微信小程序使用Echarts绘制K线图与双曲线图以及实现tab切换
2024-04-19 14:26:12
在微信小程序中使用Echarts需要下载相应的文件，可在这下载ec-canvas，该github里也有很多很好的例子，可自行调试学习。
本例子的目录结构：
微信小程序使用Echarts的步骤
- 在需要引入Echarts的页面的json文件中设置组件
按照以上目录结构来理解，就是在index.json文件中设置echarts组件
{"usingComponents": {"ec-canvas": "../../ec-canvas/ec-canvas"}
}
- 设置Echarts图的宽高（如果不设置，可能导致无法显示图表，或者显示的位置超出屏幕外）
index.wxss
ec-canvas {width: 100%;height: 650rpx;border-width: 4rpx 4rpx 4rpx 4rpx;border-color: rgb(71, 137, 235);border-style: solid;
}
.container1 {top: 0;bottom: 0;left: 0;right: 0;display: flex;flex-direction: column;align-items: center;justify-content: space-between;box-sizing: border-box;margin-left: 10rpx;margin-right: 10rpx;
}
- 在需要展示图表的位置引入ec-canvas标签
index.wxml
<!-- k线图 --><view class="container1"><ec-canvas id="mychart-dom-area" canvas-id="mychart-area" ec="{{ ec }}"></ec-canvas></view><!-- 数据曲线 --><view class="container1"><ec-canvas id="mychart-dom-line" canvas-id="mychart-line" ec="{{ ec3 }}"></ec-canvas></view>
ec-canvas标签中的id和canvas-id需要匹配相应图形（似乎不对应也可以显示，但为避免意外，还是尽量匹配，这里使用的是k线图和曲线图）
- 具体的绘制细节在js文件中实现（代码中具体参数如有不懂，可参考echarts官网说明）
index.js
const app = getApp()
import * as echarts from '../../ec-canvas/echarts';
// K线图所用颜色
var upColor = '#fdbc07';
var upBorderColor = '#8A0000';
var downColor = '#00da3c';
var downBorderColor = '#008F28';// 双曲线所用颜色
var colors = ['#5793f3', '#d14a61', '#675bba'];// 绘制双曲线所用数据
var timeArray = ["1903","1904","1905","1906","1907","1908","1909","1910"]
var resArray = [1.728,1.728,1.324,0.428,4.1480,13.496,14.048,11.258]
var udpArray = [3.37302, 23.2845, - 11.094, 11.5066, -19.9232- 10.1191,- 4.4812,5.88576]// 绘制k线图所用数据，数据意义：开盘(open)，收盘(close)，最低(lowest)，最高(highest)
var data0 = splitData([['2013/1/24', 2320.26, 2320.26, 2287.3, 2362.94],['2013/1/25', 2300, 2291.3, 2288.26, 2308.38],['2013/1/28', 2295.35, 2346.5, 2295.35, 2346.92],['2013/1/29', 2347.22, 2358.98, 2337.35, 2363.8],['2013/1/30', 2360.75, 2382.48, 2347.89, 2383.76],['2013/1/31', 2383.43, 2385.42, 2371.23, 2391.82],['2013/2/1', 2377.41, 2419.02, 2369.57, 2421.15],['2013/2/4', 2425.92, 2428.15, 2417.58, 2440.38],['2013/2/5', 2411, 2433.13, 2403.3, 2437.42],['2013/2/6', 2432.68, 2434.48, 2427.7, 2441.73],['2013/2/7', 2430.69, 2418.53, 2394.22, 2433.89],['2013/2/8', 2416.62, 2432.4, 2414.4, 2443.03],['2013/2/18', 2441.91, 2421.56, 2415.43, 2444.8],['2013/2/19', 2420.26, 2382.91, 2373.53, 2427.07],['2013/2/20', 2383.49, 2397.18, 2370.61, 2397.94],['2013/2/21', 2378.82, 2325.95, 2309.17, 2378.82],['2013/2/22', 2322.94, 2314.16, 2308.76, 2330.88],['2013/2/25', 2320.62, 2325.82, 2315.01, 2338.78],['2013/2/26', 2313.74, 2293.34, 2289.89, 2340.71],['2013/2/27', 2297.77, 2313.22, 2292.03, 2324.63],['2013/2/28', 2322.32, 2365.59, 2308.92, 2366.16],['2013/3/1', 2364.54, 2359.51, 2330.86, 2369.65],['2013/3/4', 2332.08, 2273.4, 2259.25, 2333.54],['2013/3/5', 2274.81, 2326.31, 2270.1, 2328.14],['2013/3/6', 2333.61, 2347.18, 2321.6, 2351.44],['2013/3/7', 2340.44, 2324.29, 2304.27, 2352.02],['2013/3/8', 2326.42, 2318.61, 2314.59, 2333.67],['2013/3/11', 2314.68, 2310.59, 2296.58, 2320.96],['2013/3/12', 2309.16, 2286.6, 2264.83, 