[GitHub] [incubator-echarts] mexvod opened issue #9141: Negative line calculate stack

Thu, 27 Sep 2018 03:09:52 -0700 

option = {

    grid: {
        left: '3%',
        right: '4%',
        bottom: '3%',
        containLabel: true
    },
    xAxis : [
        {
            type : 'category',
            boundaryGap : false,
            data : [1,2,3,4,5]
        }
    ],
    yAxis : [
        {
            type : 'value'
        }
    ],
    series : [
        {
            type:'line',
            stack: '1',
            data:[110,120, 120, 101,115]
        },
        {
            type:'line',
            stack: '1',
            label: {
                normal: {
                    show: true,
                    position: 'top'
                }
            },
            areaStyle: {normal: {}},
            data:[134,200, -20, 181,143]
        }
    ]
};

![default](https://user-images.githubusercontent.com/10468397/46138836-a5889300-c255-11e8-9809-d40d3c8c196c.png)
Negative areaStyle badly !!
Next:
option = {

    grid: {
        left: '3%',
        right: '4%',
        bottom: '3%',
        containLabel: true
    },
    xAxis : [
        {
            type : 'category',
            boundaryGap : false,
            data : [1,2,3,4,5]
        }
    ],
    yAxis : [
        {
            type : 'value'
        }
    ],
    series : [
        {
            type:'line',
           
            data:[110,120, 120, 101,115]
        },
        {
            type:'line',
           
            label: {
                normal: {
                    show: true,
                    position: 'top'
                }
            },
            data:[134,200, 80, 181,143]
        }
    ]
};
![default](https://user-images.githubusercontent.com/10468397/46139045-35c6d800-c256-11e8-8755-7cc86c82cddf.png)
How to make:
![default](https://user-images.githubusercontent.com/10468397/46139171-7de5fa80-c256-11e8-8924-17c3f449be9b.png)
how to paint over these areas?

[ Full content available at: 
https://github.com/apache/incubator-echarts/issues/9141 ]
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