使用echarts实现折线图的拖拽,供大家参考,具体内容如下
<!DOCTYPE html> <html> <head> <Meta charset="utf-8"> <script src="./echarts.js"></script> </head> <body> <div id="main" style="width: 600px;height:400px;"></div> <script type="text/javascript"> var symbolSize = 20; var data = [[15,0],[-50,10],[-56.5,20],[-46.5,30],[-22.1,40]]; var myChart = echarts.init(document.getElementById('main')); myChart.setOption({ # 表示不使用默认的『显示』『隐藏』触发规则。 tooltip: { triggerOn: 'none',formatter: function (params) { return 'X: ' + params.data[0].toFixed(2) + '<br>Y: ' + params.data[1].toFixed(2); } },xAxis: { min: -100,max: 80,type: 'value',axisLine: {onZero: false} },yAxis: { min: -30,max: 60,series: [ { id: 'a',type: 'line',smooth: true,symbolSize: symbolSize,data: data } ],}); myChart.setOption({ #拖拽功能:用 graphic 组件,在每个点上面,覆盖一个隐藏的可拖拽的圆点 graphic: echarts.util.map(data,function (item,dataIndex) { return { type: 'circle',position: myChart.convertToPixel('grid',item),shape: { r: symbolSize / 2 },invisible: true,draggable: true,ondrag: echarts.util.curry(onPointDragging,dataIndex),onmousemove: echarts.util.curry(showTooltip,onmouSEOut: echarts.util.curry(hideTooltip,z: 100 }; }) }); window.addEventListener('resize',function () { myChart.setOption({ graphic: echarts.util.map(data,dataIndex) { return { position: myChart.convertToPixel('grid',item) }; }) }); }); function showTooltip(dataIndex) { myChart.dispatchAction({ type: 'showTip',seriesIndex: 0,dataIndex: dataIndex }); } function hideTooltip(dataIndex) { myChart.dispatchAction({ type: 'hideTip' }); } function onPointDragging(dataIndex,dx,dy) { data[dataIndex] = myChart.convertFromPixel('grid',this.position); myChart.setOption({ series: [{ id: 'a',data: data }] }); } </script> </body> </html>
原文链接:/js/534800.html