2333.29],['2013/3/13', 2282.17, 2263.97, 2253.25, 2286.33],['2013/3/14', 2255.77, 2270.28, 2253.31, 2276.22],['2013/3/15', 2269.31, 2278.4, 2250, 2312.08],['2013/3/18', 2267.29, 2240.02, 2239.21, 2276.05],['2013/3/19', 2244.26, 2257.43, 2232.02, 2261.31],['2013/3/20', 2257.74, 2317.37, 2257.42, 2317.86],['2013/3/21', 2318.21, 2324.24, 2311.6, 2330.81],['2013/3/22', 2321.4, 2328.28, 2314.97, 2332],['2013/3/25', 2334.74, 2326.72, 2319.91, 2344.89],['2013/3/26', 2318.58, 2297.67, 2281.12, 2319.99],['2013/3/27', 2299.38, 2301.26, 2289, 2323.48],['2013/3/28', 2273.55, 2236.3, 2232.91, 2273.55],['2013/3/29', 2238.49, 2236.62, 2228.81, 2246.87],['2013/4/1', 2229.46, 2234.4, 2227.31, 2243.95],['2013/4/2', 2234.9, 2227.74, 2220.44, 2253.42],['2013/4/3', 2232.69, 2225.29, 2217.25, 2241.34],['2013/4/8', 2196.24, 2211.59, 2180.67, 2212.59],['2013/4/9', 2215.47, 2225.77, 2215.47, 2234.73],['2013/4/10', 2224.93, 2226.13, 2212.56, 2233.04],['2013/4/11', 2236.98, 2219.55, 2217.26, 2242.48],['2013/4/12', 2218.09, 2206.78, 2204.44, 2226.26],['2013/4/15', 2199.91, 2181.94, 2177.39, 2204.99],['2013/4/16', 2169.63, 2194.85, 2165.78, 2196.43],['2013/4/17', 2195.03, 2193.8, 2178.47, 2197.51],['2013/4/18', 2181.82, 2197.6, 2175.44, 2206.03],['2013/4/19', 2201.12, 2244.64, 2200.58, 2250.11],['2013/4/22', 2236.4, 2242.17, 2232.26, 2245.12],['2013/4/23', 2242.62, 2184.54, 2182.81, 2242.62],['2013/4/24', 2187.35, 2218.32, 2184.11, 2226.12],['2013/4/25', 2213.19, 2199.31, 2191.85, 2224.63],['2013/4/26', 2203.89, 2177.91, 2173.86, 2210.58],['2013/5/2', 2170.78, 2174.12, 2161.14, 2179.65],['2013/5/3', 2179.05, 2205.5, 2179.05, 2222.81],['2013/5/6', 2212.5, 2231.17, 2212.5, 2236.07],['2013/5/7', 2227.86, 2235.57, 2219.44, 2240.26],['2013/5/8', 2242.39, 2246.3, 2235.42, 2255.21],['2013/5/9', 2246.96, 2232.97, 2221.38, 2247.86],['2013/5/10', 2228.82, 2246.83, 2225.81, 2247.67],['2013/5/13', 2247.68, 2241.92, 2231.36, 2250.85],['2013/5/14', 2238.9, 2217.01, 2205.87, 2239.93],['2013/5/15', 2217.09, 2224.8, 2213.58, 2225.19],['2013/5/16', 2221.34, 2251.81, 2210.77, 2252.87],['2013/5/17', 2249.81, 2282.87, 2248.41, 2288.09],['2013/5/20', 2286.33, 2299.99, 2281.9, 2309.39],['2013/5/21', 2297.11, 2305.11, 2290.12, 2305.3],['2013/5/22', 2303.75, 2302.4, 2292.43, 2314.18],['2013/5/23', 2293.81, 2275.67, 2274.1, 2304.95],['2013/5/24', 2281.45, 2288.53, 2270.25, 2292.59],['2013/5/27', 2286.66, 2293.08, 2283.94, 2301.7],['2013/5/28', 2293.4, 2321.32, 2281.47, 2322.1],['2013/5/29', 2323.54, 2324.02, 2321.17, 2334.33],['2013/5/30', 2316.25, 2317.75, 2310.49, 2325.72],['2013/5/31', 2320.74, 2300.59, 2299.37, 2325.53],['2013/6/3', 2300.21, 2299.25, 2294.11, 2313.43],['2013/6/4', 2297.1, 2272.42, 2264.76, 2297.1],['2013/6/5', 2270.71, 2270.93, 2260.87, 2276.86],['2013/6/6', 2264.43, 2242.11, 2240.07, 2266.69],['2013/6/7', 2242.26, 2210.9, 2205.07, 2250.63],['2013/6/13', 2190.1, 2148.35, 2126.22, 2190.1]
]);// 用于形成data0
function splitData(rawData) {var categoryData = [];var values = []for (var i = 0; i < rawData.length; i++) {categoryData.push(rawData[i].splice(0, 1)[0]);values.push(rawData[i])}return {categoryData: categoryData,values: values};
