自定义序列有的 Item 没有渲染

描述:当前是关于Echarts图表中的 示例。
 
            const LINE_STYLE = {fill: null, stroke: '#da9be8', lineWidth: 2};
const DOT_LINE_STYLE = {lineDash: [3, 3], lineWidth: 2, opacity: .8};
const EMPPHASIS_STYLE = {lineWidth: 3, opacity: 1};

function buildLine({value, itemStyle:{normal, emphasis = {}}}, api) {
    const [x1, y1] = api.coord([value[0], value[1]]);
    const [x2, y2] = api.coord([value[2], value[3]]);

    let {color, borderColor, borderWidth} = normal;
    const style = api.style({fill: color, stroke: borderColor, lineWidth: borderWidth, ...DOT_LINE_STYLE});

    let {color: fill, borderColor: stroke, borderWidth: lineWidth} = emphasis;
    const styleEmphasis = api.styleEmphasis({fill, stroke, lineWidth, lineDash: [3, 3], ...EMPPHASIS_STYLE});

    return {
        type: 'line',
        shape: {
            x1, y1, x2, y2
        },
        style,
        styleEmphasis
    };
}

option = {
    "series": [
        {
            "name": "SYMBOL",
            "barWidth": "62.5%",
            "barMinWidth": 10,
            "barMaxWidth": 20,
            "itemStyle": {
                "normal": {
                    "color": "#6ba583",
                    "color0": "#d75442",
                    "borderColor": "#225437",
                    "borderColor0": "#5b1a13",
                    "borderWidth": 1,
                    "shadowBlur": 0,
                    "shadowColor": "transparent",
                    "shadowOffsetX": 0,
                    "shadowOffsetY": 0
                }
            },
            "lineStyle": false,
            "areaStyle": false,
            "data": [
                [
                    48.95,
                    48.85,
                    48.75,
                    48.95
                ],
                [
                    48.76,
                    48.77,
                    48.65,
                    48.81
                ],
                [
                    48.77,
                    48.87,
                    48.69,
                    48.87
                ],
                [
                    49.02,
                    49.08,
                    48.9,
                    49.13
                ],
                [
                    49.11,
                    48.9,
                    48.86,
                    49.14
                ],
                [
                    48.97,
                    48.71,
                    48.46,
                    48.98
                ],
                [
                    48.55,
                    48.61,
                    48.48,
                    48.65
                ],
                [
                    48.68,
                    48.56,
                    48.44,
                    48.7
                ],
                [
                    48.73,
                    48.65,
                    48.5,
                    48.73
                ],
                [
                    48.61,
                    48.41,
                    48.19,
                    48.64
                ],
                [
                    48.43,
                    48.34,
                    48.25,
                    48.46
                ],
                [
                    48.45,
                    48.48,
                    48.34,
                    48.5
                ],
                [
                    48.5,
                    48.55,
                    48.4,
                    48.6
                ],
                [
                    48.5,
                    48.48,
                    48.29,
                    48.77
                ],
                [
                    48.18,
                    48.22,
                    48.06,
                    48.31
                ],
                [
                    48.02,
                    47.47,
                    47.46,
                    48.08
                ],
                [
                    47.41,
                    47.55,
                    47.37,
                    47.61
                ],
                [
                    47.85,
                    48.05,
                    47.85,
                    48.15
                ],
                [
                    48.1,
                    47.9,
                    47.88,
                    48.1
                ],
                [
                    48.04,
                    48.07,
                    48.01,
                    48.2
                ],
                [
                    47.94,
                    47.37,
                    47.35,
                    48.06
                ],
                [
                    47.24,
                    47.26,
                    47.1,
                    47.46
                ],
                [
                    47.18,
                    47.25,
                    47.08,
                    47.32
                ],
                [
                    47.36,
                    47.7,
                    47.36,
                    47.76
                ],
                [
                    47.51,
                    47.63,
                    47.51,
                    47.75
                ],
                [
                    47.78,
                    47.64,
                    47.62,
                    47.8
                ],
                [
                    47.82,
                    47.81,
                    47.72,
                    47.92
                ],
                [
                    47.9,
                    47.71,
                    47.6,
                    47.91
                ],
                [
                    47.47,
                    47.7,
                    47.46,
                    47.73
                ],
                [
                    47.65,
                    47.98,
                    47.61,
                    48.01
                ],
                [
                    48.15,
                    48.43,
                    48.13,
                    48.46
                ],
                [
                    48.54,
                    48.6,
                    48.5,
                    48.67
                ],
                [
                    48.56,
                    48.17,
                    47.95,
                    48.61
                ],
                [
