Javascript 将最后一个值添加到图表中的图例
当不悬停在AmCharts图形上时,是否有方法将图形中的最后一个值添加到图例名称 这是一支带有演示图的代码笔。 下面是js代码Javascript 将最后一个值添加到图表中的图例,javascript,amcharts,Javascript,Amcharts,当不悬停在AmCharts图形上时,是否有方法将图形中的最后一个值添加到图例名称 这是一支带有演示图的代码笔。 下面是js代码 var chartData = generateChartData(); var chart = AmCharts.makeChart("chartdiv", { "type": "serial", "theme": "light", "legend": { "periodValueText":"last"
var chartData = generateChartData();
var chart = AmCharts.makeChart("chartdiv", {
"type": "serial",
"theme": "light",
"legend": {
"periodValueText":"last"
},
"dataProvider": chartData,
"synchronizeGrid":true,
"valueAxes": [{
"id":"v1",
"axisColor": "#FF6600",
"axisThickness": 2,
"axisAlpha": 1,
"position": "left"
}, {
"id":"v2",
"axisColor": "#FCD202",
"axisThickness": 2,
"axisAlpha": 1,
"position": "right"
}, {
"id":"v3",
"axisColor": "#B0DE09",
"axisThickness": 2,
"gridAlpha": 0,
"offset": 50,
"axisAlpha": 1,
"position": "left"
}],
"graphs": [{
"valueAxis": "v1",
"lineColor": "#FF6600",
"bullet": "round",
"bulletBorderThickness": 1,
"hideBulletsCount": 30,
"title": "red line",
"valueField": "visits",
"fillAlphas": 0
}, {
"valueAxis": "v2",
"lineColor": "#FCD202",
"bullet": "square",
"bulletBorderThickness": 1,
"hideBulletsCount": 30,
"title": "yellow line",
"valueField": "hits",
"fillAlphas": 0
}, {
"valueAxis": "v3",
"lineColor": "#B0DE09",
"bullet": "triangleUp",
"bulletBorderThickness": 1,
"hideBulletsCount": 30,
"title": "green line",
"valueField": "views",
"fillAlphas": 0
}],
"chartScrollbar": {},
"chartCursor": {
"cursorPosition": "mouse"
},
"categoryField": "date",
"categoryAxis": {
"parseDates": true,
"axisColor": "#DADADA",
"minorGridEnabled": true
}
});
chart.addListener("dataUpdated", zoomChart);
zoomChart();
// generate some random data, quite different range
function generateChartData() {
var chartData = [];
var firstDate = new Date();
firstDate.setDate(firstDate.getDate() - 100);
for (var i = 0; i < 100; i++) {
// we create date objects here. In your data, you can have date strings
// and then set format of your dates using chart.dataDateFormat property,
// however when possible, use date objects, as this will speed up chart rendering.
var newDate = new Date(firstDate);
newDate.setDate(newDate.getDate() + i);
var visits = Math.round(Math.sin(i * 5) * i);
var hits = Math.round(Math.random() * 80) + 500 + i * 3;
var views = Math.round(Math.random() * 6000) + i * 4;
chartData.push({
date: newDate,
visits: visits,
hits: hits,
views: views
});
}
return chartData;
}
function zoomChart(){
chart.zoomToIndexes(chart.dataProvider.length - 20, chart.dataProvider.length - 1);
}
var chartData=generateChartData();
var chart=AmCharts.makeChart(“chartdiv”{
“类型”:“串行”,
“主题”:“光”,
“传奇”:{
“periodValueText”:“上次”
},
“数据提供者”:图表数据,
“synchronizeGrid”:正确,
“价值轴”:[{
“id”:“v1”,
“axisColor”:“FF6600”,
"厚度":二,,
“axisAlpha”:1,
“位置”:“左”
}, {
“id”:“v2”,
“axisColor”:“FCD202”,
"厚度":二,,
“axisAlpha”:1,
“位置”:“正确”
}, {
“id”:“v3”,
“axisColor”:“#B0DE09”,
"厚度":二,,
“gridAlpha”:0,
“偏移量”:50,
“axisAlpha”:1,
“位置”:“左”
}],
“图表”:[{
“valueAxis”:“v1”,
“lineColor”:“FF6600”,
“子弹”:“圆形”,
“厚度”:1,
“HidebulletScont”:30,
“标题”:“红线”,
“valueField”:“访问”,
“填充字母”:0
}, {
“valueAxis”:“v2”,
“线条颜色”:“FCD202”,
“子弹”:“方形”,
“厚度”:1,
“HidebulletScont”:30,
“标题”:“黄线”,
“valueField”:“点击次数”,
“填充字母”:0
}, {
“valueAxis”:“v3”,
“lineColor”:“B0DE09”,
“bullet”:“triangleUp”,
“厚度”:1,
“HidebulletScont”:30,
“标题”:“绿线”,
“valueField”:“视图”,
“填充字母”:0
}],
“图表滚动条”:{},
“图表光标”:{
“光标位置”:“鼠标”
},
“类别字段”:“日期”,
“分类法”:{
“parseDates”:正确,
“axisColor”:“DADADA”,
“minorGridEnabled”:真
}
});
chart.addListener(“数据更新”,zoomChart);
zoomChart();
//生成一些随机数据,范围大不相同
函数generateChartData(){
var chartData=[];
var firstDate=新日期();
firstDate.setDate(firstDate.getDate()-100);
对于(变量i=0;i<100;i++){
//我们在这里创建日期对象。在数据中,可以有日期字符串
//然后使用chart.dataDateFormat属性设置日期的格式,
//但是,如果可能,请使用日期对象,因为这将加快图表渲染速度。
var newDate=新日期(firstDate);
newDate.setDate(newDate.getDate()+i);
var访问=数学轮(数学sin(i*5)*i);
var hits=Math.round(Math.random()*80)+500+i*3;
var views=Math.round(Math.random()*6000)+i*4;
chartData.push({
日期:newDate,
访问:访问,
点击率:点击率,
视图:视图
});
}
返回图表数据;
}
函数zoomChart(){
chart.zoomToIndex(chart.dataProvider.length-20,chart.dataProvider.length-1);
}
我相信这与此有关,但我不知道如何实现同样的目标。如有任何帮助,我们将不胜感激。您已正确指出需要使用。您只需要在其中使用双括号的元代码。对于关闭值,它是
[[value.close]]
:
"legend": {
"periodValueText":"[[value.close]]"
}
您正确地指出了需要使用的。您只需要在其中使用双括号的元代码。对于关闭值,它是
[[value.close]]
:
"legend": {
"periodValueText":"[[value.close]]"
}
但是我真的不明白什么是“[[value.close]]”。如果我将它修改为[[value.close]],它只会打印它……它对我有用。你把引语包括进去了吗?它应该是一个字符串。但我真的不明白什么是“[[value.close]]”。如果我将它修改为[[value.close]],它只会打印它……它对我有用。你把引语包括进去了吗?它应该是一个字符串。