Echarts分段折线图图例样式visualMap颜色修改

textStyle: { //图例文字的样式
                            color: '#fff',
                            fontSize: 16
},


    
        
        
        
        
    
    
        
        

json数据
格式是数组对象的时候

{
    "echatX": ["2020-11-17 14:47:18", "2020-11-17 14:49:44", "2020-11-17 14:52:11", "2020-11-17 14:54:36",
        "2020-11-17 14:57:01", "2020-11-17 14:59:28", "2020-11-17 15:01:55", "2020-11-17 15:04:23", "2020-11-17 15:06:51",
        "2020-11-17 15:09:20", "2020-11-17 15:11:44", "2020-11-17 15:14:10", "2020-11-17 15:16:38", "2020-11-17 15:19:01",
        "2020-11-17 15:21:26", "2020-11-17 15:23:53", "2020-11-17 15:26:20", "2020-11-17 15:28:47", "2020-11-17 15:31:14",
        "2020-11-17 15:33:41", "2020-11-17 15:36:09", "2020-11-17 15:38:38", "2020-11-17 15:41:07", "2020-11-17 15:43:35",
        "2020-11-17 15:46:01", "2020-11-17 15:48:25", "2020-11-17 15:50:52", "2020-11-17 15:53:20", "2020-11-17 15:55:55",
        "2020-11-17 15:58:35", "2020-11-17 16:01:04", "2020-11-17 16:01:19", "2020-11-17 16:03:49", "2020-11-17 16:04:05",
        "2020-11-17 16:06:34", "2020-11-17 16:06:50", "2020-11-17 16:09:17", "2020-11-17 16:09:32", "2020-11-17 16:11:56",
        "2020-11-17 16:12:13", "2020-11-17 16:14:38", "2020-11-17 16:14:54", "2020-11-17 16:17:20", "2020-11-17 16:17:37",
        "2020-11-17 16:20:02", "2020-11-17 16:20:18", "2020-11-17 16:22:51", "2020-11-17 16:23:10", "2020-11-17 16:25:43",
        "2020-11-17 16:26:00", "2020-11-17 16:28:26", "2020-11-17 16:28:43", "2020-11-17 16:31:07", "2020-11-17 16:31:24",
        "2020-11-17 16:33:58", "2020-11-17 16:34:17"
    ],
    "echatY": [1, 1, 1, 1, 1, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
        3, 2, 2, 2, 2, 2, 2, 4, 4, 4, 4, 4, 4, 3, 3, 4, 4, 4, 4
    ],
    "echatY2": null
}

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