                    48.29,
                    48.23,
                    48.16,
                    48.45
                ],
                [
                    48.31,
                    48.13,
                    48,
                    48.31
                ],
                [
                    48.04,
                    48.25,
                    47.98,
                    48.3
                ],
                [
                    48.56,
                    48.77,
                    48.56,
                    48.82
                ],
                [
                    48.89,
                    48.98,
                    48.83,
                    49.02
                ],
                [
                    48.98,
                    48.96,
                    48.91,
                    49
                ],
                [
                    48.9,
                    48.92,
                    48.81,
                    48.99
                ],
                [
                    48.92,
                    49.07,
                    48.86,
                    49.07
                ],
                [
                    49.19,
                    49.26,
                    49.15,
                    49.32
                ],
                [
                    49.29,
                    49.16,
                    49.16,
                    49.32
                ],
                [
                    49.26,
                    49.38,
                    49.19,
                    49.38
                ],
                [
                    49.36,
                    49.27,
                    49.24,
                    49.37
                ],
                [
                    49.23,
                    49.38,
                    49.22,
                    49.4
                ],
                [
                    49.35,
                    49.39,
                    49.18,
                    49.46
                ],
                [
                    49.44,
                    49.36,
                    49.36,
                    49.48
                ],
                [
                    49.59,
                    49.66,
                    49.33,
                    49.73
                ],
                [
                    49.6,
                    49.74,
                    49.49,
                    49.74
                ],
                [
                    49.76,
                    49.88,
                    49.73,
                    49.9
                ],
                [
                    49.88,
                    50.2,
                    49.86,
                    50.2
                ],
                [
                    50.27,
                    50.33,
                    50.14,
                    50.33
                ],
                [
                    50.29,
                    50.4,
                    50.21,
                    50.42
                ],
                [
                    50.49,
                    50.51,
                    50.41,
                    50.56
                ],
                [
                    50.37,
                    50.45,
                    50.33,
                    50.48
                ],
                [
                    50.5,
                    50.32,
                    50.27,
                    50.56
                ],
                [
                    50.48,
                    50.39,
                    50.32,
                    50.58
                ],
                [
                    50.41,
                    50.45,
                    50.34,
                    50.45
                ],
                [
                    50.36,
                    50.49,
                    50.32,
                    50.53
                ],
                [
                    50.58,
                    50.52,
                    50.45,
                    50.64
                ],
                [
                    50.57,
                    50.54,
                    50.49,
                    50.62
                ],
                [
                    50.54,
                    50.49,
                    50.41,
                    50.58
                ],
                [
                    50.58,
                    50.56,
                    50.47,
                    50.64
                ],
                [
                    50.37,
                    50.61,
                    50.2,
                    50.61
                ],
                [
                    50.82,
                    50.93,
                    50.77,
                    50.98
                ],
                [
                    51.04,
                    50.71,
                    50.68,
                    51.04
                ],
                [
                    50.8,
                    50.82,
                    50.74,
                    50.89
                ],
                [
                    50.76,
                    50.49,
                    50.16,
                    50.81
                ],
                [
                    50.59,
                    50.69,
                    50.47,
                    50.72
                ],
                [
                    50.66,
                    50.94,
                    50.54,
                    50.95
                ],
                [
                    50.82,
                    50.67,
                    50.58,
                    50.88
                ],
                [
                    50.77,
                    50.88,
                    50.71,
                    50.95
                ],
                [
                    51.1,
                    50.78,
                    50.71,
                    51.16
                ],
                [
                    50.78,
                    50.86,
                    50.71,
                    51
                ],
                [
                    50.82,
                    51,
                    50.76,
                    51.01
                ],
                [
                    51.05,
                    51.25,
                    51.05,
                    51.27
                ],
                [
                    51.25,
                    51,
