Echarts - 更改图表图例（legend）自定义颜色（并与数据段颜色对应）

秒速五厘米 2023-01-16 09:46 461阅读 0赞

## 前言 ##

> 示例来自 Echarts 官网：[https://echarts.apache.org/examples/zh/editor.html?c=line-stack][https_echarts.apache.org_examples_zh_editor.html_c_line-stack]

如下图所示，这是默认图例的颜色，我们接下来进行更改。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDE5ODk2NQ_size_16_color_FFFFFF_t_70]

## 实现代码 ##

主要是 `color` 调色盘的配置，具体可看文档。

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDE5ODk2NQ_size_16_color_FFFFFF_t_70 1]

option = { 
        title: { 
            text: ''
        },
        tooltip: { 
            trigger: 'axis'
        },
        
        
        // 更改图例默认颜色(依次应用)
        color:['red', 'black', 'yellow', 'pink', 'cyan'],
        // end
    
        
        legend: { 
            data: ['邮件营销', '联盟广告', '视频广告', '直接访问', '搜索引擎']
        },
        grid: { 
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
        },
        toolbox: { 
            feature: { 
                saveAsImage: { }
            }
        },
        xAxis: { 
            type: 'category',
            boundaryGap: false,
            data: ['周一', '周二', '周三', '周四', '周五', '周六', '周日']
        },
        yAxis: { 
            type: 'value'
        },
        series: [
            { 
                name: '邮件营销',
                type: 'line',
                stack: '总量',
                data: [120, 132, 101, 134, 90, 230, 210]
            },
            { 
                name: '联盟广告',
                type: 'line',
                stack: '总量',
                data: [220, 182, 191, 234, 290, 330, 310]
            },
            { 
                name: '视频广告',
                type: 'line',
                stack: '总量',
                data: [150, 232, 201, 154, 190, 330, 410]
            },
            { 
                name: '直接访问',
                type: 'line',
                stack: '总量',
                data: [320, 332, 301, 334, 390, 330, 320]
            },
            { 
                name: '搜索引擎',
                type: 'line',
                stack: '总量',
                data: [820, 932, 901, 934, 1290, 1330, 1320]
            }
        ]
    };

## 效果 ##

完成。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDE5ODk2NQ_size_16_color_FFFFFF_t_70 2]

[https_echarts.apache.org_examples_zh_editor.html_c_line-stack]: https://echarts.apache.org/examples/zh/editor.html?c=line-stack
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDE5ODk2NQ_size_16_color_FFFFFF_t_70]: /images/20221022/dcb047eceefc4f50b34e801d1a4f10c6.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDE5ODk2NQ_size_16_color_FFFFFF_t_70 1]: /images/20221022/de9cb1566e744317a4cd64b303596fd9.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDE5ODk2NQ_size_16_color_FFFFFF_t_70 2]: /images/20221022/a6bb92590f27457892d9d795aca03d4b.png