本文介绍了Highchart,在setExtremes之后获得可见的系列数据的总数的处理方法,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
在我的jsfiddle中点击,我怎样才能得到只有那些在我使用setExtremes更新了高图线图后可见的系列数据点的总数。按钮显示获得结果4,但它是停留5:(
$(function(){
$('#container')。highcharts({
chart:{
events:{
load:function(){
$('#total' ).text(arraySum(this.series [0] .processedYData));
}
}
},
xAxis:{
type: 'datetime'
},
series:[{
data:[1,1,1,1,1],
pointStart:Date.UTC(2010 ,0,1),
pointInterval:24 * 3600 * 1000
}]
});
//按钮操作
$('#button')。click(function(){
var chart = $('的#container)highcharts();
chart.xAxis [0] .setExtremes(Date.UTC(2010,0,2),Date.UTC(2010,0,8));
$('#total')。text('calculate again');
setTimeout(function(){
$('#total')。text(arraySum(chart.series [0] .processedYData));
},200);
});
});
函数arraySum数据){
var sum = 0;
for(var i = 0; i< data.length; i ++){
if(data [i]){
sum + = data [i];
}
}
归还金额;
}
解决方案 div>
我认为更简单的是抓住SetExtremes事件,然后调用所有系列点的循环。添加检查极值(最小/最大)和总和的条件。
afterSetExtremes:function(min,max){
var serie = this.chart.series [0],
min = this.getExtremes()。min,
max = this.getExtremes()。max,
sum = 0;
$ .each(serie.data,function(i,p){
if(px> = min&& px< = max){
sum + = py;
}
});
$('#sum')。text(sum);
}
示例:
How can I get the total of only those data points in series which are visible after I have updated the highchart line graph using setExtremes.
In my jsfiddle clicking on button show get the result 4 but it's stays 5 :(
http://jsfiddle.net/deepakgc/hz8fopan/
$(function () {
$('#container').highcharts({
chart:{
events:{
load:function(){
$('#total').text(arraySum(this.series[0].processedYData));
}
}
},
xAxis: {
type: 'datetime'
},
series: [{
data: [1, 1, 1, 1, 1],
pointStart: Date.UTC(2010, 0, 1),
pointInterval: 24 * 3600 * 1000
}]
});
// the button action
$('#button').click(function () {
var chart = $('#container').highcharts();
chart.xAxis[0].setExtremes(Date.UTC(2010, 0, 2), Date.UTC(2010, 0, 8));
$('#total').text('calculating again');
setTimeout(function(){
$('#total').text(arraySum(chart.series[0].processedYData));
},200);
});
});
function arraySum(data) {
var sum = 0;
for (var i = 0; i < data.length; i++) {
if (data[i]) {
sum += data[i];
}
}
return sum;
}
解决方案
I think that simpler is catch afterSetExtremes event and then call loop over all series points. Add condition which checks extremes (min/max) and sum.
afterSetExtremes:function(min,max){
var serie = this.chart.series[0],
min = this.getExtremes().min,
max = this.getExtremes().max,
sum = 0;
$.each(serie.data, function(i, p){
if(p.x >= min && p.x <=max) {
sum += p.y;
}
});
$('#sum').text(sum);
}
Example: http://jsfiddle.net/yagpzkup/1/
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10-24 17:27