}// 用于生成K线图中附加的曲线
function calculateMA(dayCount) {var result = [];for (var i = 0, len = data0.values.length; i < len; i++) {if (i < dayCount) {result.push('-');continue;}var sum = 0;for (var j = 0; j < dayCount; j++) {sum += data0.values[i - j][1];}result.push(sum / dayCount);}return result;
}// 椭圆形标识参数
var val = [{name: 'XX标点',coord: ['2013/5/31', 2300],value: 2300,itemStyle: {normal: { color: '#4a8aff' }}},{name: 'highest value',type: 'max',valueDim: 'highest'},{name: 'lowest value',type: 'min',valueDim: 'lowest'},{name: 'average value on close',type: 'average',valueDim: 'close'}
]Page({data: {//k线图绘制初始化ec: '',//双曲线绘制初始化ec3: '',},onLoad: function () {this.setData({// k线图ec: {onInit: this.initChart},// 双曲线ec3: {onInit: this.initChart3}})},// 绘制k线initChart: function (canvas, width, height) {const chart = echarts.init(canvas, null, {width: width,height: height});canvas.setChart(chart);var option = {backgroundColor: '#0F2127',tooltip: {trigger: 'axis',axisPointer: {type: 'cross'},// 鼠标点击时触发triggerOn: 'click',backgroundColor: 'rgba(245, 245, 245, 0.8)',borderWidth: 1,borderColor: '#ccc',padding: 10,textStyle: {color: '#000',// fontSize: 13,},// 避免提示框超出方块圈的情况position: function (pos, params, el, elRect, size) {var obj = { top: 10 };obj[['left', 'right'][+(pos[0] < size.viewSize[0] / 2)]] = 30;return obj;},},legend: {data: ['日K', 'MA5', 'MA10', 'MA20', 'MA30']},grid: {left: '13%',},xAxis: {axisLabel: {show: true,textStyle: {color: '#fff',// fontSize: 13,}},type: 'category',data: data0.categoryData,scale: true,axisTick: { show: false },axisLine: { onZero: false },splitLine: { show: false },splitNumber: 20,min: 'dataMin',max: 'dataMax'},yAxis: {splitLine: { show: false },//去除网格线axisLabel: {textStyle: {color: '#fff',// fontSize: 13}},scale: true,},dataZoom: [{type: 'slider',height: 10,show: true,start: 80,end: 100,handleSize: 8},{type: 'inside',start: 80,end: 100},],series: [{name: '日K',type: 'candlestick',data: data0.values,itemStyle: {normal: {color: upColor,color0: downColor,borderColor: upBorderColor,borderColor0: downBorderColor}},markPoint: {label: {normal: {formatter: function (param) {return param != null ? Math.round(param.value) : '';}}},data: val,tooltip: {formatter: function (param) {return param.name + '<br>' + (param.data.coord || '');}}},markLine: {symbol: ['none', 'none'],data: [[{name: 'from lowest to highest',type: 'min',valueDim: 'lowest',symbol: 'circle',symbolSize: 10,label: {normal: { show: false },emphasis: { show: false }}},{type: 'max',valueDim: 'highest',symbol: 'circle',symbolSize: 10,label: {normal: { show: false },emphasis: { show: false }}}],{name: 'min line on close',type: 'min',valueDim: 'close'},{name: 'max line on close',type: 'max',valueDim: 'close'}]}},{name: 'MA5',type: 'line',data: calculateMA(5),smooth: true,lineStyle: {normal: { opacity: 0.5 }}},{name: 'MA10',type: 'line',data: calculateMA(10),smooth: true,lineStyle: {normal: { opacity: 0.5 }}},{name: 'MA20',type: 'line',data: calculateMA(20),smooth: true,lineStyle: {normal: { opacity: 0.5 }}},{name: 