分组条形图（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 = [
                { label: 'Mon.', type: 'series1', value: 2800 },
                { label: 'Mon.', type: 'series2', value: 2260 },
                { label: 'Tue.', type: 'series1', value: 1800 },
                { label: 'Tue.', type: 'series2', value: 1300 },
                { label: 'Wed.', type: 'series1', value: 950 },
                { label: 'Wed.', type: 'series2', value: 900 },
                { label: 'Thu.', type: 'series1', value: 500 },
                { label: 'Thu.', type: 'series2', value: 390 },
                { label: 'Fri.', type: 'series1', value: 170 },
                { label: 'Fri.', type: 'series2', value: 100 }
            ];
            let chart = new LightChart.Chart({
                ltCanvas:this.$refs.canvas
            });

            chart.source(data.reverse(), {
                value: {
                tickInterval: 750
                }
            });
            chart.coord({
                transposed: true
            });
            chart.axis('label', {
                line: LightChart.Global._defaultAxis.line,
                grid: null
            });
            chart.axis('value', {
                line: null,
                grid: LightChart.Global._defaultAxis.grid,
                label(text, index, total) {
                const textCfg = {};
                if (index === 0) {
                    textCfg.textAlign = 'left';
                }
                if (index === total - 1) {
                    textCfg.textAlign = 'right';
                }
                return textCfg;
                }
            });
            chart.interval().position('label*value').color('type').adjust({
                type: 'dodge',
                marginRatio: 1 / 32
            });
            chart.render();
        }
    }
</script>
<style scoped>

</style>