                    50.88,
                    51.35
                ],
                [
                    50.96,
                    51.08,
                    50.85,
                    51.11
                ],
                [
                    50.79,
                    50.83,
                    50.54,
                    50.97
                ],
                [
                    50.81,
                    50.92,
                    50.77,
                    50.97
                ],
                [
                    50.78,
                    50.97,
                    50.71,
                    51.03
                ],
                [
                    50.82,
                    50.95,
                    50.82,
                    50.97
                ],
                [
                    50.72,
                    50.72,
                    50.41,
                    50.87
                ],
                [
                    50.88,
                    51.19,
                    50.88,
                    51.3
                ],
                [
                    51.15,
                    51.4,
                    51.15,
                    51.44
                ],
                [
                    51.47,
                    51.59,
                    51.4,
                    51.6
                ],
                [
                    51.75,
                    51.92,
                    51.73,
                    51.93
                ],
                [
                    51.98,
                    51.92,
                    51.9,
                    52.04
                ],
                [
                    52.06,
                    51.96,
                    51.94,
                    52.07
                ],
                [
                    52.01,
                    51.82,
                    51.82,
                    52.03
                ],
                [
                    51.93,
                    52.36,
                    51.89,
                    52.39
                ],
                [
                    52.43,
                    52.5,
                    52.34,
                    52.68
                ],
                [
                    52.68,
                    52.83,
                    52.66,
                    53.06
                ],
                [
                    52.87,
                    52.71,
                    51.75,
                    52.87
                ],
                [
                    53.14,
                    52.6,
                    52.6,
                    53.28
                ],
                [
                    52.69,
                    52.27,
                    52.26,
                    52.69
                ],
                [
                    52.18,
                    52.06,
                    52.02,
                    52.27
                ],
                [
                    52.04,
                    52.43,
                    52.04,
                    52.53
                ],
                [
                    52.66,
                    52.73,
                    52.53,
                    52.78
                ],
                [
                    52.82,
                    52.74,
                    52.67,
                    52.85
                ],
                [
                    52.81,
                    52.64,
                    52.63,
                    52.81
                ],
                [
                    52.64,
                    52.53,
                    52.53,
                    52.8
                ],
                [
                    52.59,
                    52.21,
                    52.18,
                    52.64
                ],
                [
                    52.78,
                    52.65,
                    52.41,
                    52.86
                ],
                [
                    53.1,
                    53.14,
                    52.99,
                    53.21
                ],
                [
                    52.97,
                    52.97,
                    52.92,
                    53.27
                ],
                [
                    53.02,
                    53.03,
                    52.89,
                    53.2
                ],
                [
                    53.22,
                    53.16,
                    53.06,
                    53.23
                ],
                [
                    53.08,
                    53.22,
                    53,
                    53.22
                ],
                [
                    53.18,
                    53.29,
                    53.18,
                    53.33
                ],
                [
                    53.31,
                    53.33,
                    53.27,
                    53.45
                ],
                [
                    53.41,
                    53.54,
                    53.25,
                    53.55
                ],
                [
                    53.73,
                    53.27,
                    53.25,
                    53.73
                ],
                [
                    53.45,
                    53.68,
                    53.31,
                    53.68
                ],
                [
                    53.73,
                    53.89,
                    53.73,
                    53.92
                ],
                [
                    54.1,
                    54,
                    53.95,
                    54.15
                ],
                [
                    54.18,
                    54.23,
                    54.04,
                    54.24
                ],
                [
                    54.23,
                    54.42,
                    54.09,
                    54.45
                ],
                [
                    54.53,
                    54.38,
                    54.32,
                    54.57
                ],
                [
                    54.23,
                    54.19,
                    53.98,
                    54.28
                ],
                [
                    54.28,
                    54.81,
                    54.26,
                    54.81