'MA30',type: 'line',data: calculateMA(30),smooth: true,lineStyle: {normal: { opacity: 0.5 }}},]};chart.setOption(option);return chart;},// 绘制双曲线图initChart3: function (canvas, width, height) {const chart = echarts.init(canvas, null, {width: width,height: height});canvas.setChart(chart);var option = {backgroundColor: '#0F2127',color: colors,tooltip: {trigger: 'axis',triggerOn: 'click', // 鼠标点击时触发axisPointer: {type: 'cross'},backgroundColor: 'rgba(245, 245, 245, 0.8)',borderWidth: 1,borderColor: '#ccc',padding: 1,textStyle: {color: '#000',fontSize: 8,},// 避免提示框超出方块圈的情况position: function (pos, params, el, elRect, size) {var obj = { top: 5 };obj[['left', 'right'][+(pos[0] < size.viewSize[0] / 2)]] = 30;return obj;},},legend: {textStyle: {color: '#fff',fontSize: 8},data: ['数值1', '数值2']},xAxis: {axisTick: {show: false,},axisLabel: {textStyle: {color: '#fff',fontSize: 8}},axisLine: {lineStyle: {color: colors[1]}},type: 'category',boundaryGap: false,data: timeArray},yAxis: {splitLine: { show: false },axisTick: {show: false},axisLabel: {textStyle: {color: '#fff',fontSize: 8}},axisLine: {lineStyle: {color: colors[0]}},type: 'value'},grid: {left: '10%',bottom: '13%',top: '10%',},series: [{name: '数值1',type: 'line',smooth: true,data: resArray},{name: '数值2',type: 'line',smooth: true,data: udpArray}]};chart.setOption(option);return chart;}
})- 效果图
微信小程序实现tab切换（k线图与表单切换）
不做过多废话，直接上代码
- index.wxml
<!--index.wxml-->
<!-- k线图与数据表格 -->
<view class="body"><view class="nav"><view class="{{selected?'red':'default'}}" bindtap="selected">K线图</view><view class="{{selected1?'red':'default'}}" bindtap="selected1">数据表格</view></view>
<!-- k线图 --><view class="{{selected?'show':'hidden'}}"><view class="container1"><ec-canvas id="mychart-dom-area" canvas-id="mychart-area" ec="{{ ec }}"></ec-canvas></view>
</view>
<!-- 数据表格 --><view class="{{selected1?'show':'hidden'}}"><scroll-view scroll-x="true" scroll-y="true" class='scrollClass'><view class='table'><view class='table_header'><view class="th1"><view class='cell_label'>序号</view></view><block wx:for="{{indexArray}}" wx:key=""><view wx:if="{{index==0}}"><view class='th0'><view class="cell_label">{{item}}</view></view></view><view wx:else="{{index>0}}"><view class='th1'><view class="cell_label">{{item}}</view></view></view></block></view><block wx:for="{{sch_listData}}" wx:key=""><view class='table_main'><view class='td1'><view class="cell_label">{{index}}</view></view><view class='td0'><view style="color:#4a8aff">{{item.time}}</view></view><view class='td1'><view style="color:#4a8aff">{{item.number}}</view></view><view class='td1'><view style="color:#4a8aff">{{item.price}}</view></view><view class='td1'><view style="color:#4a8aff">{{item.sum}}</view></view><view class='td1'><view style="color:#4a8aff">{{item.one}}</view></view><view class='td1'><view style="color:#4a8aff">{{item.test}}</view></view></view></block></view>
</scroll-view>
</view>
</view>- index.css
/**index.wxss**/
page{background: black
}
.body{padding: 20rpx;/* height: 100%; *//* background: #000000 */
