bar-漸變色柱形圖,tooltip小標籤顯示漸變顏色
阿新 • • 發佈:2018-12-07
var legendData = ['A', 'B', 'C', 'D']; var xData = ['1', '2', '3', '4', '5']; var data1 = [10, 20, 30, 40, 50]; var data2 = [11, 21, 31, 41, 51]; var data3 = [12, 22, 32, 42, 52]; var data4 = [13, 23, 33, 43, 53]; var datas = [data1, data2, data3, data4]; var offsetcolor0 = ['rgb(255,182,193,1)', 'rgba(0,0,255,1)', 'rgb(0,205,102,1)', 'rgb(119,136,153,1)']; var offsetcolor1 = ['rgb(255,182,193,.1)', 'rgba(0,0,255,.1)', 'rgb(0,205,102,.1)', 'rgb(119,136,153,.1)']; // series值 var seriesData = []; for (var i = 0; i < 4; i++) { var seriesData0 = { name: legendData[i], type: 'bar', data: datas[i], itemStyle: { //折線顏色不取漸變色,取color設定值 normal: { color: new echarts.graphic.LinearGradient( 0, 0, 0, 1, [{ offset: 0, //開始位置,從上向下 color: offsetcolor0[i] }, { offset: 1, color: offsetcolor1[i] } ] ) } }, }; // 填充到seriesData中 seriesData.push(seriesData0); } option = { //定義線的顏色,series.type='line'取,series.type='bar'不取 grid: { left: '20%', right: '20%', bottom: '20%', }, tooltip: { trigger: 'axis', formatter: function(params) { var name = '時間:' + params[0].name + ":00<br/>"; //x軸名稱 var str = ''; //輔助變數,儲存要展示的提示資訊 // 獲取到各系列的漸變色 var series_colors = []; for (var i = 0; i < params.length; i++) { // params.length為4,代表4個系列,每次懸浮時觸發tooltip樣式 series_colors[i] = params[i].color.colorStops[0].color; //取到漸變色的值,也可以用offsetcolor0[i]代替 // 重定義marker值 params[i].marker = "<span style='display:inline-block;margin-right:5px;border-radius:10px;width:9px;height:9px;background-color:" + series_colors[i] + "'></span>"; str = str + params[i].marker + params[i].seriesName + ":" + params[i].value + "<br/>"; } // 返回結果值 return name + str; }, }, legend: { data: legendData, selectedMode:false,//禁止選圖例 }, calculable: true, xAxis: [{ type: 'category', axisTick: { show: false }, data: xData }], yAxis: [{ type: 'value' }], series: [], }; // 設定series值 option.series = seriesData;