多条折线(带图例)

效果

使用方法


<template>
<div>
<lt-canvas ref="canvas" :width="750" :height="500"></lt-canvas>
</div>
</template>
<script>
import LightChart from 'light-chart';
export default {
components:{
ltCanvas:require("light-chart/canvas")
},
data(){
return {}
},
mounted(){
const data = [
{ value: 63.4, city: 'New York', date: '2011-10-01' },
{ value: 62.7, city: 'San Francisco', date: '2011-10-01' },
{ value: 72.2, city: 'Austin', date: '2011-10-01' },
{ value: 58, city: 'New York', date: '2011-10-02' },
{ value: 59.9, city: 'San Francisco', date: '2011-10-02' },
{ value: 67.7, city: 'Austin', date: '2011-10-02' },
{ value: 53.3, city: 'New York', date: '2011-10-03' },
{ value: 59.1, city: 'San Francisco', date: '2011-10-03' },
{ value: 69.4, city: 'Austin', date: '2011-10-03' },
{ value: 55.7, city: 'New York', date: '2011-10-04' },
{ value: 58.8, city: 'San Francisco', date: '2011-10-04' },
{ value: 68, city: 'Austin', date: '2011-10-04' },
{ value: 64.2, city: 'New York', date: '2011-10-05' },
{ value: 58.7, city: 'San Francisco', date: '2011-10-05' },
{ value: 72.4, city: 'Austin', date: '2011-10-05' },
{ value: 58.8, city: 'New York', date: '2011-10-06' },
{ value: 57, city: 'San Francisco', date: '2011-10-06' },
{ value: 77, city: 'Austin', date: '2011-10-06' },
{ value: 57.9, city: 'New York', date: '2011-10-07' },
{ value: 56.7, city: 'San Francisco', date: '2011-10-07' },
{ value: 82.3, city: 'Austin', date: '2011-10-07' },
{ value: 61.8, city: 'New York', date: '2011-10-08' },
{ value: 56.8, city: 'San Francisco', date: '2011-10-08' },
{ value: 78.9, city: 'Austin', date: '2011-10-08' },
{ value: 69.3, city: 'New York', date: '2011-10-09' },
{ value: 56.7, city: 'San Francisco', date: '2011-10-09' },
{ value: 68.8, city: 'Austin', date: '2011-10-09' },
{ value: 71.2, city: 'New York', date: '2011-10-10' },
{ value: 60.1, city: 'San Francisco', date: '2011-10-10' },
{ value: 68.7, city: 'Austin', date: '2011-10-10' },
{ value: 68.7, city: 'New York', date: '2011-10-11' },
{ value: 61.1, city: 'San Francisco', date: '2011-10-11' },
{ value: 70.3, city: 'Austin', date: '2011-10-11' },
{ value: 61.8, city: 'New York', date: '2011-10-12' },
{ value: 61.5, city: 'San Francisco', date: '2011-10-12' },
{ value: 75.3, city: 'Austin', date: '2011-10-12' },
{ value: 63, city: 'New York', date: '2011-10-13' },
{ value: 64.3, city: 'San Francisco', date: '2011-10-13' },
{ value: 76.6, city: 'Austin', date: '2011-10-13' },
{ value: 66.9, city: 'New York', date: '2011-10-14' },
{ value: 67.1, city: 'San Francisco', date: '2011-10-14' },
{ value: 66.6, city: 'Austin', date: '2011-10-14' },
{ value: 61.7, city: 'New York', date: '2011-10-15' },
{ value: 64.6, city: 'San Francisco', date: '2011-10-15' },
{ value: 68, city: 'Austin', date: '2011-10-15' },
{ value: 61.8, city: 'New York', date: '2011-10-16' },
{ value: 61.6, city: 'San Francisco', date: '2011-10-16' },
{ value: 70.6, city: 'Austin', date: '2011-10-16' },
{ value: 62.8, city: 'New York', date: '2011-10-17' },
{ value: 61.1, city: 'San Francisco', date: '2011-10-17' },
{ value: 71.1, city: 'Austin', date: '2011-10-17' },
{ value: 60.8, city: 'New York', date: '2011-10-18' },