}.nav{width:100%;height:50rpx;display:flex;flex-direction:row;}.red{line-height:50rpx;text-align:center;flex:1;/* border-right:1px solid gainsboro; */font-weight:bold;font-size:35rpx;color: transparent;background-clip: text;
background: linear-gradient(to right, #1ae8c8, #4a8aff);
-webkit-background-clip: text;}.default{line-height:50rpx;text-align:center;flex:1;color:#ffffff;/* border-right:1px solid gainsboro; */font-weight:bold;font-size: 35rpx;}.show{display:block;text-align:center;}
.hidden{display:none;text-align:center;line-height:200px;}.container1 {top: 0;bottom: 0;left: 0;right: 0;display: flex;flex-direction: column;align-items: center;justify-content: space-between;box-sizing: border-box;margin-left: 10rpx;margin-right: 10rpx;} ec-canvas {width: 100%;height: 650rpx;border-width: 4rpx 4rpx 4rpx 4rpx;border-color: rgb(71, 137, 235);border-style: solid;
}.scrollClass {display: flex;width: 100%;white-space: nowrap;height: 650rpx;border-width: 4rpx 4rpx 4rpx 4rpx;border-color: rgb(71, 137, 235);border-style: solid;margin-bottom: 50rpx;}
.table{display: inline-flex;flex-direction: column;border: 1rpx solid rgba(218, 217, 217, 1);border-bottom: 0; }
.table_header {display: inline-flex;
}.th0 {display: flex;flex-direction: column;width: 300rpx;height: 60rpx;background: #181818;border-right: 1rpx solid rgba(218, 217, 217, 1); border-bottom: 1rpx solid rgba(218, 217, 217, 1); justify-content: center;align-items: center;overflow-x: auto;
}
.th1 {display: flex;flex-direction: column;width: 145rpx;height: 60rpx;background: #181818;border-right: 1rpx solid rgba(218, 217, 217, 1); border-bottom: 1rpx solid rgba(218, 217, 217, 1); justify-content: center;align-items: center;overflow-x: auto;
}
.cell_label{font-size: 26rpx;color: #1ae8c8;
}
.table_main {display: inline-flex;flex-direction: row;
}.td0 {display: flex;flex-direction: column;width:300rpx;/* height: 90rpx; */background: #282828;justify-content: center;align-items: center;border: 1rpx solid rgba(218, 217, 217, 1);border-top: 0;border-left:0;
}
.td1{display: flex;flex-direction: column;width: 145rpx;/* height: 90rpx; */background: #282828;justify-content: center;align-items: center;border: 1rpx solid rgba(218, 217, 217, 1);border-top: 0;border-left:0; color: #FFFF00;
}.borderline{border-top:2px solid rgb(81, 99, 105);margin-left: 20rpx;margin-right: 20rpx}
- index.js
//index.js
//获取应用实例
const app = getApp()
import * as echarts from '../../ec-canvas/echarts';// K线图所用颜色
var upColor = '#fdbc07';
var upBorderColor = '#8A0000';
var downColor = '#00da3c';
var downBorderColor = '#008F28';// 表格数据
var sch_listData = [{ time: "20190328", number: 100, price:234,sum: 4.59, one: 108, test: 'buy'}, { time: "20190328", number: 100, price:234,sum: 4.59, one: 108, test: 'buy'}, { time: "20190328", number: 100, price:234,sum: 4.59, one: 108, test: 'buy'},{ time: "20190328", number: 100, price:234,sum: 4.59, one: 108, test: 'buy'},{ time: "20190328", number: 100, price:234,sum: 4.59, one: 108, test: 'buy'}, { time: "20190328", number: 100, price:234,sum: 4.59, one: 108, test: 'buy'}, { time: "20190328", number: 100, price:234,sum: 4.59, one: 