可缩放图表echarts 柱状配置项内容和展示

Feature Sample: Gradient Color, Shadow, Click Zoom

      var dataAxis = [1,20,18,19,8,3,5,4,12,15,14,11,6,9,17,13,2,10,7,8];
var data = [3.8306,
 3.8909,
 3.6735,
 3.7857,
 3.75,
 3.6286,
 3.625,
 3.8148,
 3.85,
 3.5238,
 3.7,
 3.45,
 3.8889,
 3.8333,
 4.0588,
 3.3684,
 3.5,
 3.1875,
 4.0769,
 4.0];
var yMax = 5;
var dataShadow = [];

for (var i = 0; i < data.length; i++) {
    dataShadow.push(yMax);
}

option = {
    title: {
        text: '各个车站该日上客人数刷客及投币比例',
    },
    toolbox: {
        show: true,
    　　feature: {
　　　　    saveAsImage: {
　　　　        show:true,
                excludeComponents :['toolbox'],
                pixelRatio: 2
　　　　    }
　　    }
    },
    xAxis: {
        data: dataAxis,
        axisLabel: {
            inside: true,
            textStyle: {
                color: '#fff'
            }
        },
        axisTick: {
            show: false
        },
        axisLine: {
            show: false
        },
        z: 10
    },
    yAxis: {
        axisLine: {
            show: false
        },
        axisTick: {
            show: false
        },
        axisLabel: {
            textStyle: {
                color: '#999'
            }
        }
    },
    dataZoom: [
        {
            type: 'inside'
        }
    ],
    series: [
        { // For shadow
            type: 'bar',
            itemStyle: {
                normal: {color: 'rgba(0,0,0,0.05)'}
            },
            barGap:'-100%',
            barCategoryGap:'40%',
            data: dataShadow,
            animation: false
        },
        {
            type: 'bar',
            itemStyle: {
                normal: {
                    color: new echarts.graphic.LinearGradient(
                        0, 0, 0, 1,
                        [
                            {offset: 0, color: '#83bff6'},
                            {offset: 0.5, color: '#188df0'},
                            {offset: 1, color: '#188df0'}
                        ]
                    )
                },
                emphasis: {
                    color: new echarts.graphic.LinearGradient(
                        0, 0, 0, 1,
                        [
                            {offset: 0, color: '#2378f7'},
                            {offset: 0.7, color: '#2378f7'},
                            {offset: 1, color: '#83bff6'}
                        ]
                    )
                }
            },
            data: data
        }
    ]
};

// Enable data zoom when user click bar.
var zoomSize = 6;
myChart.on('click', function (params) {
    console.log(dataAxis[Math.max(params.dataIndex - zoomSize / 2, 0)]);
    myChart.dispatchAction({
        type: 'dataZoom',
        startValue: dataAxis[Math.max(params.dataIndex - zoomSize / 2, 0)],
        endValue: dataAxis[Math.min(params.dataIndex + zoomSize / 2, data.length - 1)]
    });
});