{ value: 59.2, city: 'San Francisco', date: '2011-10-18' },
{ value: 70, city: 'Austin', date: '2011-10-18' },
{ value: 62.1, city: 'New York', date: '2011-10-19' },
{ value: 58.9, city: 'San Francisco', date: '2011-10-19' },
{ value: 61.6, city: 'Austin', date: '2011-10-19' },
{ value: 65.1, city: 'New York', date: '2011-10-20' },
{ value: 57.2, city: 'San Francisco', date: '2011-10-20' },
{ value: 57.4, city: 'Austin', date: '2011-10-20' },
{ value: 55.6, city: 'New York', date: '2011-10-21' },
{ value: 56.4, city: 'San Francisco', date: '2011-10-21' },
{ value: 64.3, city: 'Austin', date: '2011-10-21' },
{ value: 54.4, city: 'New York', date: '2011-10-22' },
{ value: 60.7, city: 'San Francisco', date: '2011-10-22' },
{ value: 72.4, city: 'Austin', date: '2011-10-22' },
{ value: 54.4, city: 'New York', date: '2011-10-23' },
{ value: 65.1, city: 'San Francisco', date: '2011-10-23' },
{ value: 72.4, city: 'Austin', date: '2011-10-23' },
{ value: 54.8, city: 'New York', date: '2011-10-24' },
{ value: 60.9, city: 'San Francisco', date: '2011-10-24' },
{ value: 72.5, city: 'Austin', date: '2011-10-24' },
{ value: 57.9, city: 'New York', date: '2011-10-25' },
{ value: 56.1, city: 'San Francisco', date: '2011-10-25' },
{ value: 72.7, city: 'Austin', date: '2011-10-25' },
{ value: 54.6, city: 'New York', date: '2011-10-26' },
{ value: 54.6, city: 'San Francisco', date: '2011-10-26' },
{ value: 73.4, city: 'Austin', date: '2011-10-26' },
{ value: 54.4, city: 'New York', date: '2011-10-27' },
{ value: 56.1, city: 'San Francisco', date: '2011-10-27' },
{ value: 70.7, city: 'Austin', date: '2011-10-27' },
{ value: 42.5, city: 'New York', date: '2011-10-28' },
{ value: 58.1, city: 'San Francisco', date: '2011-10-28' },
{ value: 56.8, city: 'Austin', date: '2011-10-28' },
{ value: 40.9, city: 'New York', date: '2011-10-29' },
{ value: 57.5, city: 'San Francisco', date: '2011-10-29' },
{ value: 51, city: 'Austin', date: '2011-10-29' },
{ value: 38.6, city: 'New York', date: '2011-10-30' },
{ value: 57.7, city: 'San Francisco', date: '2011-10-30' },
{ value: 54.9, city: 'Austin', date: '2011-10-30' },
{ value: 44.2, city: 'New York', date: '2011-10-31' },
{ value: 55.1, city: 'San Francisco', date: '2011-10-31' },
{ value: 58.8, city: 'Austin', date: '2011-10-31' },
{ value: 49.6, city: 'New York', date: '2011-11-01' },
{ value: 57.9, city: 'San Francisco', date: '2011-11-01' },
{ value: 62.6, city: 'Austin', date: '2011-11-01' },
{ value: 47.2, city: 'New York', date: '2011-11-02' },
{ value: 64.6, city: 'San Francisco', date: '2011-11-02' },
{ value: 71, city: 'Austin', date: '2011-11-02' },
{ value: 50.1, city: 'New York', date: '2011-11-03' }
];
let chart = new LightChart.Chart({
ltCanvas:this.$refs.canvas
});

chart.source(data, {
date: {
range: [ 0, 1 ],
type: 'timeCat',
mask: 'MM-DD'
},
value: {
tickCount: 5
}
});
chart.axis('date', {
label(text, index, total) {
const textCfg = {};
if (index === 0) {
textCfg.textAlign = 'left';
}
if (index === total - 1) {
textCfg.textAlign = 'right';
}
return textCfg;
}
});
chart.line().position('date*value').color('city');
chart.render();
}

}
</script>
<style scoped>

</style>