                ],
                [
                    54.85,
                    54.99,
                    54.77,
                    55.01
                ],
                [
                    55.21,
                    54.47,
                    54.38,
                    55.22
                ],
                [
                    54.72,
                    54.9,
                    54.6,
                    55.01
                ],
                [
                    54.85,
                    54.83,
                    54.74,
                    54.99
                ],
                [
                    54.97,
                    55.35,
                    54.93,
                    55.35
                ],
                [
                    55.41,
                    55.77,
                    55.38,
                    55.77
                ],
                [
                    55.8,
                    55.99,
                    55.68,
                    56.01
                ],
                [
                    56.12,
                    55.89,
                    55.66,
                    56.22
                ],
                [
                    56.12,
                    55.87,
                    55.68,
                    56.18
                ],
                [
                    55.99,
                    56.22,
                    55.77,
                    56.22
                ]
            ],
            "type": "candlestick"
        },
        {
            "name": "Pattern",
            "type": "custom",
            "dimensions": [],
            "data": [
                {
                    "tag": "Bullish",
                    "name": "Ascending Triangle",
                    "rl": {
                        "name": "Resistance",
                        "value": [
                            71,
                            53.3,
                            115.22165734621258,
                            53.26
                        ],
                        "itemStyle": {
                            "normal": {
                                "color": "#da9be8",
                                "borderWidth": 2,
                                "borderType": "dotted",
                                "borderColor": "#da9be8"
                            }
                        }
                    },
                    "sl": {
                        "name": "Support",
                        "value": [
                            71,
                            49.35,
                            115.22165734621258,
                            53.26
                        ],
                        "itemStyle": {
                            "normal": {
                                "color": "#da9be8",
                                "borderWidth": 2,
                                "borderType": "dotted",
                                "borderColor": "#da9be8"
                            }
                        }
                    },
                    "patternHeight": "N/A",
                    "value": [
                        77,
                        51.35,
                        83,
                        50.41,
                        95,
                        53.28,
                        103,
                        52.18,
                        106,
                        53.27,
                        122,
                        54.99
                    ]
                },
                {
                    "tag": "Bullish",
                    "name": "V Bottom",
                    "rl": {
                        "name": "Resistance",
                        "value": [],
                        "itemStyle": {
                            "normal": {
                                "color": "#da9be8",
                                "borderWidth": 2,
                                "borderType": "dotted",
                                "borderColor": "#da9be8"
                            }
                        }
                    },
                    "sl": {
                        "name": "Support",
                        "value": [],
                        "itemStyle": {
                            "normal": {
                                "color": "#da9be8",
                                "borderWidth": 2,
                                "borderType": "dotted",
                                "borderColor": "#da9be8"
                            }
                        }
                    },
                    "patternHeight": 0.0261,
                    "value": [
                        14,
                        48.31,
                        22,
                        47.08,
                        23,
                        47.7
                    ]
                },
                {
                    "tag": "Bullish",
                    "name": "V Bottom",
                    "rl": {
                        "name": "Resistance",
                        "value": [],
                        "itemStyle": {
                            "normal": {
                                "color": "#da9be8",
                                "borderWidth": 2,
                                "borderType": "dotted",
                                "borderColor": "#da9be8"
                            }
                        }
                    },
                    "sl": {
                        "name": "Support",
                        "value": [],
                        "itemStyle": {
                            "normal": {
                                "color": "#da9be8",
                                "borderWidth": 2,
                                "borderType": "dotted",
                                "borderColor": "#da9be8"
                            }
                        }
                    },
                    "patternHeight": 0.0296,
                    "value": [
                        13,
                        48.77,
                        16,
                        47.37,
                        17,
                        48.05
                    ]
                }
            ],
            renderItem: function({dataIndex}, api) {
                console.log(dataIndex);
                