108, test: 'buy'}, { time: "20190328", number: 100, price:234,sum: 4.59, one: 108, test: 'buy'}, { time: "20190328", number: 100, price:234,sum: 4.59, one: 108, test: 'buy'}, { time: "20190328", number: 100, price:234,sum: 4.59, one: 108, test: 'buy'}, { time: "20190328", number: 100, price:234,sum: 4.59, one: 108, test: 'buy'}, { time: "20190328", number: 100, price:234,sum: 4.59, one: 108, test: 'buy'}, { time: "20190328", number: 100, price:234,sum: 4.59, one: 108, test: 'buy'}, { time: "20190328", number: 100, price:234,sum: 4.59, one: 108, test: 'buy'}, { time: "20190328", number: 100, price:234,sum: 4.59, one: 108, test: 'buy'}, { time: "20190328", number: 100, price:234,sum: 4.59, one: 108, test: 'buy'}, { time: "20190328", number: 100, price:234,sum: 4.59, one: 108, test: 'buy'}, { time: "20190328", number: 100, price:234,sum: 4.59, one: 108, test: 'buy'}, { time: "20190328", number: 100, price:234,sum: 4.59, one: 108, test: 'buy'}, { time: "20190328", number: 100, price:234,sum: 4.59, one: 108, test: 'buy'}, { time: "20190328", number: 100, price:234,sum: 4.59, one: 108, test: 'buy'}
]// 数据意义：开盘(open)，收盘(close)，最低(lowest)，最高(highest)
var data0 = splitData([['2013/1/24', 2320.26, 2320.26, 2287.3, 2362.94],['2013/1/25', 2300, 2291.3, 2288.26, 2308.38],['2013/1/28', 2295.35, 2346.5, 2295.35, 2346.92],['2013/1/29', 2347.22, 2358.98, 2337.35, 2363.8],['2013/1/30', 2360.75, 2382.48, 2347.89, 2383.76],['2013/1/31', 2383.43, 2385.42, 2371.23, 2391.82],['2013/2/1', 2377.41, 2419.02, 2369.57, 2421.15],['2013/2/4', 2425.92, 2428.15, 2417.58, 2440.38],['2013/2/5', 2411, 2433.13, 2403.3, 2437.42],['2013/2/6', 2432.68, 2434.48, 2427.7, 2441.73],['2013/2/7', 2430.69, 2418.53, 2394.22, 2433.89],['2013/2/8', 2416.62, 2432.4, 2414.4, 2443.03],['2013/2/18', 2441.91, 2421.56, 2415.43, 2444.8],['2013/2/19', 2420.26, 2382.91, 2373.53, 2427.07],['2013/2/20', 2383.49, 2397.18, 2370.61, 2397.94],['2013/2/21', 2378.82, 2325.95, 2309.17, 2378.82],['2013/2/22', 2322.94, 2314.16, 2308.76, 2330.88],['2013/2/25', 2320.62, 2325.82, 2315.01, 2338.78],['2013/2/26', 2313.74, 2293.34, 2289.89, 2340.71],['2013/2/27', 2297.77, 2313.22, 2292.03, 2324.63],['2013/2/28', 2322.32, 2365.59, 2308.92, 2366.16],['2013/3/1', 2364.54, 2359.51, 2330.86, 2369.65],['2013/3/4', 2332.08, 2273.4, 2259.25, 2333.54],['2013/3/5', 2274.81, 2326.31, 2270.1, 2328.14],['2013/3/6', 2333.61, 2347.18, 2321.6, 2351.44],['2013/3/7', 2340.44, 2324.29, 2304.27, 2352.02],['2013/3/8', 2326.42, 2318.61, 2314.59, 2333.67],['2013/3/11', 2314.68, 2310.59, 2296.58, 2320.96],['2013/3/12', 2309.16, 2286.6, 2264.83, 2333.29],['2013/3/13', 2282.17, 2263.97, 2253.25, 2286.33],['2013/3/14', 2255.77, 2270.28, 2253.31, 2276.22],['2013/3/15', 2269.31, 2278.4, 2250, 2312.08],['2013/3/18', 2267.29, 2240.02, 2239.21, 2276.05],['2013/3/19', 2244.26, 2257.43, 2232.02, 2261.31],['2013/3/20', 2257.74, 2317.37, 2257.42, 2317.86],['2013/3/21', 2318.21, 2324.24, 2311.6, 2330.81],['2013/3/22', 2321.4, 2328.28, 2314.97, 2332],['2013/3/25', 2334.74, 2326.72, 2319.91, 2344.89],['2013/3/26', 2318.58, 2297.67, 2281.12, 2319.99],['2013/3/27', 