Echarts, how to use data series to switch color of line
Question
I want to use the data field to change the color of the line for a certain pice. Like when it is 1, it should be green, and when it is 2 it should be yellow. This snippet is only changing the color of the data point, not the line? Is there any chance to archive that with echarts?
<html> <head> <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/echarts/4.1.0/echarts.min.js"></script> </head> <body> <div id="main_chart" style="width: 1200px;height:600px;"></div> <script type="text/javascript"> // based on prepared DOM, initialize echarts instance var myChart = echarts.init(document.getElementById('main_chart')); var app = {}; option = null; option = { xAxis: { type: 'category', data: ['2012-03-01 05:06', '2012-03-01 05:07', '2012-03-01 05:08', '2012-03-01 05:09', '2012-03-01 05:10', '2012-03-01 05:11'] }, yAxis: { type: 'value' }, visualMap: { show: false, dimension: 2, pieces: [ { lt: 2, gt: 0, color: 'green' }, { gte: 2, color: 'red' } ] }, series: [{ data: [[1,37,1],[2,36,1],[3,36,2]], type: 'line', areaStyle: {} }] }; if (option && typeof option === "object") { myChart.setOption(option, true); } </script> </body> </html>
1 answers
solution1
3 2018-10-26 19:57:31
Try this example
1) You should use the right dimension (xAxis, yAxis), for more info read documentation
2) If you want to color full area, please remove color: "aquamarine" from areaStyle, then it will be colorizate by pieces configs
<html> <head> <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/echarts/4.1.0/echarts.min.js"></script> </head> <body> <div id="main_chart" style="width: 1200px;height:600px;"></div> <script type="text/javascript"> // based on prepared DOM, initialize echarts instance var myChart = echarts.init(document.getElementById('main_chart')); var app = {}; option = null; option = { xAxis: { type: 'category', data: ['2012-03-01 05:06', '2012-03-01 05:07', '2012-03-01 05:08', '2012-03-01 05:09', '2012-03-01 05:10', '2012-03-01 05:11'] }, yAxis: { type: 'value' }, visualMap: { show: false, dimension: 0, pieces: [ { lt: 2, gt: 0, color: 'green' }, { gt: 2, lt: 3, color: 'red' }, { gte: 3, color: 'yellow' } ] }, series: [{ data: [[1,37,1],[2,36,1],[3,36,2],[4,38,2]], type: 'line', areaStyle: {color: "aquamarine"} }] }; if (option && typeof option === "object") { myChart.setOption(option, true); } </script> </body> </html>
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