                const style = api.style(LINE_STYLE);
                const {rl, sl, value} = option.series[1].data[dataIndex];
                const children = [];
                const group = {type: 'group', children};
        
                const points = [];
        
                for (let i = 0, len = value.length; i < len; i += 2) {
                    points.push(api.coord([value[i], value[i + 1]]));
                }
        
                children.push({
                    type: 'polyline',
                    shape: {
                        points
                    },
                    style,
                    styleEmphasis: api.styleEmphasis(EMPPHASIS_STYLE)
                });
        
                rl.value.length && children.push(buildLine(rl, api));
                sl.value.length && children.push(buildLine(sl, api));
                
                console.log(dataIndex);
    
                return group;
            }
        }
    ],
    "legend": {
        "show": false
    },
    "grid": [
        {
            "height": 425,
            "left": 0,
            "right": 50,
            "top": -1,
            "containLabel": false,
            "show": false,
            "borderColor": "#555"
        }
    ],
    "xAxis": [
        {
            "type": "category",
            "boundaryGap": true,
            "max": "dataMax",
            "axisLabel": {
                "show": false
            },
            "axisLine": {
                "show": false
            },
            "axisTick": {
                "show": false
            },
            "axisPointer": {
                "label": {
                    "show": false
                }
            },
            "splitLine": {
                "show": true,
                "lineStyle": {
                    "color": "#e6e6e6"
                }
            },
            "data": [
                "2017-07-20",
                "2017-07-21",
                "2017-07-24",
                "2017-07-25",
                "2017-07-26",
                "2017-07-27",
                "2017-07-28",
                "2017-07-31",
                "2017-08-01",
                "2017-08-02",
                "2017-08-03",
                "2017-08-04",
                "2017-08-07",
                "2017-08-08",
                "2017-08-09",
                "2017-08-10",
                "2017-08-11",
                "2017-08-14",
                "2017-08-15",
                "2017-08-16",
                "2017-08-17",
                "2017-08-18",
                "2017-08-21",
                "2017-08-22",
                "2017-08-23",
                "2017-08-24",
                "2017-08-25",
                "2017-08-28",
                "2017-08-29",
                "2017-08-30",
                "2017-08-31",
                "2017-09-01",
                "2017-09-05",
                "2017-09-06",
                "2017-09-07",
                "2017-09-08",
                "2017-09-11",
                "2017-09-12",
                "2017-09-13",
                "2017-09-14",
                "2017-09-15",
                "2017-09-18",
                "2017-09-19",
                "2017-09-20",
                "2017-09-21",
                "2017-09-22",
                "2017-09-25",
                "2017-09-26",
                "2017-09-27",
                "2017-09-28",
                "2017-09-29",
                "2017-10-02",
                "2017-10-03",
                "2017-10-04",
                "2017-10-05",
                "2017-10-06",
                "2017-10-09",
                "2017-10-10",
                "2017-10-11",
                "2017-10-12",
                "2017-10-13",
                "2017-10-16",
                "2017-10-17",
                "2017-10-18",
                "2017-10-19",
                "2017-10-20",
                "2017-10-23",
                "2017-10-24",
                "2017-10-25",
                "2017-10-26",
                "2017-10-27",
                "2017-10-30",
                "2017-10-31",
                "2017-11-01",
                "2017-11-02",
                "2017-11-03",
                "2017-11-06",
                "2017-11-07",
                "2017-11-08",
                "2017-11-09",
                "2017-11-10",
                "2017-11-13",
                "2017-11-14",
                "2017-11-15",
                "2017-11-16",
                "2017-11-17",
                "2017-11-20",
                "2017-11-21",
                "2017-11-22",
                "2017-11-24",
                "2017-11-27",
                "2017-11-28",
                "2017-11-29",
                "2017-11-30",
                "2017-12-01",
                "2017-12-04",
                "2017-12-05",
                "2017-12-06",
                "2017-12-07",
                "2017-12-08",
                "2017-12-11",
                "2017-12-12",
                "2017-12-13",
                "2017-12-14",
                "2017-12-15",
                "2017-12-18",
                "2017-12-19",
                "2017-12-20",
                "2017-12-21",
                "2017-12-22",
                "2017-12-26",
                "2017-12-27",
                "2017-12-28",
                "2017-12-29",
                "2018-01-02",
                "2018-01-03",
                "2018-01-04",
                "2018-01-05",
                "2018-01-08",
                "2018-01-09",
                "2018-01-10",
                "2018-01-11",
                "2018-01-12",
                "2018-01-16",
                "2018-01-17",
                "2018-01-18",
                "2018-01-19",
                "2018-01-22",
                "2018-01-23",
                "2018-01-24",
                "2018-01-25",
                "2018-01-26"
            ]
        }
    ],
    "yAxis": [
        {
            "scale": true,
            "boundaryGap": [
                "5%",
                "5%"
            ],
            "splitArea": {
                "show": false
            },
            "axisLabel": {
                "textStyle": {
                    "color": "#555",
                    "baseline": "top"
                }
            },
            "axisLine": {
                "lineStyle": {
                    "color": "#555"
                }
            },
            "splitLine": {
                "lineStyle": {
                    "color": "#e6e6e6"
                }
            },
            "axisPointer": {
                "label": {
                    "backgroundColor": "#0094ff"
                }
            },
            "position": "right"
        }
    ]
};