test/pie-negative-value.html

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<html>
    <head>
        <meta charset="utf-8" />
        <script src="lib/simpleRequire.js"></script>
        <script src="lib/config.js"></script>
        <meta name="viewport" content="width=device-width, initial-scale=1" />
    </head>
    <body>
        <style>
            h1 {
                line-height: 60px;
                height: 60px;
                background: #146402;
                text-align: center;
                font-weight: bold;
                color: #eee;
                font-size: 14px;
            }
            .chart {
                height: 600px;
            }
        </style>

        <div id="chart-with-single-negative" class="chart"></div>
        <div id="chart-with-full-negative" class="chart"></div>
        <div id="chart-with-empty-circle-config" class="chart"></div>
        <script>
            require(["echarts"], function (echarts) {
                var chartWithSingleNegative = echarts.init(
                    document.getElementById("chart-with-single-negative")
                );
                chartWithSingleNegative.setOption({
                    aria: {
                        enabled: true,
                    },
                    title: {
                        text: `The minus value slice should be filtered`,
                        x: "center",
                    },
                    tooltip: {
                        trigger: "item",
                        formatter: "{a} <br/>{b} : {c} ({d}%)",
                    },
                    legend: {
                        orient: "vertical",
                        left: "left",
                        data: [
                            "直接访问",
                            "邮件营销",
                            "联盟广告",
                            "视频广告(value is 0)",
                            "搜索引擎(value is minus)",
                        ],
                    },
                    series: [
                        {
                            name: "访问来源",
                            type: "pie",
                            radius: "55%",
                            center: ["50%", "60%"],
                            selectedMode: "single",
                            data: [
                                { value: 335, name: "直接访问" },
                                { value: 310, name: "邮件营销" },
                                { value: 234, name: "联盟广告" },
                                { value: 0, name: "视频广告(value is 0)" },
                                {
                                    value: -1548,
                                    name: "搜索引擎(value is minus)",
                                },
                            ],
                            emphasis: {
                                itemStyle: {
                                    shadowBlur: 10,
                                    shadowOffsetX: 0,
                                    shadowColor: "rgba(0, 0, 0, 0.5)",
                                },
                            },
                        },
                    ],
                });

                var chartWithFullNegative = echarts.init(
                    document.getElementById("chart-with-full-negative")
                );
                chartWithFullNegative.setOption({
                    aria: {
                        enabled: true,
                    },
                    title: {
                        text: `The pie chart should be empty when all values are negative`,
                        x: "center",
                    },
                    tooltip: {
                        trigger: "item",
                        formatter: "{a} <br/>{b} : {c} ({d}%)",
                    },
                    legend: {
                        orient: "vertical",
                        left: "left",
                        data: ["直接访问", "邮件营销", "联盟广告"],
                    },
                    series: [
                        {
                            name: "访问来源",
                            type: "pie",
                            radius: "55%",
                            center: ["50%", "60%"],
                            selectedMode: "single",
                            data: [
                                { value: -335, name: "直接访问" },
                                { value: -310, name: "邮件营销" },
                                { value: -234, name: "联盟广告" },
                            ],
                            emphasis: {
                                itemStyle: {
                                    shadowBlur: 10,
                                    shadowOffsetX: 0,
                                    shadowColor: "rgba(0, 0, 0, 0.5)",
                                },
                            },
                        },
                    ],
                });

                var chartWithEmptyCircleConfig = echarts.init(
                    document.getElementById("chart-with-empty-circle-config")
                );
                chartWithEmptyCircleConfig.setOption({
                    aria: {
                        enabled: true,
                    },
                    title: {
                        text: `The empty circle can be configured, see: showEmptyCircle、emptyCircleStyle`,
                        x: "center",
                    },
                    tooltip: {
                        trigger: "item",
                        formatter: "{a} <br/>{b} : {c} ({d}%)",
                    },
                    legend: {
                        orient: "vertical",
                        left: "left",
                        data: ["直接访问", "邮件营销", "联盟广告"],
                    },
                    series: [
                        {
                            name: "访问来源",
                            type: "pie",
                            radius: "55%",
                            center: ["50%", "60%"],
                            selectedMode: "single",
                            data: [
                                { value: -335, name: "直接访问" },
                                { value: -310, name: "邮件营销" },
                                { value: -234, name: "联盟广告" },
                            ],
                            emphasis: {
                                itemStyle: {
                                    shadowBlur: 10,
                                    shadowOffsetX: 0,
                                    shadowColor: "rgba(0, 0, 0, 0.5)",
                                },
                            },
                            showEmptyCircle: true,
                            emptyCircleStyle: {
                                color: 'red',
                                opacity: 0.3
                            }
                        },
                    ],
                });

                window.onresize = () => {
                    chartWithSingleNegative.resize();
                    chartWithFullNegative.resize();
                    chartWithEmptyCircleConfig.resize();
                };
            });
        </script>
    </body>
</html>