wx-charts：基于canvas绘制：饼图，线图，柱状图（适用1122）
微信小程序图表工具，charts for WeChat small app
基于canvas绘制，体积小巧
持续优化更新中，请保持关注~
支持图表类型
- 饼图 pie
- 圆环图 ring
- 线图 line
- 柱状图 column
- 区域图 area
代码分析 Here
如何使用1、直接引用编译好的文件 dist/charts.js
2、自行编译
git clone github.com/xiaolin3303/wx-charts.git
npm install rollup -g
npm install
rollup -c 或者 rollup --config rollup.config.prod.js
参数说明
opts Object
opts.canvasId String required 微信小程序canvas-id
opts.width Number required canvas宽度，单位为px
opts.height Number required canvas高度，单位为px
opts.animation Boolean default true 是否动画展示
opts.type String required 图表类型，可选值为pie, line, column, area, ring
opts.categories Array required (饼图不需要) 数据类别分类
opts.dataLabel Boolean default true 是否在图表中显示数据内容值
opts.yAxis Object Y轴配置
opts.yAxis.format Function 自定义Y轴文案显示
opts.yAxis.min Number Y轴起始值
opts.yAxis.title String Y轴title
opts.series Array required 数据列表
数据列表每项结构定义
dataItem Object
dataItem.data Array required (饼图为Number) 数据
dataItem.color String 例如#7cb5ec 不传入则使用系统默认配色方案
dataItem.name String 数据名称
dateItem.format Function 自定义显示数据内容
Example pie chartvar Charts = require('charts.js');
new Charts({
canvasId: 'pieCanvas',
type: 'pie',
series: [{
name: '成交量1',
data: 15,
}, {
name: '成交量2',
data: 35,
}, {
name: '成交量3',
data: 78,
}, {
name: '成交量4',
data: 63,
}],
width: 320,
height: 200,
dataLabel: false
});
ring chart
new Charts({
canvasId: 'pieCanvas',
type: 'ring',
series: [{
name: '成交量1',
data: 15,
}, {
name: '成交量2',
data: 35,
}, {
name: '成交量3',
data: 78,
}, {
name: '成交量4',
data: 63,
}],
width: 320,
height: 200,
dataLabel: false
});
line chart
new Charts({
canvasId: 'lineCanvas',
type: 'line',
categories: ['2012', '2013', '2014', '2015', '2016', '2017'],
series: [{
name: '成交量1',
data: [0.15, 0.2, 0.45, 0.37, 0.4, 0.8],
format: function (val) {
return val.toFixed(2) + '万';
}
}, {
name: '成交量2',
data: [0.30, 0.37, 0.65, 0.78, 0.69, 0.94],
format: function (val) {
return val.toFixed(2) + '万';
}
}],
yAxis: {
title: '成交金额 (万元)',
format: function (val) {
return val.toFixed(2);
},
min: 0
},
width: 320,
height: 200
});
columnChart
new Charts({
canvasId: 'columnCanvas',
type: 'column',
categories: ['2012', '2013', '2014', '2015', '2016', '2017'],
series: [{
name: '成交量1',
data: [15, 20, 45, 37, 4, 80]
}, {
name: '成交量2',
data: [70, 40, 65, 100, 34, 18]
}],
yAxis: {
format: function (val) {
return val + '万';
}
},
width: 320,
height: 200
});
areaChart
new Charts({
canvasId: 'areaCanvas',
type: 'area',
categories: ['2016-08', '2016-09', '2016-10', '2016-11', '2016-12', '2017'],
series: [{
name: '成交量1',
data: [70, 40, 65, 100, 34, 18],
format: function (val) {
return val.toFixed(2) + '万';
}
}, {
name: '成交量2',
data: [15, 20, 45, 37, 4, 80],
format: function (val) {
return val.toFixed(2) + '万';
}
}],
yAxis: {
format: function (val) {
return val + '万';
}
},
width: 320,
height: 200
});
项目地址及下载：
