<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>
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