2299.38, 2301.26, 2289, 2323.48],['2013/3/28', 2273.55, 2236.3, 2232.91, 2273.55],['2013/3/29', 2238.49, 2236.62, 2228.81, 2246.87],['2013/4/1', 2229.46, 2234.4, 2227.31, 2243.95],['2013/4/2', 2234.9, 2227.74, 2220.44, 2253.42],['2013/4/3', 2232.69, 2225.29, 2217.25, 2241.34],['2013/4/8', 2196.24, 2211.59, 2180.67, 2212.59],['2013/4/9', 2215.47, 2225.77, 2215.47, 2234.73],['2013/4/10', 2224.93, 2226.13, 2212.56, 2233.04],['2013/4/11', 2236.98, 2219.55, 2217.26, 2242.48],['2013/4/12', 2218.09, 2206.78, 2204.44, 2226.26],['2013/4/15', 2199.91, 2181.94, 2177.39, 2204.99],['2013/4/16', 2169.63, 2194.85, 2165.78, 2196.43],['2013/4/17', 2195.03, 2193.8, 2178.47, 2197.51],['2013/4/18', 2181.82, 2197.6, 2175.44, 2206.03],['2013/4/19', 2201.12, 2244.64, 2200.58, 2250.11],['2013/4/22', 2236.4, 2242.17, 2232.26, 2245.12],['2013/4/23', 2242.62, 2184.54, 2182.81, 2242.62],['2013/4/24', 2187.35, 2218.32, 2184.11, 2226.12],['2013/4/25', 2213.19, 2199.31, 2191.85, 2224.63],['2013/4/26', 2203.89, 2177.91, 2173.86, 2210.58],['2013/5/2', 2170.78, 2174.12, 2161.14, 2179.65],['2013/5/3', 2179.05, 2205.5, 2179.05, 2222.81],['2013/5/6', 2212.5, 2231.17, 2212.5, 2236.07],['2013/5/7', 2227.86, 2235.57, 2219.44, 2240.26],['2013/5/8', 2242.39, 2246.3, 2235.42, 2255.21],['2013/5/9', 2246.96, 2232.97, 2221.38, 2247.86],['2013/5/10', 2228.82, 2246.83, 2225.81, 2247.67],['2013/5/13', 2247.68, 2241.92, 2231.36, 2250.85],['2013/5/14', 2238.9, 2217.01, 2205.87, 2239.93],['2013/5/15', 2217.09, 2224.8, 2213.58, 2225.19],['2013/5/16', 2221.34, 2251.81, 2210.77, 2252.87],['2013/5/17', 2249.81, 2282.87, 2248.41, 2288.09],['2013/5/20', 2286.33, 2299.99, 2281.9, 2309.39],['2013/5/21', 2297.11, 2305.11, 2290.12, 2305.3],['2013/5/22', 2303.75, 2302.4, 2292.43, 2314.18],['2013/5/23', 2293.81, 2275.67, 2274.1, 2304.95],['2013/5/24', 2281.45, 2288.53, 2270.25, 2292.59],['2013/5/27', 2286.66, 2293.08, 2283.94, 2301.7],['2013/5/28', 2293.4, 2321.32, 2281.47, 2322.1],['2013/5/29', 2323.54, 2324.02, 2321.17, 2334.33],['2013/5/30', 2316.25, 2317.75, 2310.49, 2325.72],['2013/5/31', 2320.74, 2300.59, 2299.37, 2325.53],['2013/6/3', 2300.21, 2299.25, 2294.11, 2313.43],['2013/6/4', 2297.1, 2272.42, 2264.76, 2297.1],['2013/6/5', 2270.71, 2270.93, 2260.87, 2276.86],['2013/6/6', 2264.43, 2242.11, 2240.07, 2266.69],['2013/6/7', 2242.26, 2210.9, 2205.07, 2250.63],['2013/6/13', 2190.1, 2148.35, 2126.22, 2190.1]
]);// 用于形成data0
function splitData(rawData) {var categoryData = [];var values = []for (var i = 0; i < rawData.length; i++) {categoryData.push(rawData[i].splice(0, 1)[0]);values.push(rawData[i])}return {categoryData: categoryData,values: values};
}// 用于生成K线图中附加的曲线
function calculateMA(dayCount) {var result = [];for (var i = 0, len = data0.values.length; i < len; i++) {if (i < dayCount) {result.push('-');continue;}var sum = 0;for (var j = 0; j < dayCount; j++) {sum += data0.values[i - j][1];}result.push(sum / dayCount);}return result;
}// 椭圆形标识参数
