c3.js - 从 C3.js 条形图中排除零值

Question

让我们以下面的图表 http://c3js.org/samples/chart_bar.html 为例
但是用下面的数据替换列数据:

var chart = c3.generate({
    data: {
        columns: [
            ['data1', 30, 0, 100, 0, 150, 250],
            ['data2', 130, 0, 140, 200, 0, 50]
        ],
        type: 'bar'
    },
    bar: {
        width: {
            ratio: 0.5 // this makes bar width 50% of length between ticks
        }
        // or
        //width: 100 // this makes bar width 100px
    }
});

setTimeout(function () {
    chart.load({
        columns: [
            ['data3', 130, -150, 200, 300, -200, 100]
        ]
    });
}, 1000);

正如我们所看到的，我们有很多空白或零值条，我们如何删除它并删除空白。 (不是隐藏，我知道如何用 CSS 隐藏它)

Image example, what should be removed

Answer 1

正如在 https://github.com/c3js/c3/issues/81 中搜索的那样
您需要将 0 替换为 'null' 并添加以下内容:

    line: {
     connectNull: true,
    },

var chart = c3.generate({
    data: {
        columns: [
            ['data1', 30, null, 100, null, 150, 250],
            ['data2', 130, null, 140, 200, null, 50]
        ],
        line: {
         connectNull: true,
        },
        type: 'bar'
    },
    bar: {
        width: {
            ratio: 0.5 // this makes bar width 50% of length between ticks
        }
        // or
        //width: 100 // this makes bar width 100px
    }
});

setTimeout(function () {
    chart.load({
        columns: [
            ['data3', 130, -150, 200, 300, -200, 100]
        ]
    });
}, 1000);