y坐标轴去掉动画echarts 折线配置项内容和展示

请问在切换数据的时候 y坐标轴怎么去掉动画?线是可以去掉的动画的

配置项如下
      <!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>ECharts</title>
    <!-- 引入 echarts.js -->
    <script src="./echarts.min.js"></script>
</head>
<body>
    <!-- 为ECharts准备一个具备大小(宽高)的Dom -->
    <div id="main" style="width: 700px;height:400px;"></div>
    <div id="qiehuan" onClick="qiehuan()">切换</div>
    <script type="text/javascript">
	var myChart = echarts.init(document.getElementById('main'));

		option = {
		    title: {
		        text: '折线图堆叠'
		    },
		    tooltip: {
		        trigger: 'axis'
		    },
		    legend: {
		        data:['邮件营销','联盟广告','视频广告','直接访问','搜索引擎']
		    },
		    grid: {
		        left: '3%',
		        right: '4%',
		        bottom: '3%',
		        containLabel: true
		    },
		    toolbox: {
		        feature: {
		            saveAsImage: {}
		        }
		    },
		    xAxis: {
		        type: 'category',
		        boundaryGap: false,
		        data: ['周一','周二','周三','周四','周五','周六','周日']
		    },
		    yAxis: {
		        type: 'value'
		    },
		    series: [
		        {
		            name:'邮件营销',
		            type:'line',
		            stack: '总量',
		            data:[120, 132, 101, 134, 90, 230, 210]
		        },
		        {
		            name:'联盟广告',
		            type:'line',
		            stack: '总量',
		            data:[220, 182, 191, 234, 290, 330, 310]
		        },
		        {
		            name:'视频广告',
		            type:'line',
		            stack: '总量',
		            data:[150, 232, 201, 154, 190, 330, 410]
		        },
		        {
		            name:'直接访问',
		            type:'line',
		            stack: '总量',
		            data:[320, 332, 301, 334, 390, 330, 320]
		        },
		        {
		            name:'搜索引擎',
		            type:'line',
		            stack: '总量',
		            data:[820, 932, 901, 934, 1290, 1330, 1320]
		        }
		    ]
		}

		var qiehuan_option = {
		    title: {
		        text: '折线图堆叠'
		    },
		    tooltip: {
		        trigger: 'axis'
		    },
		    legend: {
		        data:['邮件营销','联盟广告','视频广告','直接访问','搜索引擎']
		    },
		    grid: {
		        left: '3%',
		        right: '4%',
		        bottom: '3%',
		        containLabel: true
		    },
		    toolbox: {
		        feature: {
		            saveAsImage: {}
		        }
		    },
		    xAxis: {
		        type: 'category',
		        boundaryGap: false,
		        data: ['周一','周二','周三','周四','周五','周六','周日']
		    },
		    yAxis: {
		        type: 'value'
		    },
		    series: [
		        {
		            name:'邮件营销',
		            type:'line',
		            stack: '总量',
		            data:[1200, 1320, 1011, 1341, 901, 2301, 2101],
		            animation : false
		        },
		        {
		            name:'联盟广告',
		            type:'line',
		            stack: '总量',
		            data:[2201, 1821, 1911, 2341, 2901, 3301, 3101],
		            animation : false
		        },
		        {
		            name:'视频广告',
		            type:'line',
		            stack: '总量',
		            data:[1501, 2321, 2011, 1541, 1901, 3301, 4101],
		            animation : false
		        },
		        {
		            name:'直接访问',
		            type:'line',
		            stack: '总量',
		            data:[3201, 3312, 3011, 3314, 1390, 1330, 1320],
		            animation : false
		        },
		        {
		            name:'搜索引擎',
		            type:'line',
		            stack: '总量',
		            data:[820, 932, 901, 934, 1290, 1330, 1320],
		            animation : false
		        }
		    ]
		}	

        // 使用刚指定的配置项和数据显示图表。
        myChart.setOption(option);


        function qiehuan(){
        	myChart.setOption(qiehuan_option);
        }
    </script>
</body>
</html>
    
截图如下