: {
format: '{value} km'
}
},
yAxis: {
title: {
text: null
}
},
annotations: [{
draggable: 'x',
animation: {
defer: false
},
events: {
drag: syncAnnotations,
afterUpdate: syncAnnotations
},
shapes: [{
strokeWidth: 3,
type: 'path',
points: [{
x: 3,
y: 0,
xAxis: 0
}, {
x: 3,
y: 1000,
xAxis: 0
}]
}],
labels: [{
point: {
x: 3,
y: 30,
xAxis: 0
},
shape: 'rect',
formatter: function(e) {
// Use shape options because value is available there. Label use translation only
return this.target.annotation.shapes[0].options.points[0].x.toFixed(3);
}
}]
}],
tooltip: {
positioner: function() {
return {
// right aligned
x: this.chart.chartWidth - this.label.width,
y: 10 // align to title
};
},
borderWidth: 0,
backgroundColor: 'none',
pointFormat: '{point.y}',
headerFormat: '',
shadow: false,
style: {
fontSize: '18px'
},
valueDecimals: dataset.valueDecimals
},
series: [{
data: dataset.data,
name: dataset.name,
type: dataset.type,
color: Highcharts.getOptions().colors[i],
fillOpacity: 0.3,
tooltip: {
valueSuffix: ' ' + dataset.unit
}
}]
});
});
}
});
推荐答案
您只需要添加另一个注释:
You only need to add another annotation:
annotations: [{
...,
{
...
}],
并稍微改进 syncAnnotations 函数:
function syncAnnotations(e) {
var thisChart = this.chart;
var newX = this.options.shapes[0].points[0].x
var index = this.chart.annotations.indexOf(this);
if (e.type !== 'afterUpdate') {
Highcharts.each(Highcharts.charts, function(chart) {
if (chart !== thisChart) {
chart.annotations[index].update({
...
});
}
});
}
}
实时演示: https://jsfiddle.net/BlackLabel/jwtLc379/
API参考: https://api.highcharts.com/highcharts/annotations
这篇关于高图中的两条同步垂直线的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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