import *
as echarts
from
‘../../ec-canvas/echarts‘;
var Chart=
null;
const app = getApp();
Page({
data: {
ec: {
onInit:
function (canvas, width, height) {
chart = echarts.init(canvas,
null, {
width: width,
height: height
});
canvas.setChart(chart);
return chart;
},
lazyLoad:
true
// 延迟加载
},
},
onLoad:
function (options) {
this.echartsComponnet =
this.selectComponent(
‘#mychart‘);
//如果是第一次绘制
if (!Chart) {
this.init_echarts();
//初始化图表
}
else {
this.setOption(Chart);
//更新数据
}
},
onReady() {
},
//初始化图表
init_echarts:
function () {
this.echartsComponnet.init((canvas, width, height) => {
// 初始化图表
const Chart = echarts.init(canvas,
null, {
width: width,
height: height
});
this.setOption(Chart)
// 注意这里一定要返回 chart 实例，否则会影响事件处理等
return Chart;
});
},
setOption:
function (Chart) {
Chart.clear();
// 清除
Chart.setOption(
this.getOption());
//获取新数据
},
// 图表配置项
getOption() {
var self =
this;
var option = {
title: {
//标题
text:
‘折线图‘,
left:
‘center‘
},
renderAsImage:
true,
//支持渲染为图片模式
color: [
"#FFC34F",
"#FF6D60",
"#44B2FB"],
//图例图标颜色
legend: {
show:
true,
itemGap:
25,
//每个图例间的间隔
top:
30,
x:
30,
//水平安放位置,离容器左侧的距离 ‘left‘
z:
100,
textStyle: {
color:
‘#383838‘
},
data: [
//图例具体内容
{
name:
‘财运‘,
//图例名字
textStyle: {
//图例文本样式
fontSize:
13,
color:
‘#383838‘
},
icon:
‘roundRect‘
//图例项的 icon，可以是图片
},
{
name:
‘感情‘,
textStyle: {
fontSize:
13,
color:
‘#383838‘
},
icon:
‘roundRect‘
},
{
name:
‘事业‘,
textStyle: {
fontSize:
13,
color:
‘#383838‘
},
icon:
‘roundRect‘
}
]
},
grid: {
//网格
left:
30,
top:
100,
containLabel:
true,
//grid 区域是否包含坐标轴的刻度标签
},
xAxis: {
//横坐标
type:
‘category‘,
name:
‘日期‘,
//横坐标名称
nameTextStyle: {
//在name值存在下，设置name的样式
color:
‘red‘,
fontStyle:
‘normal‘
},
nameLocation:
‘end‘,
splitLine: {
//坐标轴在 grid 区域中的分隔线。
show:
true,
lineStyle: {
type:
‘dashed‘
}
},
boundaryGap:
false,
//1.true 数据点在2个刻度直接 2.fals 数据点在分割线上，即刻度值上
data: [
‘周一‘,
‘周二‘,
‘周三‘,
‘周四‘,
‘周五‘,
‘周六‘,
‘周日‘],
axisLabel: {
textStyle: {
fontSize:
13,
color:
‘#5D5D5D‘
}
}
},
yAxis: {
//纵坐标
type:
‘value‘,
position:
‘left‘,
name:
‘运势‘,
//纵坐标名称
nameTextStyle:{
//在name值存在下，设置name的样式
color:
‘red‘,
fontStyle:
‘normal‘
},
splitNumber:
5,
//坐标轴的分割段数
splitLine: {
//坐标轴在 grid 区域中的分隔线。
show:
true,
lineStyle: {
type:
‘dashed‘
}
},
axisLabel: {
//坐标轴刻度标签
formatter:
function (value) {
var xLable = [];
if (value ==
20) {
xLable.push(
‘大凶‘);
}
if (value ==
40) {
xLable.push(
‘凶‘);
}
if (value ==
60) {
xLable.push(
‘平淡‘);
}
if (value ==
80) {
xLable.push(
‘小吉‘);
}
if (value ==
100) {
xLable.push(
‘大吉‘);
}
return xLable
},
textStyle: {
fontSize:
13,
color:
‘#5D5D5D‘,
}
},
min:
0,
max:
100,
},
series: [{
name:
‘财运‘,
type:
‘line‘,
data: [
18,
36,
65,
30,
78,
40,
33],
symbol:
‘none‘,
itemStyle: {
normal: {
lineStyle: {
color:
‘#FFC34F‘
}
}
}
}, {
name:
‘感情‘,
type:
‘line‘,
data: [
12,
50,
51,
35,
70,
30,
20],
// data: ["80", "20", "50", "70", "80", "60", "70"],
symbol:
‘none‘,
itemStyle: {
normal: {
lineStyle: {
color:
‘#FF6D60‘
}
}
}
}, {
name:
‘事业‘,
type:
‘line‘,
data: [
10,
30,
31,
50,
40,
20,
10],
// data: ["50", "30", "40", "70", "90", "30", "20"],
symbol:
‘none‘,
itemStyle: {
normal: {
lineStyle: {
color:
‘#44B2FB‘
}
}
}
}],
}
return option;
},
});