var val = [{name: 'XX标点',coord: ['2013/5/31', 2300],value: 2300,itemStyle: {normal: { color: '#4a8aff' }}},{name: 'highest value',type: 'max',valueDim: 'highest'},{name: 'lowest value',type: 'min',valueDim: 'lowest'},{name: 'average value on close',type: 'average',valueDim: 'close'}
]Page({data: {// 用于表格sch_listData:sch_listData,indexArray: ['time', 'number', 'price', 'sum', 'one', 'test'],//tab切换selected: true,selected1: false,hidden: true,//k线图绘制初始化ec: '',},onLoad: function () {this.setData({// k线图ec: {onInit: this.initChart}})},
//k线图与数据表格切换selected: function (e) {this.setData({selected1: false,selected: true})},selected1: function (e) {this.setData({selected: false,selected1: true})},// 绘制k线initChart: function (canvas, width, height) {const chart = echarts.init(canvas, null, {width: width,height: height});canvas.setChart(chart);var option = {backgroundColor: '#0F2127',tooltip: {trigger: 'axis',axisPointer: {type: 'cross'},// 鼠标点击时触发triggerOn: 'click',backgroundColor: 'rgba(245, 245, 245, 0.8)',borderWidth: 1,borderColor: '#ccc',padding: 10,textStyle: {color: '#000',// fontSize: 13,},// 避免提示框超出方块圈的情况position: function (pos, params, el, elRect, size) {var obj = { top: 10 };obj[['left', 'right'][+(pos[0] < size.viewSize[0] / 2)]] = 30;return obj;},},legend: {data: ['日K', 'MA5', 'MA10', 'MA20', 'MA30']},grid: {left: '13%',},xAxis: {axisLabel: {show: true,textStyle: {color: '#fff',// fontSize: 13,}},type: 'category',data: data0.categoryData,scale: true,axisTick: { show: false },axisLine: { onZero: false },splitLine: { show: false },splitNumber: 20,min: 'dataMin',max: 'dataMax'},yAxis: {splitLine: { show: false },//去除网格线axisLabel: {textStyle: {color: '#fff',// fontSize: 13}},// axisTick: { show: false },scale: true,},dataZoom: [{type: 'slider',height: 10,show: true,start: 80,end: 100,handleSize: 8},{type: 'inside',start: 80,end: 100},],series: [{name: '日K',type: 'candlestick',data: data0.values,itemStyle: {normal: {color: upColor,color0: downColor,borderColor: upBorderColor,borderColor0: downBorderColor}},markPoint: {label: {normal: {formatter: function (param) {return param != null ? Math.round(param.value) : '';}}},data: val,tooltip: {formatter: function (param) {return param.name + '<br>' + (param.data.coord || '');}}},markLine: {symbol: ['none', 'none'],data: [[{name: 'from lowest to highest',type: 'min',valueDim: 'lowest',symbol: 'circle',symbolSize: 10,label: {normal: { show: false },emphasis: { show: false }}},{type: 'max',valueDim: 'highest',symbol: 'circle',symbolSize: 10,label: {normal: { show: false },emphasis: { show: false }}}],{name: 'min line on close',type: 'min',valueDim: 'close'},{name: 'max line on close',type: 'max',valueDim: 'close'}]}},{name: 'MA5',type: 'line',data: calculateMA(5),smooth: true,lineStyle: {normal: { opacity: 0.5 }}},{name: 'MA10',type: 'line',data: calculateMA(10),smooth: true,lineStyle: {normal: { opacity: 0.5 }}},{name: 'MA20',type: 'line',data: calculateMA(20),smooth: true,lineStyle: {normal: { opacity: 0.5 }}},{name: 'MA30',type: 'line',data: calculateMA(30),smooth: true,lineStyle: {normal: { opacity: 0.5 }}},]};chart.setOption(option);return chart;},
})- 效果图
将以上代码整合最终效果图
源码地址
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